CN109542154B

CN109542154B - Control method and electronic equipment

Info

Publication number: CN109542154B
Application number: CN201811605106.9A
Authority: CN
Inventors: 范长明
Original assignee: Lenovo Beijing Ltd
Current assignee: Lenovo Beijing Ltd
Priority date: 2018-12-26
Filing date: 2018-12-26
Publication date: 2021-03-19
Anticipated expiration: 2038-12-26
Also published as: CN109542154A

Abstract

The disclosure discloses a control method, a control device and electronic equipment, wherein the method comprises the following steps: acquiring voltage output information of the power supply, wherein the voltage output information indicates that the power supply outputs voltage according to a first change mode in a first time period; in response to the first change mode meeting the first control condition, controlling the power supply to output voltage according to a second change mode; in the first change mode, first noise generated by the electronic equipment powered by the power supply is greater than or equal to second noise generated by the electronic equipment powered by the power supply in the second change mode; in an electronic device powered by a power supply, there is a noise generated by the first component being excited by a voltage change of the power supply. According to the method and the device, the change mode of the power supply when outputting the voltage signal is changed to reduce the noise generated by the electronic equipment, so that the influence of the noise generated on the first component on a user is improved, and the use experience of the user on the electronic equipment is obviously improved after the noise is reduced.

Description

Control method and electronic equipment

Technical Field

The present disclosure relates to the field of terminal technologies, and in particular, to a control method and an electronic device.

Background

At present, during the use period of equipment such as a notebook computer, the piezoelectric effect is caused by ceramic capacitance due to the constantly changing voltage output of a CPU, so that the resonance phenomenon is caused, obvious noise is generated, and the use experience of a user is influenced.

Therefore, a scheme capable of controlling the noise of the device is needed.

Disclosure of Invention

In view of this, the present disclosure provides a control method, including:

acquiring voltage output information of a power supply, wherein the voltage output information indicates that the power supply outputs voltage according to a first change mode within a first time period;

in response to that the first change mode meets a first control condition, controlling the power supply to output voltage according to a second change mode;

in the first change mode, the electronic equipment powered by the power supply generates first noise, and in the second change mode, the electronic equipment powered by the power supply generates second noise;

the first noise is greater than or equal to a second noise;

wherein, in the electronic device which uses the power supply for power supply, a first component exists, and the first component is excited by the voltage change of the power supply to generate the noise.

In the method, it is preferable that the electronic device further includes a second component, and the power supply provides information that the voltage is output in the first variation mode in the first period of time.

In the above method, preferably, the first variation pattern meets a first control condition, and includes:

the pressure drop parameter in the first variation mode conforms to a control condition corresponding to the pressure drop parameter;

wherein, control the power and carry out voltage output according to the second mode of change, include:

and after the control power supply delays for a first time, the voltage of the output voltage signal is reduced.

In the above method, preferably, the pressure drop parameter meets a control condition corresponding to the pressure drop parameter, and the method includes:

and the magnitude relation between the target voltage value in the voltage drop parameter and the current voltage value of the power supply and the first reference value corresponding to the current voltage value meets the control condition.

In the above method, preferably, a magnitude relationship between a target voltage value in the voltage drop parameter and a current voltage value of the power supply and a first reference value corresponding to the current voltage value satisfies a control condition, and the method includes:

the first reference value is between the current voltage value and the target voltage value.

and the magnitude relation between the voltage difference between the target voltage value in the voltage drop parameter and the current voltage value of the power supply and the target voltage difference corresponding to the current voltage value meets the control condition.

In the above method, preferably, a magnitude relationship between a voltage difference between a target voltage value in the voltage drop parameter and a current voltage value of the power supply and a target voltage difference corresponding to the current voltage value satisfies a control condition, and the method includes:

and the voltage difference between the target voltage value and the current voltage value is greater than the target voltage difference corresponding to the current voltage value.

Preferably, the method of controlling the power supply to perform voltage reduction processing on the output voltage signal after delaying for the first time period includes:

and in the voltage reduction period indicated in the voltage request instruction, after delaying for a first time length, carrying out voltage reduction processing on an output voltage signal of the power supply.

The present disclosure also provides a control device, including:

the detector is used for acquiring voltage output information of the power supply, wherein the voltage output information indicates that the power supply outputs voltage according to a first change mode in a first time period;

the controller is used for responding to that the first change mode accords with a first control condition and controlling the power supply to output voltage according to a second change mode;

the first noise is greater than or equal to a second noise;

The present disclosure also provides an electronic device, including:

a power source;

a first component which is excited by the voltage change of the power supply to generate noise;

a processor for executing an application to implement the following functions: acquiring voltage output information of the power supply, wherein the voltage output information indicates that the power supply outputs voltage according to a first change mode in a first time period, and controlling the power supply to output voltage according to a second change mode in response to the first change mode meeting a first control condition;

wherein in the first variation mode, the electronic device generates a first noise, and in the second variation mode, the electronic device generates a second noise;

the first noise is greater than or equal to a second noise.

According to the technical scheme, when the power supply is used for supplying power to the electronic equipment comprising the first component which is excited by the voltage signal to generate noise, whether a first change mode of the power supply for outputting the voltage in a first time period meets a first control condition is monitored by monitoring the voltage output information of the power supply, and when the first control condition is met, the power supply is controlled not to output the voltage according to the first change mode, but to output the voltage according to the second change mode, so that the noise generated by the electronic equipment which supplies power by using the power supply is reduced by controlling the change mode of outputting the voltage, the influence of the noise generated on the first component on a user is improved, and the use experience of the user on the electronic equipment is obviously improved after noise reduction is realized.

Drawings

In order to more clearly illustrate the embodiments of the present disclosure or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present disclosure, and other drawings can be obtained by those skilled in the art without creative efforts.

Fig. 1 is a flowchart of a control method according to an embodiment of the disclosure;

FIGS. 2-5 are diagrams of examples of applications of embodiments of the present disclosure, respectively;

fig. 6 is another flowchart of a control method according to an embodiment of the disclosure;

fig. 7 is a schematic structural diagram of a noise control apparatus according to a second embodiment of the disclosure;

fig. 8 is a schematic structural diagram of an electronic device according to a third embodiment of the present disclosure;

FIGS. 9-14 are diagrams of further examples of applications, respectively, in embodiments of the present disclosure;

fig. 15 is a flowchart of a control method according to a fourth embodiment of the disclosure;

FIG. 16 is a diagram illustrating an example of an application of an embodiment of the present disclosure;

fig. 17 is a schematic structural diagram of a control device according to a fifth embodiment of the present disclosure;

fig. 18 is a schematic structural diagram of an electronic device according to a sixth embodiment of the present disclosure;

FIGS. 19 and 20 are diagrams of other exemplary applications of the embodiments of the disclosure;

fig. 21 is a flowchart of a control method provided in a seventh embodiment of the present disclosure;

fig. 22, 23 and 24 are diagrams illustrating examples of applications of the embodiment of the present disclosure;

fig. 25 is another flowchart of a control method provided in the seventh embodiment of the present disclosure;

FIG. 26 is a diagram of another example of an application of an embodiment of the present disclosure;

fig. 27 is another flowchart of a control method provided in the seventh embodiment of the present disclosure;

fig. 28 is a schematic structural diagram of a control device according to an eighth embodiment of the present disclosure;

fig. 29 is a schematic structural diagram of an electronic device provided in the ninth embodiment of the present disclosure;

FIGS. 30, 31 and 32 are diagrams of other exemplary applications of the embodiments of the disclosure;

fig. 33 is a flowchart of a control method provided in the tenth embodiment of the present disclosure;

FIGS. 34-38 are diagrams of an example of an application of an embodiment of the present disclosure, respectively;

fig. 39 is a schematic structural diagram of a control device according to an eleventh embodiment of the present disclosure;

fig. 40 to 42 are schematic structural diagrams of an electronic device according to a twelfth embodiment of the disclosure, respectively;

fig. 43-45 are diagrams of other examples of applications of the embodiments of the present disclosure, respectively.

Fig. 46 is a flowchart of a control method according to a thirteenth embodiment of the disclosure;

FIGS. 47 and 48 are exemplary illustrations of applications of embodiments of the present disclosure;

FIG. 49 is another flow chart of a thirteenth embodiment of the present disclosure;

fig. 50 is a schematic structural diagram of a control device according to a fourteenth embodiment of the disclosure;

fig. 51 is a schematic diagram of a power supply according to a fifteenth embodiment of the disclosure;

fig. 52 is a schematic structural diagram of an electronic device according to a sixteenth embodiment of the present disclosure;

fig. 53 is a schematic structural diagram of an electronic device according to a seventeenth embodiment of the present disclosure;

fig. 54, 55 and 56 are other exemplary diagrams of the embodiments of the disclosure, respectively.

Detailed Description

The technical solutions in the embodiments of the present disclosure will be clearly and completely described below with reference to the drawings in the embodiments of the present disclosure, and it is obvious that the described embodiments are only a part of the embodiments of the present disclosure, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments disclosed herein without making any creative effort, shall fall within the protection scope of the present disclosure.

In order to achieve noise reduction, the present disclosure may be implemented by:

firstly, voltage output information of a power supply is obtained, wherein the voltage output information indicates that the power supply is to output voltage according to a first change mode in a first time period in the future so as to supply power to electronic equipment, such as mobile phone pads or notebooks and other equipment;

then, whether the first variation mode meets a first control condition is determined, the first control condition indicates that the state of the power supply performing voltage output in the first future time period in the first variation mode meets a preset condition, for example, the switching frequency of the power supply performing voltage output in the first future time period meets the first control condition, the variation information of the voltage (the voltage required by the second component) of the power supply performing voltage output in the first future time period meets the first control condition, the voltage drop parameter of the power supply performing voltage output in the first future time period has a first drop moment in the waveform cycle of the voltage signal when the power supply performs voltage output in the first future time period, the variation amplitude and/or the variation frequency of the voltage of the power supply performing voltage output in the first future time period meets the corresponding control condition, and so on.

If the first variation pattern meets the first control condition, the power supply is controlled to perform voltage output according to the second variation pattern in a first period of time in the future, for example, the switching frequency when the power supply performs voltage output is changed dynamically, and the like.

In the first variation mode, the electronic device powered by the power supply generates a first noise, and in the second variation mode, the electronic device powered by the power supply generates a second noise, and the first noise is greater than or equal to the second noise.

Specifically, in an electronic device that uses a power supply for power supply, there is a first component, such as a ceramic capacitor, which is excited by a voltage change of the power supply to generate noise, that is, the noise generated by the first component is reduced by controlling a voltage change pattern when the power supply supplies power to the electronic device in the present disclosure, thereby achieving effective noise reduction.

In addition, the electronic device further includes a second component, such as a central Processing unit (cpu) (central Processing unit) component, for sending a voltage request command, such as an svid (system V Interface description) command, to the power supply, so as to provide voltage output information to the power supply, that is, information that the power supply outputs a voltage according to the first variation pattern in the first time period.

It should be noted that the noise referred to in the present disclosure refers to a sound which is disordered and discordant in pitch and tone variation, and is specifically generated by irregular vibration of the sounding body (different from musical tone), that is, the noise is a sound generated when the sounding body does irregular vibration; or, the noise refers to sound which should not be present in a certain environment, and can be understood as noisy and harsh sound, such as sound which prevents people from normally resting, studying and working, and sound which interferes with sound to be heard by people, and belongs to noise. The noise reduction in the present disclosure means reducing the sound intensity, sound power, and the like of the noise, so that the electronic device after noise reduction does not affect the use of the user.

The following examples illustrate implementations in the present disclosure:

referring to fig. 1, an implementation flowchart of a control method provided in an embodiment of the present disclosure is shown, where the method in this embodiment is applicable to an electronic device with a power supply, such as a mobile phone, a pad, or a notebook, where the power supply is instructed by the electronic device to supply power to the electronic device.

Specifically, the method in this embodiment may include the following steps:

step 101: monitoring information of a change in a voltage required by a second component in the electronic device.

The second component is a component that needs voltage signal support to operate in the electronic device, such as a component with computing capability, such as a central processing unit (cpu) (central processing unit) or a graphics processing unit (gpu) (graphics processing unit), and the second component may be in a power-on state or a state of running an application or implementing a function, such as playing a video, and the second component sends a voltage request instruction, such as an svid (system V Interface description) instruction, to the power supply to notify the power supply to output the required voltage to the first component, that is, to notify the power supply to output the voltage according to the first change mode in a first period of time in the future.

In the embodiment, when the change information of the voltage required by the second component is monitored, that is, when the voltage output information of the voltage in the first time period in the future is acquired, the change information of the voltage required by the second component, such as one or more of the rising change information, the falling change information, and the like, can be acquired by monitoring and interpreting the SVID command sent by the second component to the power supply.

The first time period is a time period after the current time, and is a future upcoming time period.

Step 102: and judging whether the change information meets the first control condition, namely judging whether a first change mode of voltage output of the power supply in a future first time period in the voltage output information meets the first control condition, and if so, executing step 103.

In this embodiment, whether the voltage output of the power supply needs to be controlled to reduce noise is determined by determining whether the variation information meets the first control condition.

Step 103: and controlling the power supply to output voltage according to a second change mode.

The second variation mode may be an output mode corresponding to the variation information meeting the first control condition.

It should be noted that, in the present embodiment, the first component in the electronic apparatus can be excited by the voltage signal to generate noise, and the intensity or duration of the sound generated by the first component is different because of the different parameters of the voltage signal. In this embodiment, the first component is excited under the voltage signal output by the power supply to generate noise, which may be understood as sound that produces a bad experience for the user.

In this embodiment, when the change information of the voltage required by the second component meets the first control condition, the power supply is controlled to output the voltage signal according to the second change mode, and the voltage signal is further controlled to change, so that in the second change mode of the power supply, the noise generated by the first component is less than or equal to the noise generated by the first component under the voltage required by the second component, that is, the noise generated by the first component excited by the voltage signal output by the power supply according to the second change mode is less than or equal to the noise generated by the first component excited by the voltage signal output by the power supply according to the second component required voltage, that is, the noise generated by the first component in the electronic device is reduced after the power supply outputs the voltage signal according to the second change mode.

As can be seen from the foregoing solution, in the control method disclosed in the first embodiment, when the power supply supplies power to the electronic device, the change information of the voltage required by the second component in the electronic device is monitored, and then, when the change information meets the first control condition, the power supply is controlled to output the voltage signal according to the second change mode to supply power to the electronic device, so that in the second change mode, the noise generated by the voltage signal output by the power supply of the first component capable of being excited by the voltage signal to generate sound in the electronic device is smaller than the noise generated by the voltage signal output by the power supply of the first component, thereby reducing noise. Therefore, in the embodiment, the change information of the voltage required by the second component is monitored, so that the output mode of the power supply is controlled, the noise of the first component is reduced, and the use experience of a user on the electronic equipment is obviously improved after the noise is reduced.

In one implementation, the first variation pattern meeting the first control condition may specifically be:

in the first variation mode, the amplitude and/or frequency of the variation caused by the voltage of the power supply that performs the voltage output during the first period, i.e., the required voltage of the second component, meets the first control condition.

The variation amplitude caused by the voltage required by the second component refers to the variation amplitude of the voltage variation formed on the second component and/or the first component when the power supply outputs the voltage signal according to the voltage required by the second component (namely, the voltage of the power supply outputting the voltage in the first variation mode within the first time period); the change frequency due to the voltage required by the second member means a change frequency of a voltage change formed in the second member or the first member when the power supply outputs a voltage signal in accordance with the voltage required by the second member. In this embodiment, the amplitude and/or frequency of the change caused by the voltage required by the second component can be obtained by analyzing the change of the voltage required by the second component.

Accordingly, the following situations can be included in the compliance of the variation amplitude and/or the variation frequency with the first control condition, for example:

the amplitude of the change caused by the required voltage of the second component meets a first control condition, where the first control condition may be that the amplitude of the voltage reduction is higher than an amplitude threshold value or that the amplitude of the voltage reduction within a certain time period is higher than an amplitude threshold value, etc., as shown in fig. 2, the amplitude of the change of the required voltage of the second component reaches 1000mv within 1 second, so that the output of the voltage signal generates a higher voltage difference on the first component, which causes a larger amplitude of vibration of the first component, and thus the intensity of generated noise is higher;

or

The frequency of the change caused by the required voltage of the second component corresponds to the first control condition. The first control condition here may be that the voltage change frequency is higher than a certain threshold or that the voltage change frequency within a certain period of time is higher than a certain threshold. As shown in fig. 3, the required voltage of the second component changes 5 times within 1 second, and the output change of the voltage signal 5 times within 1 second generates frequent differential pressure variation on the first component, thereby causing frequent vibration of the first component and thus frequent noise generation on the first component;

or

The change amplitude and the change frequency caused by the required voltage of the second component meet the first control condition, where the first control condition may be that the voltage reduction amplitude is higher than the amplitude threshold value and the voltage change frequency is higher than the frequency threshold value within a certain time period, for example, the voltage requirement of the second component is drastically changed during the power-on process, or, when a video playing application or a game application is running in the second component, the voltage requirement of the second component is drastically changed due to a drastic change of a picture or a drastic change of audio intensity, as shown in fig. 4, the change frequency of the required voltage of the second component reaches 3 times within 1 second and the change amplitude reaches 1000mv, so that the voltage signal which fluctuates drastically and frequently generates frequent and drastic pressure difference changes on the first component when being output to the first component, thereby causing frequent and high vibration amplitude of the first component, thus, the first member generates relatively frequent noise with high intensity.

Based on the above implementation, the second variation mode in the present embodiment may be:

the amplitude and/or frequency of the variation of the output voltage signal of the power supply complies with the second control condition.

Wherein the first control condition and the second control condition at least satisfy one of the following conditions:

the voltage variation amplitude in the second control condition is smaller than the voltage variation amplitude in the first control condition;

the voltage change frequency in the second control condition is smaller than the voltage change frequency in the first control condition.

That is to say, in this embodiment, the control power supply outputs the voltage signal according to the second variation mode, and there may be several specific implementation manners as follows:

controlling the power supply to output the voltage signal at a voltage change amplitude lower than that in the first control condition, for example, controlling the power supply to output the voltage signal based on the amplitude of the voltage signal currently output by the power supply, such as maintaining the current voltage signal constant or reducing an amplitude difference formed by the output voltage signal, so that the amplitude of the voltage signal actually output by the power supply is lower than that caused by the voltage required by the second component, as shown in fig. 5, thereby reducing the amplitude of the voltage change of the output voltage signal, thereby reducing a voltage difference formed by the voltage signal output to the first component on the first component, thereby reducing a vibration amplitude on the first component, and thereby reducing noise generated on the first component;

or

Controlling the power supply to output the voltage signal at a frequency lower than the voltage change frequency in the first control condition, for example, controlling the power supply to output the voltage signal based on the voltage signal currently output by the power supply, such as maintaining the current voltage signal or delaying the voltage change, thereby making the change frequency of the voltage signal actually output by the power supply significantly lower than the voltage change frequency caused by the voltage required by the second component, thereby reducing the voltage change frequency of the output voltage signal, thereby reducing the differential pressure variation frequency formed on the first component by the voltage signal output to the first component, thereby reducing the vibration frequency of the first component, and thereby reducing the noise generated on the first component;

or

Controlling the power supply to output the voltage signal according to a voltage variation coincidence and a voltage variation frequency which are lower than those in the first control condition, for example, controlling the power supply to output the voltage signal based on the voltage signal currently output by the power supply, such as reducing an amplitude difference formed by the output voltage signal and delaying the voltage variation, so that the amplitude of the voltage signal actually output by the power supply is reduced, and the variation frequency is reduced, so that the amplitude of the voltage variation and the voltage variation frequency of the output voltage signal are reduced, so that the voltage difference formed by the voltage signal output to the first component on the first component is reduced, the voltage difference fluctuation is reduced, so that the vibration amplitude on the first component is reduced, the vibration frequency on the first component is reduced, and the noise generated on the first component is reduced; for another example, based on the voltage signal currently output by the power supply, the power supply is controlled to output the voltage signal, for example, the current voltage signal is maintained constant, so that the voltage signal actually output by the power supply has a change amplitude of 0, and the change frequency is reduced to the lowest, thereby reducing the voltage change amplitude and the voltage change frequency of the output voltage signal, so as to reduce the voltage difference formed by the voltage signal output to the first component on the first component and reduce the voltage difference fluctuation, thereby reducing the vibration amplitude on the first component and reducing the vibration frequency on the first component, and thus reducing the noise generated on the first component.

Specifically, the second component is a component having a computing function, such as a CPU or a GPU, and correspondingly, the second variation mode may be: the power supply outputs a voltage signal to the second component with a fixed (constant) voltage amplitude, that is, the amplitude of the voltage signal actually output by the power supply does not change any more, that is, the change amplitude is 0, so that the voltage difference formed on the first component by the voltage signal output to the first component such as the ceramic capacitor is reduced, the vibration amplitude on the ceramic capacitor is reduced, and the noise generated on the ceramic capacitor is reduced.

Based on the above implementation, in this embodiment, the voltage requirement of the second component during the booting process of the second component may be recorded in advance or the voltage requirement of each application of the second component during operation may be recorded, and then the situations or states where the voltage requirement is changed drastically, such as application operation or booting, may be marked.

In one implementation, the required voltage of the second component has at least a first voltage range and a second voltage range, the magnitude of voltage change of the first voltage range being smaller than the magnitude of voltage change of the second voltage range. Specifically, the second component has at least one working mode, and the voltage change amplitude required by the second component in the corresponding working mode is different. For example, the CPU has a plurality of working modes such as C0-C10, and the CPU is dynamically switched between C1 and C10 without being fixed, so that the voltage required by the CPU has at least 10 voltage ranges, and the voltage change amplitude in each voltage range is different, for example, the voltage change amplitude of the required voltage between C0 and C7 is smaller than that of the required voltage in C8-C10. Therefore, when the CPU dynamically switches between the operating modes in C8-C10, the voltage change amplitude caused by the voltage required by the CPU is significantly large, and the voltage change across the ceramic capacitor may be large, for example, the voltage difference can reach 1000mv or even higher, and then significant noise may be heard, whereas when the CPU dynamically switches between the operating modes in C0 to C7, the voltage change amplitude caused by the voltage required by the CPU is small, the voltage change across the ceramic capacitor is sharply reduced, and the voltage difference may not reach 400mv, so the noise on the ceramic capacitor may be significantly small.

Correspondingly, in order to reduce noise, in this embodiment, the controlling the power supply to output the voltage according to the second variation mode may specifically be:

and controlling the power supply to output a voltage signal to the second component at a voltage variation amplitude corresponding to the first voltage range. That is, the power supply is controlled to output the voltage signal to the second component according to the voltage variation amplitude corresponding to the second component in the first operating mode, and the first operating mode may be an operating mode in which the voltage signal output by the power supply does not fluctuate frequently and drastically any more. For example, for the CPU, the power supply is controlled to output a voltage signal to the CPU according to the voltage requirement of the CPU in one of the operating modes C0 to C7, so that the CPU operates in the operating mode C0 to C7, the voltage signal output by the power supply does not fluctuate frequently and drastically any more, the effect of reducing the voltage variation range is achieved, and thus a large voltage difference is not generated on components such as a ceramic capacitor, and the like, thereby reducing noise.

In an implementation manner, the step of controlling the power supply to output the voltage according to the second variation mode may specifically be:

the control power supply refuses to respond to the voltage request command of the second component and outputs a voltage signal according to a second change mode.

For example, in the present embodiment, a specific interface is processed by using an SVID ignore (bypass) function of the CFG9Strap of the second component in the electronic device. Specifically, by using the characteristics of the interface CFG9, that is, grounding the interface CFG9 and not executing the SVID command, and by using the dummy (flowing) interface CFG9, executing the SVID command normally, it is possible to control whether or not to execute the SVID by setting the interface CFG 9. The specific setting method can use the existing chip EC which has general Purpose Input/output GPIO (general Purpose Input/output) and uses the GPIO of the EC to be connected with the CFG9 of the second part, so that the GPIO of the EC can be used for setting functions, the state of the interface CFG9 can be conveniently set, and whether the SVID is normally executed or not can be conveniently controlled. The CFG9 is set to low level so that the power supply no longer receives and no longer responds to the voltage request command of the second component, such as the SVID command, and the power supply outputs a voltage signal according to the second variation pattern, such as outputting the voltage signal to the second component at a constant voltage, and the voltage signal does not fluctuate frequently and drastically any more so that a large voltage difference is not generated across components such as a ceramic capacitor, and thus noise reduction is achieved.

In one implementation, the method in this embodiment may further include the following steps, as shown in fig. 6:

step 104: and judging whether the first change mode meets the second control condition, and if so, executing the step 105.

The second control condition is different from the first control condition, and the noise generated by the first component is smaller than or equal to the noise generated by the first component in the first change mode corresponding to the first control condition in the first change mode corresponding to the second control condition. That is, the noise generated by the first component when the voltage output of the power supply in the future first period of time meets the second control condition is less than or equal to the noise generated by the first component when the voltage output of the power supply in the future first period of time meets the first control condition. Thus, when the voltage output of the power supply during the future first time period no longer meets the first control condition but meets the second control condition, indicating that the noise generated by the first component has been reduced, e.g., to a level acceptable to the user, step 105 may be performed.

Step 105: and controlling the power supply to output voltage according to the first change mode.

The first variation mode may be that the power supply does not violate the requirement of the second component for the voltage signal, so that when the first variation mode meets the second control condition, the voltage signal is still output according to the voltage required by the second component in the embodiment, and at this time, no large noise is generated.

In an implementation manner, the present embodiment may further include the following implementation:

the method includes monitoring an operating state of the electronic device, for example, acquiring an output current of the second component, and determining whether a corresponding execution condition is met, where the execution condition may be a condition that the electronic device is in a low-power operation, such as a condition that the second component is in a low-power operation or a low-load operation, to determine whether the electronic device is in a low-load or low-power state, such as a power-on state, and then, if the electronic device is in a low-load or low-power state, such as a power-on state, executing the above control of the power supply to output the voltage signal according to the second variation mode in the present embodiment, and if the electronic device is not in the above state, no longer executing output control of the voltage signal of the power supply.

It can be seen that in this embodiment, the current operating state of the electronic device or the second component is monitored, for example, the output current of the second component is collected to determine whether the second component is in the low-power or low-load operating state, such as a power-on state, and if the second component is in the power-on state, it indicates that the second component does not require the voltage variation amplitude, the voltage variation frequency, or whether the voltage is reduced to the required voltage value within the waveform period or a certain time period, at this time, the voltage variation amplitude and/or the voltage frequency of the voltage signal output by the power supply may be controlled, and then the voltage may not be reduced to the required voltage value within a fixed time period, but since the second component is in the power-on state at this time, no application or function is run on the second component, so that no great influence is generated on the use of the user, this makes it possible to greatly reduce the noise generated in the first member.

In addition, if the output current of the second component does not meet the execution condition, it indicates that the electronic device or the second component is not in the power-on state, and if the voltage change amplitude or the voltage change frequency is reduced, the normal operation of the electronic device or the second component may be adversely affected, and therefore, the voltage signal output of the power supply is not controlled at this time.

It should be noted that the above judgment of the execution condition can be performed before step 101 or after step 101, and different technical solutions formed by different execution orders belong to the inventive concept of the present disclosure, and these technical solutions are all within the scope of the present disclosure as claimed.

Referring to fig. 7, a schematic structural diagram of a control apparatus according to a second embodiment of the present disclosure is provided, where the apparatus may be applied to an electronic device with a power supply, such as a mobile phone, a pad, or a notebook, and in the electronic device, the power supply is instructed by the electronic device to supply power to the electronic device.

In this embodiment, the apparatus may specifically include the following structure:

the detector 701 acquires voltage output information of the power supply, wherein the voltage output information indicates that the power supply will output voltage according to a first change mode in a first time period in the future, and specifically, the detector 701 is used for monitoring change information of voltage required by a second component of the electronic equipment when the power supply is used for supplying power to the electronic equipment.

The second component is a component that needs voltage signal support to operate in the electronic device, such as a component with computing capability, for example, a component such as a CPU or a GPU, and the second component notifies the power supply to output the required voltage to the second component by sending a voltage request command, such as an SVID command, to the power supply.

In the present embodiment, the detector 701 may obtain the change information of the voltage required by the second component, such as one or more of the change information of the rising and falling, by monitoring and interpreting the SVID command sent by the second component to the power supply when monitoring the change information of the voltage required by the second component.

The controller 702 is configured to control the power supply to output the voltage according to the second variation mode in response to the first variation mode meeting the first control condition, and specifically, the controller 702 controls the power supply to output the voltage according to the second variation mode in response to the variation information meeting the first control condition.

In this embodiment, the controller 702 determines whether to control the voltage output of the power supply to reduce noise by determining whether the variation information meets the first control condition.

It should be noted that, in this embodiment, the electronic device may further include a first component in addition to the second component, where the first component can be excited by the voltage signal to generate noise, and the intensity or duration of the sound generated by the first component is different because of the parameter of the voltage signal. In this embodiment, the first component is excited under the voltage signal output by the power supply to generate noise, which may be understood as sound that produces a bad experience for the user.

In this embodiment, the controller 702 controls the power supply to output the voltage signal according to the second variation mode when the variation information of the voltage required by the second component meets the first control condition, and further controls the voltage signal to vary, so that, in the second variation mode of the power supply, the noise generated by the first component is less than or equal to the noise generated by the first component under the voltage required by the second component, that is, the noise generated by the first component excited by the voltage signal output by the power supply according to the second variation mode is less than or equal to the noise generated by the first component excited by the voltage signal output by the power supply according to the voltage required by the second component, that is, after the power supply outputs the voltage signal according to the second variation mode, the noise generated by the first component in the electronic device is reduced.

Wherein, the change information accords with the first control condition, including:

in the first variation mode, the amplitude and/or frequency of the variation caused by the voltage of the power supply that performs the voltage output during the first period, i.e., the required voltage of the second component, meets the first control condition. Accordingly, the second variation mode includes: the variation amplitude and/or the variation frequency of the output voltage signal of the power supply accord with a second control condition;

Specifically, the second component is a component having a calculation function; accordingly, a second variation mode includes: the power supply outputs a voltage signal to the second component at a fixed voltage magnitude.

In one implementation, the required voltage of the second component has at least a first voltage range and a second voltage range, the magnitude of voltage change of the first voltage range being smaller than the magnitude of voltage change of the second voltage range. The second component has at least one operating mode, and the voltage variation amplitude required by the second component in the corresponding operating mode is different. Accordingly, a second variation mode includes: the power supply outputs a voltage signal to the second component at a voltage variation amplitude corresponding to the first voltage range.

In one implementation, the controller 702 controls the power supply to output the voltage signal according to the second variation mode, which may specifically be: the control power supply refuses to respond to the voltage request command of the second component and outputs a voltage signal according to a second change mode.

Further, in this embodiment, the controller 702 may further be configured to:

and in response to that the first change mode accords with a second control condition, controlling the power supply to output a voltage signal according to the first change mode, wherein the second control condition is different from the first control condition, and the noise generated by the first component in the first change mode corresponding to the second control condition is less than or equal to the noise generated in the first change mode corresponding to the first control condition.

As can be seen from the above solution, in the control device disclosed in the second embodiment, when the power supply supplies power to the electronic device, the change information of the voltage required by the second component in the electronic device is monitored, and further, when the change information meets the first control condition, the power supply is controlled to output the voltage signal according to the second change mode to supply power to the electronic device, so that in the second change mode, the noise generated by the voltage signal output by the power supply of the first component capable of being excited by the voltage signal to generate sound in the electronic device is less than or equal to the noise generated by the voltage signal output by the power supply of the first component, thereby reducing noise. Therefore, in the embodiment, the change information of the voltage required by the second component is monitored, so that the output mode of the power supply is controlled, the noise of the first component is reduced, and the use experience of a user on the electronic equipment is obviously improved after the noise is reduced.

Referring to fig. 8, a schematic structural diagram of an electronic device provided in a third embodiment of the present disclosure is shown, where the electronic device may be a mobile phone, a pad, or a notebook.

In this embodiment, the electronic device may include the following structure:

the first part 801, the first part 801 can be excited by voltage signal to generate sound, such as ceramic capacitor.

The second component 802 may be a component with computing power, such as a CPU or GPU.

And a power supply 803 for supplying power to the electronic device.

A processor 804 for executing an application to implement the following functions: the processor 804 is configured to monitor change information of a voltage required by the second component 802, and in response to the change information meeting the first control condition, control the power supply to output a voltage signal according to the second change mode. The application program may be software or code preset in the memory, and the processor 804 includes a kernel, and the kernel calls and runs the application program in the memory to implement a corresponding function. The memory may include volatile memory in a computer readable medium, Random Access Memory (RAM) and/or nonvolatile memory such as Read Only Memory (ROM) or flash memory (flash RAM), and the memory includes at least one memory chip.

The second unit 802 sends a voltage request command, such as an SVID command, to the power supply 803 to notify the power supply 803 to output the required voltage to the second unit 802. In this embodiment, when monitoring the change information of the voltage required by the second component 802, the processor 804 may obtain the change information of the voltage required by the second component 802, such as one or more of the change information of the rising and falling, by monitoring and interpreting the SVID command sent by the second component 802 to the power supply 803.

It is noted that the processor 804 may be the same component as the second component 802, for example, a CPU may provide computing power and may also implement the functions of the processor 804.

In this embodiment, the processor 804 determines whether to control the voltage output of the power supply 803 to reduce noise by determining whether the change information meets the first control condition.

It should be noted that, in the present embodiment, the intensity or duration of the sound generated by the first component 801 is different due to the different parameters of the voltage signal. In this embodiment, the first component 801 is excited by the voltage signal output by the power source 803 to generate noise, which may be understood as sound that produces a bad experience for the user.

In this embodiment, the variation information of the voltage required by the processor 804 in the second component 802 is consistent with

Under the first control condition, the control power source 803 outputs the voltage signal according to the second variation mode, and the control voltage signal is varied, so that in the second variation mode of the power source 803, the noise generated by the first component 801 is less than or equal to the noise generated by the first component 801 at the voltage required by the second component 802, that is, the noise generated by the first component 801 excited by the voltage signal output by the power source 803 according to the second variation mode is less than or equal to the noise generated by the first component 801 excited by the voltage signal output by the power source 803 according to the voltage required by the second component 802, that is, the noise generated by the first component 801 in the electronic device is reduced after the power source 803 outputs the voltage signal according to the second variation mode.

in the first variation mode, the amplitude and/or frequency of the variation caused by the voltage of the power supply outputting the voltage in the first period, i.e., the required voltage of the second component 802, is in accordance with the first control condition. Accordingly, the second variation mode includes: the variation amplitude and/or variation frequency of the output voltage signal of the power supply 803 meets the second control condition;

Specifically, the second component 802 is a component having a calculation function; accordingly, a second variation mode includes: the power supply 803 outputs a voltage signal to the second section 802 at a constant voltage amplitude.

In one implementation, the desired voltage of the second component 802 has at least a first voltage range and a second voltage range, the magnitude of voltage change of the first voltage range being less than the magnitude of voltage change of the second voltage range. The second component 802 has at least one operating mode, and the voltage change required by the second component 802 in the respective operating mode is different in magnitude. Accordingly, a second variation mode includes: the power supply 803 outputs a voltage signal to the second section 802 with a voltage variation amplitude corresponding to the first voltage range.

In one implementation, the processor 804 controls the power supply 803 to output the voltage signal according to the second variation mode, which may specifically be: the control power supply 803 rejects the response to the voltage request instruction of the second section 802 and outputs the voltage signal in accordance with the second variation pattern.

Further, in this embodiment, the processor 804 may be further configured to:

in response to the first variation mode, that is, the variation information, meeting the second control condition, the control power source 803 outputs the voltage signal according to the first variation mode, where the second control condition is different from the first control condition, and in the first variation mode corresponding to the second control condition, the noise generated by the first component 801 is less than or equal to the noise generated in the first variation mode corresponding to the first control condition.

As can be seen from the foregoing solution, in the electronic device disclosed in the third embodiment, when the power supply supplies power to the electronic device, the change information of the voltage required by the second component in the electronic device is monitored, and further, when the change information meets the first control condition, the power supply is controlled to output the voltage signal according to the second change mode to supply power to the electronic device, so that in the second change mode, noise generated by the voltage signal output by the power supply of the first component capable of being excited by the voltage signal to generate sound in the electronic device is less than or equal to noise of the first component at the voltage required by the second component, thereby reducing noise. Therefore, in the embodiment, the change information of the voltage required by the second component is monitored, so that the output mode of the power supply is controlled, the noise of the first component is reduced, and the use experience of a user on the electronic equipment is obviously improved after the noise is reduced.

The following takes the electronic device as a notebook, the second component as a CPU, and the first component as a ceramic capacitor as an example, and illustrates the scheme in this embodiment:

in the conventional notebook computer, during the startup period, the CPU will request the power supply to adjust the voltage through the SVID command, and the output voltage of the power supply will fluctuate frequently and drastically as shown in fig. 9, thereby causing the user to hear a noticeable audio noise during the startup.

In order to reduce noise, in this embodiment, the output voltage behavior of the power supply is separately controlled by changing the voltage behavior of the CPU during the system startup period, such as: a start-up period voltage and a start-up completion voltage. By designing a mechanism for completing boot startup of a Detect (initialization in graphic mode) system: during the starting, the SVID voltage adjusting instruction is not executed, if the SVID instruction is refused to respond, the fixed Boot voltage is maintained, as shown in fig. 10, the problem of audio noise generated by the SVID voltage adjusting instruction is solved, and during the starting, the existing functions of a CPU and a system are not influenced, the reliability of the system is not influenced, and the picture display Performance is not influenced; and when the Detect system mechanism indicates that the startup is finished, the system recovers a normal working mode, namely that the power supply executes an instruction of adjusting the voltage by the SVID of the CPU.

As shown in fig. 11, the implementation in this embodiment is as follows:

1. starting up the system, outputting the power supply voltage, and executing step 2 when judging that the SVID instruction of the CPU indicates that the voltage signal changes violently, without executing SVID voltage adjustment;

2. maintaining the voltage to be fixed until the system is started, and executing step 3;

3. the power supply responds to the SVID instruction of the CPU, and the CPU and the power supply work normally.

In the concrete implementation, when the computer is started, the CPU is dynamically switched from C0-C10 state unfixed, so that the voltage change of two poles of the ceramic capacitor is huge, the delta V is more than 1000mV, and obvious nourishing power supply noise can be heard. And if the CPU is only dynamically switched between C0-C7 when the computer is started, the voltage change of the two poles of the ceramic capacitor MLCC is sharply reduced, and the delta V is less than 400 mV. In the embodiment, the change range of the CPU dynamic Power supply voltage under C0-C7 is obviously smaller than that under C0-C10, and the C State of the CPU is limited to be C0-C7 in the period of Power On, so that the effect of reducing the voltage change range is achieved, and the problem of Power supply noise when the computer is started is solved. And after the system is started, the limitation is removed, and the normal C State is recovered. Specifically, as shown in FIG. 12, the computer is started at C7state, timing is started when the power on signal goes low, the BIOS is notified to modify C7state to default Ctate after a delay of 10s, the BIOS receives a command to modify Ctate to default, the modification is set to C7state until power off goes low, the computer is started again at C7 after waiting for the next start.

In another implementation, the present embodiment utilizes the existing interface of the CPU: the CFG9 interface, which has a bypass function for SVID, does not execute SVID commands when CFG9 is grounded, as shown in FIG. 13, when CFG9 is not grounded, i.e., Floating, the power supply normally executes SVID commands.

Specifically, in this embodiment, a GPIO settable function of the embedded controller EC (embedded controller) may be used to change the current direct ground interface to a GPIO connected to the EC, as shown in fig. 14, when the system powers On, the GPIO is set to low, and then the CFG9 connected to the GPIO is grounded, so that the SVID command may be ignored, the CPU voltage is fixed, and after the Power On is completed, the GPIO is set to high, and the Power supply normally responds to the SVID of the CPU. The dynamic control scheme can solve the problem of obvious audio noise during starting and simultaneously ensure the normal function of the system.

Referring to fig. 15, which is a flowchart of a control method provided in a fourth embodiment of the present disclosure, the method in this embodiment is applicable to an electronic device having a power supply, such as a device like a mobile phone, a pad, or a notebook, in which the power supply is instructed by the electronic device to supply power to the electronic device, for example, a second component in the electronic device, such as a central processing unit (cpu) (central processing unit) component, may send a voltage request instruction, such as an SVID (systematic Interface description) instruction, to the power supply to notify the power supply to output a required voltage to a first component, that is, notify the power supply to output a voltage according to a first change mode in a first period of time in the future, and accordingly, the power supply responds to the SVID instruction to supply power to the electronic device. The electronic device includes a first component, such as a ceramic capacitor, which is excited by the voltage signal to generate sound, and the ceramic capacitor vibrates due to the transmission of the voltage signal, thereby generating noise that may adversely affect a user.

The method in this embodiment may include the following steps to address the above noise problem:

step 1501: the switching frequency of the power supply is monitored.

Specifically, the switching frequency of the power supply refers to the switching frequency of a power converter performing DC transmission in the power supply, such as a DC/DC (direct current/direct current) power converter, which is used as a switching power supply chip, and the input electric energy is stored in a capacitor (inductor) by performing a high-frequency switching operation through a controllable switch by using the energy storage characteristics of the capacitor and the inductor, and when the switch is turned off, the electric energy is released to a load to provide energy. During this period, the frequency of the switching operation of the power converter is the switching frequency of the power supply, at which the first component can be excited by the voltage signal output by the power supply at the switching frequency to generate noise, and particularly when the switching frequency is reduced to below 20khz, the noise is very obvious, and it can be seen that the magnitude of the switching frequency is related to the intensity of the noise, and is related to whether the user can receive the noise at the corresponding intensity. In this embodiment, the switching frequency of the power supply is monitored and obtained.

The first time period refers to a time period after the current time, and is a future upcoming time period, such as the next second or the next two seconds.

Step 1502: and judging whether the switching frequency meets the first control condition, if so, executing the step 1503.

Wherein, whether the switching frequency meets the first control condition is: in the power output information, whether a first change mode of voltage output of the power supply in a first future time period meets a first control condition or not, specifically, whether the switching frequency meets the first control condition or not represents whether noise generated by the first component is caused by discomfort of the switching frequency or not, and the discomfort of the switching frequency may cause the noise generated by the first component to affect the use experience of a user. For example, if the switching frequency meets the first control condition, it indicates that the noise generated by the first component may be caused by the switching frequency being inappropriate, e.g., the switching frequency is low, step 1503 is performed, and if the switching frequency does not meet the first control condition, it indicates that the noise generated by the first component may not be caused by the switching frequency being inappropriate, step 1503 is not performed, and the switching frequency is determined by the power supply according to the requirement and the self-state thereof, i.e., the power supply is controlled to continue to output the voltage according to the first variation mode.

Step 1503: the power supply is controlled to execute a first frequency variation mode.

The first frequency variation mode refers to a frequency variation mode of a switching frequency of the power supply, that is, in this embodiment, when it is determined that the switching frequency meets the first control condition, the noise generated by the first component due to the inappropriate switching frequency affects the user experience, at this time, the power supply is controlled not to output the voltage according to the original frequency variation mode, that is, the first variation mode in the foregoing, but to output the voltage signal according to the switching frequency in the first frequency variation mode, that is, the second variation mode in the foregoing, so as to reduce or avoid the noise generated by the first component due to the inappropriate switching frequency.

As can be seen from the foregoing solution, in a control method provided in a first embodiment of the present disclosure, when a power supply is used to supply power to an electronic device that includes a first component that is excited by a voltage signal to generate sound, a switching frequency of the power supply is monitored, and the first component is excited by the voltage signal output by the power supply at the switching frequency to generate noise, so that when the switching frequency meets a first control condition, and the noise generated on the first component at the switching frequency satisfies a certain condition, the power supply is controlled to execute a first frequency change mode, so that the switching frequency of the power supply at the time of outputting the voltage signal is changed, thereby improving an influence of the noise generated on the first component on a user, and thus achieving a significant improvement of a user experience of the electronic device after noise reduction.

Furthermore, the loss can be effectively reduced by reducing the noise in the embodiment, so that the purpose of saving energy is achieved, and the service life of the power supply is prolonged.

In an implementation manner, in this embodiment, the controlling the power supply to execute the first frequency variation mode, that is, the controlling the power supply to output the voltage according to the second variation mode may specifically be:

and controlling the switching frequency of the power supply output voltage signal to dynamically change in a target frequency range.

Wherein, the dynamic change of the switching frequency of the control power supply output voltage signal in the target frequency range can be understood as: the control power supply dynamically selects a frequency within a target frequency range to output a voltage signal as a switching frequency, as shown in fig. 16, the target frequency range includes several frequency values such as A, B, C, D, the control power supply selects a to output a voltage signal as a switching frequency, then controls C to output a voltage signal as a switching frequency, and then controls D to output a voltage signal as a switching frequency, and so on, that is, the power supply does not output a voltage signal at a fixed switching frequency, but continuously selects a different frequency value within the target frequency range to output a voltage signal as a switching frequency. Therefore, the switching frequency is changed continuously, so that the vibration, such as resonance and the like, caused by the original fixed switching frequency to the first component is broken, the noise is reduced, and the noise reduction is realized.

Specifically, in this embodiment, the switching frequency for controlling the power supply output voltage signal dynamically changes within the target frequency range, which can be implemented as follows:

and controlling the switching frequency of the power supply output voltage signal to be a corresponding frequency value selected according to a random algorithm in a target frequency range.

That is, in the present embodiment, the power supply is controlled to randomly select a frequency value within the target frequency range as the switching frequency for outputting the voltage signal, that is, the switching frequency of the power supply randomly and dynamically changes within the target frequency range.

Alternatively, in this embodiment, the switching frequency of the power supply output voltage signal is controlled to dynamically change within the target frequency range, which may be implemented as follows:

and controlling the switching frequency of the power supply output voltage signal to be a corresponding frequency value selected according to a linear or nonlinear selection algorithm in a target frequency range.

That is, in the present embodiment, the power supply is controlled to select a frequency value as a switching frequency in a target frequency range for outputting a voltage signal according to a linear selection algorithm, where the linear selection algorithm may be: sequentially selecting corresponding frequency values in the target frequency range from small to large or from large to small, wherein the difference between the selected frequency values is equal, at this time, the switching frequency of the power supply output voltage signal is linearly increased or decreased, for example, the switching frequency is from 10k to 20k, and the switching frequency selected each time is increased or decreased by 1k compared with the previous selection, for example, the switching frequency selected each time is: 10k, 11k, 12k, 13k, etc.;

or, in this embodiment, the power supply is controlled to select a frequency value as a switching frequency in a target frequency range according to a nonlinear selection algorithm to output the voltage signal, where the nonlinear selection algorithm may be: selecting corresponding frequency values in the target frequency range in the order from small to large or from large to small, wherein the difference between the selected frequency values is different or the same (not the difference between the frequency values selected each time is the same, i.e. non-linear), at this time, the switching frequency of the voltage signal of the voltage output is increased or decreased non-linearly, for example, the switching frequency is between 10k and 20k, and the difference between the switching frequency selected each time and the switching frequency selected last time is different from the difference of the switching frequency selected last time, for example, the switching frequency selected each time is respectively: 10k, 11k, 14k, 16k, 19k, etc.

In one implementation, the first variation pattern meeting the first control condition is: the switching frequency meets a first control condition, which may specifically be:

the switching frequency of the power supply for voltage output is in the sound frequency range, so that the first component generates resonance noise.

That is, in the present embodiment, when the switching frequency of the output voltage signal is in the range of the sound frequency that can generate the resonance noise with the first component, for example, when the switching frequency of the power supply enters the low frequency of 20kHz or below, or when the switching frequency is at the low frequency of 20kHz or below and is fixed, the power supply may generate the resonance phenomenon with the ceramic capacitor or other devices, and the resonant ceramic capacitor may generate the high resonance noise, such as the obvious "zizizi" noise.

Specifically, the maximum noise in the sound frequency range may be a frequency corresponding to a first threshold, and the first threshold may be a frequency value that generates resonance for the first component, such as a first threshold of 20kHz, so that, if it is determined that the switching frequency is in the sound frequency range where the maximum noise is 20kHz, that is, lower than 20kHz, it may be determined that the noise generated by the first component may be caused by discomfort of the switching frequency, and at this time, the power supply is controlled to execute a first frequency changing mode, such as controlling the switching frequency of the power supply output voltage signal to dynamically change within a target frequency range, and not be at an initial switching frequency, or not be maintained at a fixed switching frequency, so as to break the resonance of the first component, and implement noise reduction.

In a specific implementation, the target frequency range in which the switching frequency is located in the first frequency variation mode may at least include a frequency corresponding to the first threshold, for example, the target frequency range includes a frequency range of 20 kHz. For example, if the switching frequency is determined to be in the sound frequency range with the maximum noise of 20kHz in the present embodiment, it may be determined that the noise generated by the first component may be caused by the discomfort of the switching frequency, and the switching frequency of the power supply output voltage signal is controlled to dynamically change in the frequency range around 20kHz, and is no longer in the initial switching frequency, or is no longer maintained at the fixed switching frequency of 22kHz, 20kHz or 18kHz, but dynamically changes in these frequencies, so that the resonance of the first component is broken, and the noise reduction is realized.

Or, in a specific implementation, a maximum value in a target frequency range where the switching frequency is located in the first frequency variation mode is less than or equal to the target frequency, where the target frequency is a frequency corresponding to the first threshold, that is, the maximum value in the target frequency range is less than or equal to a frequency corresponding to the first threshold, for example, the maximum value is 20 kHz. For example, if the switching frequency is determined to be in the sound frequency range with the maximum noise of 20kHz in the present embodiment, it may be determined that the noise generated by the first component may be caused by the discomfort of the switching frequency low frequency, and at this time, the switching frequency of the power supply output voltage signal is controlled to dynamically change in the frequency range with the maximum value of 20kHz, and is no longer in the initial switching frequency, or is no longer maintained at the fixed switching frequency of 20kHz, but dynamically changes in these frequencies, such as randomly changes in the frequencies of 20kHz and below, so as to break the resonance of the first component, and implement noise reduction.

Specifically, the sound frequency range in the present embodiment is a low frequency range within an auditory frequency range, that is, a low frequency range in a frequency range that can be perceived by human ears, such as a range near or below 20 kHz. That is, in this embodiment, when the switching frequency of the power supply is lower than a certain frequency, for example, 20kHz, noise may be generated on the first component, and at this time, in order to reduce or avoid such noise, in this embodiment, the switching frequency of the power supply output voltage signal is controlled to dynamically change in a low frequency range, for example, the switching frequency dynamically changes in a range below 20kHz and is no longer maintained at 20kHz, so that the resonance phenomenon can be broken, and noise reduction is achieved.

Fig. 17 is a schematic structural diagram of a control apparatus according to a fifth embodiment of the present disclosure, where the control apparatus is suitable for an electronic device with a power supply, such as a mobile phone, a pad, or a notebook, and in the electronic device, the power supply is instructed by the electronic device to supply power to the electronic device. The electronic device includes a first component, such as a ceramic capacitor, which is excited by the voltage signal to generate sound, and the ceramic capacitor vibrates due to the transmission of the voltage signal, thereby generating noise that may adversely affect a user.

In this embodiment, the apparatus may include the following structure:

the detector 1701 obtains voltage output information of the power supply, the voltage output information indicating that the power supply will perform voltage output according to a first variation pattern in a first period of time in the future, and specifically, the detector 1701 is used for monitoring the switching frequency of the power supply when the power supply is used for supplying power to the electronic device.

The controller 1702 is configured to control the power supply to output the voltage according to the second variation mode in response to the first variation mode meeting the first control condition, and specifically, the controller 1702 controls the power supply to execute the first frequency variation mode in response to the switching frequency meeting the control condition.

Wherein, whether the switching frequency meets the first control condition is: in the power output information, whether a first variation pattern of the voltage output by the power supply in a first future time period meets a first control condition, specifically, whether the switching frequency meets the first control condition indicates whether noise generated by the first component is caused by discomfort of the switching frequency, which may cause the noise generated by the first component to affect the user experience, and therefore, in this embodiment, the controller 1702 determines whether the noise generated by the first component is caused by the switching frequency by determining whether the switching frequency meets the first control condition, for example, the switching frequency is low, and thus, corresponding operations are performed, for example, the power supply is controlled to perform the first frequency variation pattern.

It should be noted that the first frequency variation mode is a frequency variation mode of the switching frequency of the power supply, that is, in this embodiment, when the controller 1702 determines that the switching frequency meets the first control condition, the controller characterizes that noise generated by the first component due to the switching frequency being inappropriate affects use experience of a user, and at this time, the power supply is controlled to output a voltage signal according to the switching frequency in the first frequency variation mode, so as to reduce or avoid the noise generated by the first component due to the switching frequency being inappropriate.

The controller 1702 controls the power supply to execute the first frequency variation mode, that is, controls the power supply to output voltage according to the second variation mode, and includes:

and controlling the switching frequency of the power supply output voltage signal to dynamically change in a target frequency range. For example, the switching frequency of the power supply output voltage signal is controlled to a corresponding frequency value within the target frequency range selected according to a random algorithm, or the switching frequency of the power supply output voltage signal is controlled to a corresponding frequency value within the target frequency range selected according to a linear or non-linear selection algorithm.

Specifically, the first variation mode meeting the first control condition is: the switching frequency meets a first control condition, and specifically comprises:

the switching frequency of the power supply for voltage output is in the sound frequency range, so that the first component generates resonance noise. For example, the maximum frequency in the sound frequency range is the frequency corresponding to the first threshold; correspondingly, in the first frequency variation mode, the target frequency range in which the switching frequency is located at least includes the frequency corresponding to the first threshold. Or the maximum frequency in the sound frequency range is the frequency corresponding to the first threshold; correspondingly, in the first frequency variation mode, the maximum frequency in the target frequency range where the switching frequency is located is less than or equal to the target frequency, and the target frequency is the frequency corresponding to the first threshold. The sound frequency range is a low frequency range in the audible frequency range.

It can be seen from the foregoing solution that, in the fifth embodiment of the present disclosure, when a power supply is used to supply power to an electronic device including a first component which is excited by a voltage signal to generate sound, the switching frequency of the power supply is monitored, and the first component is excited by the voltage signal output by the power supply at the switching frequency to generate noise, so that in response to the switching frequency meeting a first control condition, when the noise generated on the first component at the switching frequency satisfies a certain condition, the power supply is controlled to execute a first frequency change mode, so as to change the switching frequency of the power supply when outputting the voltage signal, thereby improving the influence of the noise generated on the first component on a user, and thus achieving obvious improvement of user experience of the electronic device after noise reduction.

Referring to fig. 18, a schematic structural diagram of an electronic device according to a sixth embodiment of the present disclosure is shown, where the electronic device may be a mobile phone, a pad, or a notebook.

In this embodiment, the electronic device may include the following structure:

a power supply 1801, the power supply 1801 is configured to supply power to the electronic device, and the power supply 1801 has a first variation mode when outputting voltage, for example, the power supply 1801 has a switching frequency.

The CPU in the electronic device sends an SVID command to the power supply 1801, and the power supply 1801 responds to the SVID command to supply power to the electronic device. The switching frequency of the power source 1801 is the switching frequency of a power converter performing DC transmission in the power source 1801, such as a DC/DC (direct current/direct current) power converter, which is used as a switching power chip, and utilizes the energy storage characteristics of a capacitor and an inductor to perform high-frequency switching through a controllable switch, so as to store the input electric energy in the capacitor (inductor), and when the switch is turned off, the electric energy is released to a load to provide energy.

The first component 1802 is excited by a voltage to generate noise, for example, a voltage signal output by the power supply 1801 at a switching frequency.

When the power supply 1801 supplies power to the electronic device, at the switching frequency of the power supply 1801, the first component 1802 can be excited by a voltage signal output by the power supply 1801 at the switching frequency to generate noise, and the magnitude of the switching frequency is related to the intensity of the noise and whether a user can receive the noise at the corresponding intensity.

A processor 1803, configured to execute an application program to implement the following functions: acquiring voltage output information of the power supply 1801, wherein the voltage output information indicates that the power supply 1801 will perform voltage output in a first change mode in a first time period in the future, and in response to that the first change mode meets a first control condition, controlling the power supply 1801 to perform voltage output in a second change mode, wherein in the first change mode, first noise generated by the electronic device is greater than or equal to second noise generated by the electronic device in the second change mode. Specifically, the processor 1803 is configured to: the switching frequency of the power supply 1801 is monitored, and in response to the switching frequency meeting a control condition, the power supply 1802 is controlled to execute a first frequency variation mode. The application program may be software or code preset in the memory, and the processor 1803 includes a kernel, and the kernel calls and runs the application program in the memory to implement a corresponding function. The memory may include volatile memory in a computer readable medium, Random Access Memory (RAM) and/or nonvolatile memory such as Read Only Memory (ROM) or flash memory (flash RAM), and the memory includes at least one memory chip.

Whether the switching frequency meets the first control condition indicates whether the noise generated by the first component 1802 is caused by the switching frequency being inappropriate, which may cause the noise generated by the first component 1802 to affect the user experience, and therefore, in the present embodiment, the processor 1803 determines whether the noise generated by the first component 1802 is caused by the switching frequency by determining whether the switching frequency meets the first control condition, so as to control the power supply 1802 to execute a corresponding scheme, such as executing the first frequency conversion mode.

It should be noted that the first frequency variation mode is a frequency variation mode of the switching frequency of the power supply 1801, that is, in this embodiment, when the processor 1803 determines that the switching frequency meets the first control condition, the processor 1803 indicates that noise generated by the first component 1802 due to the switching frequency discomfort affects use experience of a user, and at this time, the power supply 1801 is controlled to output a voltage signal according to the switching frequency in the first frequency variation mode, so as to reduce or avoid the noise generated by the first component 1802 due to the switching frequency discomfort.

The processor 1803 controls the power supply to output voltage according to the second change mode, that is, controls the power supply to execute the first frequency change mode, and specifically includes:

the switching frequency of the output voltage signal of the control power supply 1801 is dynamically varied within the target frequency range. For example, the switching frequency of the voltage signal output by the power supply 1801 is controlled to be a corresponding frequency value selected according to a random algorithm within the target frequency range, or the switching frequency of the voltage signal output by the power supply 1801 is controlled to be a corresponding frequency value selected according to a linear or non-linear selection algorithm within the target frequency range.

the switching frequency of the power supply for voltage output is in the acoustic frequency range, so that the first section 1802 generates resonance noise. For example, the maximum frequency in the sound frequency range is the frequency corresponding to the first threshold; correspondingly, in the first frequency variation mode, the target frequency range in which the switching frequency is located at least includes the frequency corresponding to the first threshold. Or the maximum frequency in the sound frequency range is the frequency corresponding to the first threshold; correspondingly, in the first frequency variation mode, the maximum frequency in the target frequency range where the switching frequency is located is less than or equal to the target frequency, and the target frequency is the frequency corresponding to the first threshold. The sound frequency range is a low frequency range in the audible frequency range.

It can be seen from the foregoing solution that in the electronic device provided in the sixth embodiment of the present disclosure, when a power supply is used to supply power to an electronic device including a first component that is excited by a voltage signal to generate sound, a switching frequency of the power supply is monitored, and the first component is excited by the voltage signal output by the power supply at the switching frequency to generate noise, so that in response to the switching frequency meeting a first control condition, when the noise generated on the first component at the switching frequency satisfies a certain condition, the power supply is controlled to execute a first frequency change mode, so as to change the switching frequency of the power supply when outputting the voltage signal, thereby improving an influence of the noise generated on the first component on a user, and thus achieving a significant improvement in user experience of the electronic device after noise reduction.

The following takes an example in which the electronic device is a notebook and the first component is a ceramic capacitor, and illustrates the scheme in this embodiment:

in the design of the existing notebook computer, in order to save energy and improve light load efficiency, a DC/DC power converter reduces the switching frequency from hundreds of kHz to kHz with the reduction of load, but when the switching frequency is reduced to below 20kHz, although the purpose of reducing loss at low frequency can be achieved, when the switching frequency enters an audio frequency range which can be perceived by human ears, unpleasant noise of "zi … zi …" is generated, and the use experience of the product is seriously influenced.

Therefore, in this embodiment, the problem of audio noise is solved by dynamically changing the switching frequency of the power supply of the DC/DC power converter under light load operation, and in the specific implementation: when the switching frequency is reduced to be lower than 20kHz, the original fixed switching frequency is not maintained, and the random dynamic switching frequency is changed into the random dynamic switching frequency, so that the switching loss can be effectively reduced, the Energy is saved, the power supply use market is prolonged, the problem of audio noise generated by the switching frequency can be well solved, the use experience of products is improved, and the Energy Star controller is suitable for more and more strict Energy Star specifications.

For example, in the case of the fixed switching frequency operation, since the operation is performed at the fixed switching frequency, the periodic piezoelectric effect of the ceramic capacitor is generated at the fixed switching frequency, such as 20kHz or 20kHz, as shown by the switching frequency signal in fig. 19, and further resonates with the motherboard and the system, so that "zizizi" noise audible to human ears occurs.

In order to solve the above problems, in this embodiment, a dynamic variable switching frequency operating mode is adopted for the power supply, and the switching frequency can be randomly and dynamically adjusted by changing the operating mode of the fixed frequency, for example, when the switching frequency of the power supply is lower than 20kHz, the power supply operates with the dynamic variable switching frequency, as shown in the switching frequency signal in fig. 20, so that resonance generated by the original fixed low frequency is broken, the problem of audio noise is solved, and the use experience of the user on the electronic device is improved.

Referring to fig. 21, a flowchart of an implementation of a control method according to a seventh embodiment of the present disclosure is provided, where the method in this embodiment is applied to an electronic device with a power supply, such as a mobile phone, a pad, or a notebook, where the power supply is instructed by the electronic device to supply power to the electronic device.

Specifically, the method in this embodiment may include the following steps:

step 2101: monitoring information of a change in a voltage required by a second component in the electronic device.

The second component is a component that needs a voltage signal to support to operate in the electronic device, such as a component with computing capability, such as a central Processing unit (cpu), and the like, and the second component notifies the power supply to output its required voltage to the second component by sending a voltage request command, such as an svid (system V Interface description) command, to notify the power supply to output the voltage according to the first variation pattern in a first period of time in the future.

Step 2102: and (4) judging whether the change information meets the first control condition, namely judging whether a first change mode of voltage output of the power supply in a first time period in the future in the voltage output information meets the first control condition, and if so, executing step 2103.

Step 2103: and controlling the power supply to output a voltage signal according to a first output mode.

The first output mode may be an output mode corresponding to the first control condition, that is, the power supply outputs a voltage in a second change mode in a first time period in the future.

In this embodiment, when the change information of the voltage required by the second component meets the first control condition, the control power supply outputs the voltage signal according to the first output mode, and the control voltage signal changes, so that in the first output mode of the power supply, the noise generated by the first component is less than or equal to the noise generated by the first component under the voltage required by the second component, that is, the noise generated by the first component when the voltage signal output by the power supply according to the first output mode is less than or equal to the noise generated by the first component when the voltage signal output by the power supply according to the voltage required by the second component, that is, after the voltage signal is output by the power supply according to the first output mode, the noise generated by the first component in the electronic device is reduced.

As can be seen from the foregoing solution, in the control method disclosed in the seventh embodiment, when the power supply supplies power to the electronic device, the change information of the voltage required by the second component in the electronic device is monitored, and further, when the change information meets the first control condition, the power supply is controlled to output the voltage signal according to the first output mode to supply power to the electronic device, so that in the first output mode, noise generated by the voltage signal output by the power supply of the first component capable of being excited by the voltage signal to generate sound in the electronic device is less than or equal to noise of the first component at the voltage required by the second component, thereby reducing noise. Therefore, in the embodiment, the change information of the voltage required by the second component is monitored, so that the output mode of the power supply is controlled, the noise of the first component is reduced, and the use experience of a user on the electronic equipment is obviously improved after the noise is reduced.

In one implementation, the first variation pattern meets the first control condition, that is, the variation information meets the first control condition, which may include the following cases:

the information on the change of the voltage at which the power supply performs the voltage output in the first period of time indicates that the rate of change of the voltage at which the power supply performs the voltage output in the future first period of time is in the first rate range, that is, the required voltage of the first component changes and the rate of change caused by the required voltage changes is in the first rate range.

In this embodiment, the content represented by the change information, that is, whether the voltage required by the second component changes or not, and whether the voltage change rate caused when the power supply outputs the voltage signal according to the voltage required by the second component is within the first rate range or not, may be obtained by solving the voltage required by the second component in the change information, and then comparing the current voltage with the voltage required by the second component after obtaining the current voltage of the power supply. It should be noted that, when the power supply outputs the voltage signal according to the voltage required by the second component, the output time and the voltage change rate during output may be determined according to the actual running state of the electronic device, such as the load or the power, that is, the voltage change rate is the voltage change rate actually formed by the power supply if outputting the voltage signal according to the voltage required by the second component, and is different from the voltage change rate required by the second component.

Therefore, in the embodiment, it is determined that the change information represents the change of the voltage required by the second component, and the change rate caused by the change of the required voltage is in the first rate range, so that it can be determined that noise may be generated in the electronic device because the first component is excited by a voltage signal output by the power supply according to the voltage required by the second component, and the noise obviously brings a poor use experience to a user.

Therefore, the second variation mode of the voltage output of the power supply in this embodiment, that is, the first output mode according to which the power supply outputs the voltage signal, may specifically be:

the rate of change of the output voltage of the power supply is in a second rate range, which is different from the first rate range, for example, the first rate range includes the second rate range, as shown in fig. 22, or the first rate range and the second rate range do not overlap, as shown in fig. 23, whereby, after the power supply is controlled to output the voltage signal in the second rate range according to the rate of change, the noise generated by the first component excited by the voltage signal output by the power supply in the second rate range according to the rate of change is less than or equal to the noise generated by the first component excited by the voltage signal output by the power supply in the first rate range according to the rate of change, whereby, after the power supply outputs the voltage signal in the first output mode, the rate of change of the voltage at the first component can be significantly changed, thereby changing the instantaneous voltage difference across the first component, the noise generated by the first component in the electronic equipment is reduced, and the use experience of a user is obviously improved.

It should be noted that the second speed range may consist of continuous speed values, or the second speed range may consist of discrete speed values. Similarly, the first speed range may be composed of continuous speed values or discrete speed values.

Further, in this embodiment, the change information of the voltage output by the power supply in the first time period may meet the first control condition, and may be: the change information represents that the voltage required by the second component, that is, the voltage of the power supply for outputting the voltage in the first period of time in the future changes, and the rate of change caused by the voltage change changes dynamically within the first rate range instead of being fixed, because the rate of change caused by the voltage change when the voltage required by the first component is actually output changes dynamically within the first rate range, the voltage signal with the frequent and dynamic change in the rate of change may generate noise with a large intensity or a long duration on the first component, thereby causing a bad experience to the user, and for this reason, the first output mode in this embodiment may be:

the rate of change of the output voltage of the power supply in the first period of time in the future is a fixed value in the second rate range, where the fixed value is, of course, a fixed rate of change value belonging to the second rate range, or alternatively, a fixed rate of change value in the first rate range, as in the relationship between the first rate range and the second rate range in fig. 22, the fixed value may be a fixed value in a region where the first rate range and the second rate range overlap, whereby after controlling the power supply to output the voltage signal at a fixed rate of change in the second rate range, the noise generated by the first component excited by the voltage signal output by the power supply at the fixed rate of change value will be significantly less than or equal to the noise generated by the first component excited by the voltage signal output by the power supply dynamically changing at the rate of change in the first rate range, therefore, after the power supply outputs the voltage signal according to the first output mode, the voltage change rate of the first component is obviously changed and maintained at a fixed value, so that the instantaneous voltage difference of the first component is changed and maintained at a fixed value, and therefore, the noise generated by the first component in the electronic equipment is reduced, and the use experience of a user is obviously improved.

the information on the change in the voltage at which the power supply performs the voltage output during the first period indicates that the rate of decrease in the voltage at which the power supply performs the voltage output during the first period is in the first rate range, that is, the required voltage of the second component decreases and the rate of decrease caused by the required voltage decrease is in the first rate range.

In this embodiment, the content represented by the change information, that is, whether the voltage required by the second component is reduced or not, and whether the voltage reduction rate caused when the power supply outputs the voltage signal according to the voltage required by the second component is in the first rate range or not, may be obtained by reading out the voltage currently required by the second component in the change information, and then comparing the current voltage with the voltage required by the second component after obtaining the current voltage of the power supply. It should be noted that, when the power supply outputs the voltage signal according to the voltage required by the second component, the output time and the voltage reduction rate during output may be determined according to the actual running state of the electronic device, such as the load or the power, that is, the voltage reduction rate is the voltage reduction rate actually formed by the power supply if outputting the voltage signal according to the voltage required by the second component, and is different from the voltage reduction rate required by the second component, and actually, the second component usually does not directly require the voltage reduction rate of the power supply during outputting the required voltage thereof or whether the required voltage thereof reaches at a certain time.

Since it is determined in this embodiment that the variation information represents a decrease in the voltage required by the second component and the rate of decrease caused by the decrease in the required voltage is within the first rate range, it can be determined that noise may be generated in the electronic device due to the first component being excited by a voltage signal output by the power supply according to the voltage required by the second component, and the noise obviously brings a poor user experience to the user.

Therefore, the second variation mode of the power supply for outputting the voltage in the embodiment, that is, the first output mode according to which the power supply outputs the voltage signal, may be:

the rate of decrease of the output voltage of the power supply in the first period of time in the future is in the second rate range, the maximum value of which is less than or equal to the minimum value of the first rate range, as shown in fig. 24. Therefore, after the power supply is controlled to output the voltage signal in the second speed range according to the reduction rate, the noise generated by the second component excited by the voltage signal output by the power supply in the second speed range lower than the first speed range is obviously smaller than or equal to the noise generated by the first component excited by the voltage signal output by the power supply in the first speed range according to the reduction rate, and therefore, after the power supply outputs the voltage signal according to the first output mode, the reduction rate of the voltage drop on the first component can be obviously reduced, the instantaneous voltage difference on the first component is reduced, the noise generated by the first component in the electronic equipment can be reduced, and the use experience of a user is obviously improved.

Further, in this embodiment, the change information of the voltage output by the power supply in the first time period may meet the first control condition, and may be: the variation information represents that the voltage required by the second component, that is, the voltage of the power supply for performing voltage output in the first future time period is reduced, and the reduction rate caused by the voltage reduction is a fixed value in the first rate range, because the fixed value in the first rate range is also a higher voltage drop rate, and the voltage signal with the higher voltage drop rate may generate noise with greater intensity on the first component, thereby causing a poor use experience for a user, for this reason, the first output mode in this embodiment may be:

the rate of decrease of the output voltage of the power supply in the first future time period is a fixed value in the second rate range, and of course, the fixed value is a fixed value in the second rate range, and the rate of decrease of the voltage in the second rate range is definitely smaller than the rate of decrease of the voltage in the first rate range, so that after the power supply is controlled to output the voltage signal at a lower rate of decrease, the rate of decrease of the voltage in the first component is significantly reduced, thereby reducing the instantaneous voltage difference of the first component, so that the noise generated by the first component in the electronic device is reduced, and the user experience is significantly improved.

In one implementation, the second component may be a component having a computing function, such as a CPU or a graphics Processing unit (gpu), and the like, and accordingly, the voltage output information of the power supply may be obtained, specifically, the voltage output information may be obtained by obtaining a voltage request instruction sent by the second component to the power supply, where the voltage request instruction includes voltage output information that the voltage is to be output according to a first change mode in a first future time period, and accordingly, the first change mode meets a first control condition, that is: the change information meets the first control condition, which may be specifically:

the voltage request command indicates: the power supply performs a time period for which the voltage output is dropped and the voltage is not required to drop to the voltage requested by the second component in the voltage request command. For example, the information on the change in the required voltage of the second component indicates that the required voltage of the second component decreases and the second component does not require the period of time for the required voltage to decrease, that is, as long as the required voltage of the second component decreases and the period of time for the voltage drop is not required, it can be determined as: the first variation mode meets a first control condition; alternatively, the information on the change in the required voltage of the second component may indicate that the required voltage of the second component decreases and that the rate of decrease caused by the required voltage decrease is greater than the first threshold and the length of time for which the second component is not required to decrease to the required voltage, that is, only if the required voltage of the second component decreases and the rate of decrease is greater than the first threshold and the length of time for which the voltage drop is not required, may be determined as: the first variation pattern meets a first control condition.

The first threshold may be preset, and may specifically be according to a user requirement, such as a requirement for noise, and the first threshold may be set to be smaller if the user requires lower noise, and may be set to be higher if the user has higher tolerance to noise.

In this embodiment, if the voltage demanded by the second component drops and the rate of drop across the first component is higher relative to the rate at which the power supply drops from the present voltage to the voltage demanded by the second component, then the rate of drop across the first component is also higher, then the higher rate of drop across the first component is excited by the voltage signal which produces more noise, thereby affecting the user experience, for this reason, the power supply may be controlled to output the voltage signal according to the first output mode, that is, the control power supply outputs the voltage signal at a low voltage drop rate, that is, after the control power supply outputs the voltage signal, the rate of pressure drop developed across the second component and the first component is significantly reduced, thereby reducing the instantaneous pressure differential across the first component, and then the noise generated on the first component under the excitation of the voltage signal with the lower voltage drop rate can be obviously reduced, thereby realizing the noise reduction.

In one implementation manner, after step 2101 and before step 2102 in this embodiment, the following steps may also be included, as shown in fig. 25:

step 2104: and collecting the output current of the second component.

Wherein the output current is the current output current of the second component, and is indicative of the current load or current power on the second component.

Step 2105: and judging whether the output current meets a second control condition, if so, executing a step 2102, and if not, no longer executing the output control of the voltage signal of the power supply in the embodiment.

The second control condition may be a condition that the electronic device is in a low power operation, such as a condition that the first component is in a low power operation or a low load operation.

It can be seen that in this embodiment, by monitoring the current operating state of the electronic device or the second component, for example, by collecting the output current of the second component, it is determined whether the second component is in a low-power or low-load operating state, such as a standby mode or a screen-off background downloading state, and if the second component is in a low-power or low-load state, it indicates that the second component does not require the voltage drop rate or whether the voltage drops to a required voltage value within a waveform period or a certain time period, at this time, the voltage drop rate of the voltage signal output by the power supply may be controlled, as shown in fig. 26, after the voltage drop rate is reduced, the voltage may not drop to the required voltage value within a fixed time period, but because the second component is in a low-power or low-load state at this time, the current may not have a great influence on an application or function running on the second component, this makes it possible to greatly reduce the noise generated in the first member.

In addition, if the output current of the second component does not meet the second control condition, it indicates that the electronic device or the second component is not in a low power or low load state, and if the voltage drop rate is reduced, the normal operation of the electronic device or the second component may be adversely affected, and for this reason, the voltage drop rate control of the voltage signal output of the power supply is not performed.

It should be noted that, step 2104 may be executed after step 2101, or may be executed before step 2101, and different technical solutions formed by different execution orders of step 2104 all belong to the inventive concept of the present disclosure, and these technical solutions are all within the scope of the present disclosure as claimed.

In one implementation, after step 2103, the following steps may be further included in this embodiment, as shown in fig. 27:

step 2106: and judging whether the first change mode meets a third control condition, namely judging whether the change information meets the third control condition, if so, executing step 2107.

Wherein the third control condition may be that the desired voltage change of the second component and the rate of change caused by the desired voltage change is in a third rate range, e.g., at a desired voltage reduction of the second component and at a rate of reduction below the first threshold, at a rate of reduction that is frequently dynamically varied, or at a rate of reduction in a third rate range, which may be the same as, similar to, or related to the second rate range, it is thus shown that the rate of change of the voltage at this time does not produce a higher or stronger noise on the first component, which, at this time, under a third control condition, the noise generated on the first component is below a threshold, e.g. the sound intensity of the noise is within an acceptable range, i.e., the sound intensity is below a certain threshold, which may be a fixed value or may be variable, to indicate that the noise on the first component is within the acceptable noise range, at which point step 2107 is performed.

Step 2107: and controlling the power supply to transit from the second change mode to the first change mode for voltage output, for example, controlling the power supply to transit from the first output mode to the second output mode for voltage output.

And the voltage output parameters of the power supply in the second output mode are different from those of the power supply in the first output mode. For example, the power supply outputs the voltage signal in accordance with the voltage required by the second component in the second output mode, and outputs the voltage signal in accordance with the voltage required by the second component whose variation information satisfies the first control condition in the first output mode, whereby the power supply outputs the voltage signal for the second component in accordance with the request of the second component completely without violating the request of the second component in the second output mode, and the noise generated at the first component is not excessively high.

Referring to fig. 28, a schematic structural diagram of a control apparatus according to an eighth embodiment of the present disclosure, the apparatus may be applied to an electronic device having a power supply, such as a mobile phone, a pad, or a notebook, where the power supply is instructed by the electronic device to supply power to the electronic device.

the detector 2801 obtains voltage output information of the power supply, where the voltage output information indicates that the power supply will output a voltage according to a first variation pattern in a first period of time in the future, and specifically, the detector 2801 is used to monitor variation information of a voltage required by a second component of the electronic device when the power supply is used to supply power to the electronic device.

The second component is a component of the electronic device that needs voltage signal support to operate, such as a component with computing capability, such as a central processing unit CPU, and the second component notifies the power supply to output the required voltage to the second component by sending a voltage request command, such as an SVID command, to the power supply.

In the present embodiment, the detector 2801 can obtain the change information of the voltage required by the second component, such as one or more of the change information of the rising and falling, by monitoring and interpreting the SVID command sent by the second component to the power supply, when monitoring the change information of the voltage required by the second component.

The controller 2802 is configured to control the power supply to output the voltage according to the second variation mode in response to the first variation mode meeting the first control condition, and specifically, the controller 2802 controls the power supply to output the voltage signal according to the first output mode in response to the variation information meeting the first control condition.

The first control condition may be a control condition corresponding to the change information, or a preset fixed control condition, and in this embodiment, the controller 2802 determines whether to control the voltage output of the power supply to reduce noise by determining whether the change information meets the first control condition.

The first output mode may be an output mode corresponding to the first control condition.

It should be noted that, in the present embodiment, the first component in the electronic device can be excited by the voltage signal to generate sound, and the intensity or duration of the sound generated by the first component is different because of the different parameters of the voltage signal. In this embodiment, the first component is excited under the voltage signal output by the power supply to generate noise, which may be understood as sound that produces a bad experience for the user.

In this embodiment, the controller 2802 controls the power supply to output the voltage signal according to the first output mode when the change information of the voltage required by the second component meets the first control condition, and further controls the voltage signal to change, so that in the first output mode of the power supply, the noise generated by the first component is less than or equal to the noise generated by the first component under the voltage required by the second component, that is, the noise generated by the first component when excited by the voltage signal output by the power supply according to the first output mode is less than or equal to the noise generated by the first component when excited by the voltage signal output by the power supply according to the voltage required by the second component, that is, after the power supply outputs the voltage signal according to the first output mode, the noise generated by the first component in the electronic device is reduced.

Wherein the meeting of the change information with the first control condition may include:

the change information characterizes a desired voltage change of the second component and a rate of change caused by the desired voltage change is in a first rate range. Accordingly, the first output mode includes:

the rate of change of the output voltage of the power supply is in a second rate range, the second rate range being different from the first rate range. Further, the first output mode is that the rate of change of the output voltage of the power supply is a fixed value in the second rate range.

Alternatively, the compliance of the variation information with the first control condition may include:

the change information characterizes a desired voltage reduction of the second component and a rate of reduction caused by the desired voltage reduction is in a first rate range. Accordingly, the first output mode includes, including:

the rate of decrease of the output voltage of the power supply is in a second rate range, the maximum value of which is less than or equal to the minimum value of the first rate range. Further, the first output mode is such that a rate of decrease of the output voltage of the power supply is a fixed value in the second rate range.

In one implementation, the second component is a component having computing functionality; accordingly, the compliance of the variation information with the first control condition may include:

the change information indicates a desired voltage drop for the second component, a time period for which the desired voltage drop results in a rate of decrease greater than the first threshold and the second component is not required to drop to the desired voltage.

Further, the controller 2802 in this embodiment may also be configured to:

collecting the output current of the second component; if the output current meets the second control condition, responding to that the first change mode meets the first control condition, and controlling the power supply to output voltage according to the second change mode; wherein the second control condition is a condition where the electronic device is in low power operation

Further, the controller 2802 in this embodiment may also be configured to:

in response to the change information meeting a third control condition, controlling the power supply to be switched to the first change mode from the second change mode for voltage output, wherein the voltage output parameter of the power supply in the second change mode is different from that in the first change mode; and the third control condition is that the voltage change of the voltage output of the power supply in the first time period is required voltage change of the second component, and the change rate caused by the required voltage change is in a third rate range, and under the third control condition, the sound intensity of the noise is lower than the threshold value.

It can be known from the foregoing solution that, in the control device disclosed in the eighth embodiment, when the power supply supplies power to the electronic device, the change information of the voltage required by the first component in the electronic device is monitored, and then, under the condition that the change information meets the first control condition, the power supply is controlled to output the voltage signal according to the first output mode to supply power to the electronic device, so that in the first output mode, noise generated by the voltage signal output by the power supply of the second component capable of being excited by the voltage signal to generate sound in the electronic device is less than or equal to noise of the second component at the voltage required by the first component, thereby reducing noise. Therefore, in the embodiment, the change information of the voltage required by the first component is monitored, so that the output mode of the power supply is controlled, the noise of the second component is reduced, and the use experience of a user on the electronic equipment is obviously improved after the noise is reduced.

Referring to fig. 29, a schematic structural diagram of an electronic device according to a ninth embodiment of the present disclosure is shown, where the electronic device may be a mobile phone, a pad, or a notebook.

In this embodiment, the electronic device may include the following structure:

first component 2901, first component 2901 is capable of being excited by a voltage signal to produce sound, such as a ceramic capacitor.

The second component 2902 may be a component with computing power, such as a CPU or GPU.

A power source 2903 for providing power to the electronic device.

A processor 2904 for executing applications to perform the following functions: the processor 2904 is configured to monitor the variation information of the voltage required by the second component 2902, and in response to the variation information meeting the first control condition, control the power supply to output the voltage signal according to the first output mode. The application program may be software or code preset in a memory, and the processor 2904 includes a kernel, and the kernel calls and runs the application program in the memory to implement corresponding functions. The memory may include volatile memory in a computer readable medium, Random Access Memory (RAM) and/or nonvolatile memory such as Read Only Memory (ROM) or flash memory (flash RAM), and the memory includes at least one memory chip.

Second component 2902 sends a voltage request command, such as an SVID command, to power source 2903 to notify power source 2903 to output the required voltage to second component 2902. In this embodiment, when monitoring the variation information of the voltage required by the second component 2902, the processor 2904 may obtain the variation information of the voltage required by the second component 2902, such as one or more of the variation information of rising and falling, by monitoring and interpreting the SVID command sent by the second component 2902 to the power source 2903.

It is noted that the processor 2904 may be the same component as the second component 2902, such as a CPU, which provides computing power and may also implement the functions of the processor 2904.

The first control condition may be a control condition corresponding to the variation information, or a preset fixed control condition, and in this embodiment, the processor 2904 determines whether to control the voltage output of the power source 2903 to reduce noise by determining whether the variation information meets the first control condition.

Note that, in this embodiment, the intensity or the duration of the sound generated by the first component 2901 is different due to the different parameters of the voltage signal. In this embodiment, first component 2901 is excited under the voltage signal output by power source 2903 to produce noise, which may be understood as a sound that produces a bad experience for the user.

In this embodiment, when the variation information of the voltage required by the second component 2902 meets the first control condition, the processor 2904 controls the power source 2903 to output the voltage signal according to the first output mode, and further controls the voltage signal to vary, so that in the first output mode of the power source 2903, the noise generated by the first component 2901 is less than or equal to the noise generated by the first component 2901 under the voltage required by the second component 2902, that is, the noise generated by the first component 2901 excited by the voltage signal output by the power source 2903 according to the first output mode is less than or equal to the noise generated by the first component 2901 excited by the voltage signal output by the power source 2903 according to the voltage required by the second component 2902, that is, after the power source 2903 outputs the voltage signal according to the first output mode, the noise generated by the first component 2901 in the electronic device is reduced.

the change information characterizes a desired voltage change of the second component 2902 and a rate of change caused by the desired voltage change is in a first rate range. Accordingly, the first output mode includes:

the rate of change of the output voltage of the power supply 2903 is in a second rate range that is different from the first rate range. Further, the first output mode is that the rate of change of the output voltage of the power source 2903 is a fixed value in the second rate range.

the change information characterizes a desired voltage reduction of second component 2902 and a rate of reduction caused by the desired voltage reduction is in a first rate range. Accordingly, the first output mode includes, including:

the rate of decrease of the output voltage of the power source 2903 is in a second rate range, the maximum value of which is less than or equal to the minimum value of the first rate range. Further, the first output mode is such that the rate of decrease of the output voltage of the power source 2903 is a fixed value in the second rate range.

In one implementation, second component 2902 is a component with computing functionality; accordingly, the compliance of the variation information with the first control condition may include:

the change information indicates a desired voltage drop for the second component 2902, a length of time for which the desired voltage drop results in a rate of decrease greater than a first threshold and the first component does not require a drop to the desired voltage.

Further, in this embodiment, the processor 2904 may be further configured to:

collecting an output current of the second component 2902; if the output current satisfies the second control condition, controlling the power source 2903 to output a voltage in the first output mode in response to the variation information satisfying the first control condition; wherein the second control condition is a condition where the electronic device is in low power operation

Further, in this embodiment, the processor 2904 may be further configured to:

in response to the variation information meeting a third control condition, controlling the power supply 2903 to transition from the first output mode to a second output mode to output a voltage signal, the power supply 2903 in the second output mode differing from a voltage output parameter in the first output mode; where the third control condition is a desired voltage change of the second component 2902 and a rate of change resulting from the desired voltage change is in a third rate range, and where the noise is below a threshold, e.g., where the sound intensity of the noise is within an acceptable range.

As can be seen from the foregoing solution, in the electronic device disclosed in the ninth embodiment, when the power supply supplies power to the electronic device, the change information of the voltage required by the first component in the electronic device is monitored, and further, when the change information meets the first control condition, the power supply is controlled to output the voltage signal according to the first output mode to supply power to the electronic device, so that in the first output mode, noise generated by the voltage signal output by the power supply of the first component capable of being excited by the voltage signal to generate sound in the electronic device is less than or equal to noise of the first component at the voltage required by the second component, thereby reducing noise. Therefore, in the embodiment, the change information of the voltage required by the second component is monitored, so that the output mode of the power supply is controlled, the noise of the first component is reduced, and the use experience of a user on the electronic equipment is obviously improved after the noise is reduced.

The following takes the electronic device as a notebook, the first component as a ceramic capacitor, and the second component as a CPU as an example, and illustrates the scheme in this embodiment:

in the existing notebook computer, when the system is in idle mode, i.e. standby mode, the piezoelectric effect is caused by ceramic capacitor and the like due to the constantly changing voltage output of the CPU, as shown in fig. 30, the ceramic capacitor or resistor device vibrates up and down (2) and left and right (1) under the constantly changing voltage output, so that a person causes a resonance phenomenon to generate obvious audio noise, thereby bringing about poor use experience to the user.

In this embodiment, whether the CPU is in a voltage drop state and whether the voltage drop rate exceeds a certain threshold is determined by monitoring a setVID _ decay command in the SVID of the CPU, and if so, the voltage drop rate is reduced by activating a slow attenuation mode, that is, setting a fixed and small slew rate, so as to reduce the voltage difference between two ends of components such as a ceramic capacitor, thereby reducing the vibration amplitude of the ceramic capacitor, further reducing the resonance amplitude of the entire motherboard, and achieving a great reduction in the sound intensity level of audio noise.

As shown in fig. 31, the implementation in this embodiment is as follows:

1. the CPU starts working, sends an SVID instruction and outputs the SVID instruction to the power supply required voltage;

2. the power supply chip receives and interprets the SVID instruction;

3. the power supply chip judges whether the SVID instruction is setVID _ decade, namely whether the SVID instruction is in a voltage drop state, if so, the step 4 is executed, otherwise, the step 5 is executed;

4. activating a slow attenuation mode by the power chip, simultaneously detecting the output current value of the CPU, and executing the step 6;

5. the power supply chip does not activate the slow attenuation mode, continues to output a voltage signal to the CPU according to the SVID instruction, and ends the scheme;

6. detecting whether the output current of the CPU is larger than a certain threshold value, if so, executing a step 7, otherwise, executing a step 8;

7. the power chip sets the slew rate, i.e. the pressure drop rate, in the slow attenuation mode to be a fixed value, for example, rate is 0.00625mV/us, and the scheme is ended;

8. and the power supply chip maintains the default slew rate, namely the voltage drop rate, and the scheme is ended.

Specifically, as shown in fig. 32, in this embodiment, when the voltage required by the CPU is reduced from 1.95v to 1.6v, the voltage drop rate of 350mv is relatively high, which results in a situation that the resonance noise of the ceramic capacitor is relatively large, at this time, the power supply chip in this embodiment controls the slew rate of the voltage signal output to the CPU, that is, the voltage drop is set to 28mv, so that the voltage drop rate is significantly reduced, the voltage difference across the ceramic capacitor is reduced, and the noise generated by the resonance of the ceramic capacitor is significantly reduced.

Referring to fig. 33, a flowchart of an implementation of a control method provided in this disclosure is applied to an electronic device having a power supply, where the electronic device includes a first component that generates sound when excited by a voltage, such as a ceramic capacitor, and the first component may generate noise when excited by a voltage signal output by the power supply.

In this embodiment, information that the power supply will output a voltage according to the first variation pattern in the first period of time in the future is first obtained and is determined, and when the first variation pattern in the information meets the first control condition, the steps shown in fig. 33 are executed.

Wherein, the first variation mode may be: the voltage signal has a pattern of first falling timings within a waveform period thereof when the power supply performs voltage output for a first period of time, and the first falling timings cause the voltage signal to generate noise on the first component. Accordingly, the first control condition may be: the noise generated by the voltage signal on the first component at the first falling time is made higher than the threshold value, and thus, the first variation pattern is found to meet the first control condition in the present embodiment, at which time, the scheme as shown in fig. 33 is executed in the present embodiment. The following were used:

step 3301: a target falling time of a voltage signal output by a power supply in an electronic device within a waveform period thereof is obtained.

The voltage signal provided by the power supply in the electronic device to the electronic device is usually a direct current, and on a microscopic level, the direct current is transmitted at a certain frequency, such as 600k or one of 300k to 900k, and the voltage effective amplitude value is still a fixed value, such as 1 v. Therefore, when the power supply provides the voltage signal to the electronic device, the voltage signal may generate noise on the electronic device.

It is understood that the waveform period in this embodiment is a waveform period of a signal waveform of the voltage signal during transmission, and as shown in fig. 34, the voltage signal is converted in a sawtooth wave, a triangular wave, or other types of waveforms (the waveform is above the X axis) in each waveform period, so as to be transmitted to the electronic device, and power is supplied to the electronic device. Accordingly, the falling time of the voltage signal is the time when the amplitude of the voltage signal in the waveform period of the voltage signal falls.

Step 3302: and controlling the power supply to output a voltage signal for supplying power based on the target falling time.

The target falling time is a time when noise generated by the voltage signal in the electronic device, specifically the first component, is smaller than a threshold value, that is: when the voltage signal is transmitted to the electronic device, the signal amplitude of the voltage signal decreases at the target falling time on each waveform period, and then the noise excited by the voltage signal on the electronic device to the first component which generates the sound by voltage excitation is lower than the threshold value.

Further, in this embodiment, the target falling time may be adjusted multiple times to determine that the final target falling time is the time at which the noise generated by the voltage signal in the first component is minimized, so as to reduce the noise of the electronic device to the minimum.

As can be seen from the foregoing solution, in the control method provided in the tenth embodiment of the present disclosure, the falling time of the voltage signal output to the electronic device in the waveform period is obtained, and then the target falling time of the voltage signal in the waveform period is obtained, so that when power is supplied, the voltage signal falls at the target falling time in the waveform period, and noise generated by the voltage signal on the electronic device can be lower than a threshold. It can be seen that, in the embodiment, the falling time of the voltage signal output by the power supply to the electronic device in the waveform period is controlled to reduce the noise generated by the voltage signal in the electronic device, without changing the vibration period and frequency of the power supply or affecting the output efficiency of the power supply, thereby reliably and effectively reducing the noise of the electronic device.

In one implementation, when obtaining the target falling time of the voltage signal output by the power supply in the waveform period of the voltage signal, the embodiment may specifically be implemented by:

first, a signal rising function and a signal falling function corresponding to the electrical signal when the first electronic component is turned on at least one start time within the waveform period are obtained.

Here, the first electronic component refers to a component provided in a power supply, such as a transistor, and when the first electronic component is turned on, an electric signal starts to fall, such as a bridge transistor. That is, in the circuit configuration of the power supply, there is a first electronic component having an on timing at which an electric signal output through the first electronic component starts to fall. In addition, the power supply includes a second electronic component having an on-time, and an electric signal output through the second electronic component starts to rise at the on-time, as in the case of the bridge transistor. It should be noted that the on states of the first electronic component and the second electronic component are mutually exclusive, that is, when the first electronic component is on, the second electronic component is off, the second electronic component is on, and the first electronic component is off. In the same waveform period, the second electronic component is turned off at the moment when the first electronic component is turned on.

It is understood that the first electronic component has a plurality of start-up times within the waveform period, as shown in fig. 35, each time point within the waveform period can be used as the start-up time of the first electronic component, and the start-up time of the first electronic component is determined after the start-up to the end of the waveform period. As shown in fig. 36, when the first electronic component is turned on at time T1, the electric signal passing through the first electronic component has a signal rising function a1(x) and a signal falling function F1(x), and when the first electronic component is turned on at time T2, the electric signal passing through the first electronic component has a signal rising function a2(x) and a signal falling function F2(x), and so on, during which the effective value and the maximum amplitude value of the voltage of the electric signal may or may not change.

Then, a target start-up timing of the first electronic component within the waveform period is obtained as a target falling timing of the electric signal within the waveform period thereof based on at least the signal rising function and the signal falling function.

It should be noted that the signal rising functions of the electrical signals when the first electronic component is turned on at any time may be the same (the second electronic component is fixed at the start time of the bridge transistor as described above), that is, a1(x) and a2(x) are the same (or different) and may be represented by a1(x), while the signal falling functions of the electrical signals when the first electronic component is turned on at different times are different. That is, the starting time of the first electronic component, that is, the closing time of the second electronic component, is different, and the voltage effective value of the electrical signal is always fixed, for example, 1v, so that, in the case where the duration of the waveform period is fixed, the duration of the on state of the first electronic component is different because the on time of the first electronic component is different, and the longer the duration is, the longer the electrical signal is in the voltage drop state, and thus, the longer the duration of the noise generated by the first component excited by the voltage in the electronic apparatus and the electronic apparatus is, and the later the on time of the first electronic component is, although the duration of the noise generation is reduced, the higher the voltage drop rate of the electrical signal in the voltage drop state is, and the greater the intensity of the noise generated by the electronic apparatus is.

Then, in order to find a balance point between the noise duration and the noise intensity, that is, find a target falling time of the first electronic device, so that the noise duration generated by the electronic device is short and the noise intensity is small, that is, find that the energy consumed by the electrical signal when passing through the circuit (the energy difference between the two ends of the first component which generates sound when being excited by the voltage) is reduced, in this embodiment, when obtaining the target starting time of the first electronic component in the waveform period based on the signal rising function and the signal falling function, specifically, the following method may be implemented:

obtaining the waveform area formed by the signal rising function and the signal falling function corresponding to the starting time of the first electronic component in the waveform period, as shown in fig. 37, the waveform areas formed between the signal rising function and the signal falling function and the preset coordinate axes, such as the X-axis, after that, the starting time corresponding to the smaller waveform area can be determined as the target starting time, that is, at the target starting time, the first electronic component is turned on, the waveform areas formed by the signal rising function and the signal falling function of the electric signal are small, correspondingly, the energy consumed by the electric signal when passing through the circuit is small, the energy difference between two ends of the first component which is excited by the voltage to generate the sound in the electronic equipment is small, the amplitude of two ends of the first component is small, thus, noise generated when a voltage signal passes through the electronic device can be reduced below a threshold value.

In one implementation, when the power supply output voltage signal is controlled to supply power based on the target falling time, the embodiment may specifically be implemented by:

and controlling the power supply to output a voltage signal by taking the target falling time as the starting time of the first electronic component in the power supply in the waveform period.

That is, in the embodiment, when the control power supply outputs the voltage signal, the starting time of the first electronic component in the control power supply in the waveform period of the voltage signal is the target falling time, as shown in fig. 38, so that the noise generated in the electronic device by the voltage signal output by the power supply in a complete waveform period is lower than the threshold, that is: the amplitude of a part in the electronic equipment, which is excited by voltage to generate sound, is reduced by smaller energy difference between two ends in a complete waveform period, so that the noise generated by the whole electronic equipment is reduced, and the noise is effectively reduced.

based on the target falling time, the power supply is controlled to output a voltage signal to the second component.

The second component may be a device having a data Processing function in the electronic device, such as running an application or executing a command, for example, a central Processing unit (cpu) in the electronic device.

Accordingly, the noise generated by the voltage signal in the electronic device may be below the threshold:

in the process of passing a voltage signal through a first component to a second component in the electronic equipment, noise generated by the first component is lower than a threshold value.

The threshold may be a preset noise threshold or a variable noise threshold, the setting of the threshold is determined according to the state of the user capable of receiving noise, and if the user is sensitive to noise, a lower threshold may be set, so as to reduce noise to the threshold through the embodiment, thereby achieving the purpose of improving the user experience. The first component may be a device which may generate sound when excited by a voltage, such as a ceramic capacitor. That is, when the power supply outputs a voltage signal to a second component such as a CPU, the voltage signal may cause the ceramic capacitor to resonate when reaching the CPU through the ceramic capacitor, and the amplitude is large, and thus, large noise is generated.

Referring to fig. 39, a schematic structural diagram of a control device according to an eleventh embodiment of the disclosure is provided, where the control device is applied to a power supply, the power supply supplies power to an electronic device, and the electronic device includes a first component that generates sound when excited by a voltage, such as a ceramic capacitor, and the first component may generate noise when excited by a voltage signal output by the power supply.

In this embodiment, the apparatus first obtains information that the power supply will perform voltage output in accordance with the first variation pattern in the first period of time in the future, and determines the information, and when the first variation pattern in the information meets the first control condition, the configuration shown in fig. 39 is operated.

Wherein, the first variation mode may be: the voltage signal has a pattern of first falling timings within a waveform period thereof when the power supply performs voltage output for a first period of time, and the first falling timings cause the voltage signal to generate noise on the first component. Accordingly, the first control condition may be: the noise generated by the voltage signal on the first component at the first falling time is made higher than the threshold value, and thus, the first variation pattern is found to meet the first control condition in this embodiment, and at this time, the scheme shown in fig. 39 is operated in this embodiment. The following were used:

a timing obtaining unit 3901 configured to obtain a target falling timing of a voltage signal output by a power supply of the electronic device within a waveform period thereof.

Specifically, the time obtaining unit 3901 may be implemented by:

firstly, obtaining a signal rising function and a signal falling function corresponding to an electric signal when a first electronic component is started at least one starting moment in a waveform period;

secondly, a target starting time of the first electronic component in the waveform period is obtained as a target falling time of the electric signal in the waveform period based on at least the signal falling function and the signal rising function, for example, a waveform area formed by the signal rising function and the signal falling function, such as a waveform area formed between the signal rising function and the signal falling function and a preset coordinate axis, corresponding to the starting time of the first electronic component in the waveform period is obtained, and thus the starting time corresponding to the smaller or smallest waveform area is determined as the target starting time.

An output control unit 3902 configured to control the power supply to output a voltage signal for supplying power based on a target falling time; wherein the target falling time is such that the noise generated by the voltage signal in the electronic equipment is lower than the threshold value, the electronic equipment comprises a component which generates sound by voltage excitation, and the noise is generated by the component which generates sound by voltage excitation and is excited by the voltage signal.

Wherein, the target falling time is the time when the noise generated by the voltage signal in the electronic device is lower than the threshold value, namely: when the voltage signal is transmitted to the electronic device, the signal amplitude of the voltage signal decreases at the target falling time on each waveform period, and then the noise excited by the voltage signal on the electronic device to the first component which generates the sound by voltage excitation is lower than the threshold value.

Further, the control device in this embodiment may adjust the target falling time multiple times to determine that the final target falling time is a time at which noise generated by the voltage signal in the first component is minimized, thereby minimizing noise reduction of the electronic device.

Specifically, the output control unit 3902 may be specifically implemented by:

and controlling the power supply to output a voltage signal to the second component by taking the target falling time as the starting time of the first electronic component in the power supply in the waveform period. The second component is a device having a data processing function, such as a CPU or the like.

The noise generated by the voltage signal in the electronic device is lower than the threshold, which may be:

in the process that the voltage signal passes through a first component to a second component in the electronic equipment, noise generated by the first component is lower than a threshold value.

As can be seen from the above description, in the control device according to the eleventh aspect of the present disclosure, by obtaining the falling time of the voltage signal output to the electronic device in the waveform period thereof and further obtaining the target falling time of the voltage signal in the waveform period thereof, when power is supplied, the voltage signal falls at the target falling time in the waveform period thereof, so that the noise generated by the voltage signal on the electronic device can be lower than the threshold. It can be seen that, in the embodiment, the falling time of the voltage signal output by the power supply to the electronic device in the waveform period is controlled to reduce the noise generated by the voltage signal in the electronic device, without changing the vibration period and frequency of the power supply or affecting the output efficiency of the power supply, thereby reliably and effectively reducing the noise of the electronic device.

Referring to fig. 40, a schematic structural diagram of an electronic device according to a twelfth embodiment of the present disclosure, the electronic device may include the following structure:

the first member 4001 which generates sound is excited by a voltage.

The first member 4001 may be a member that generates sound when excited by a voltage, such as a ceramic capacitor.

And a power supply 4002 for outputting a voltage signal.

Specifically, after the power supply 4002 receives a voltage request command generated by the electronic device, such as an svid (system V Interface description) command that a second component, e.g., a CPU, requests the power supply 4002 to output a certain voltage value, the power supply 4002 outputs a corresponding voltage signal to the CPU.

The voltage signal is usually a direct current, and at a microscopic level, the direct current is transmitted at a certain frequency, such as 600k or one of 300k to 400k, and the voltage effective amplitude value is still a fixed value, such as 1 v. Therefore, when the power supply 4002 supplies a voltage signal to the electronic device, the voltage signal may generate noise on the electronic device.

And a comparator 4003 configured to acquire voltage output information of the power supply 4002, the voltage output information indicating that the power supply 4002 will perform voltage output in a first variation pattern in a first period of time in the future, and control the power supply 4002 to perform voltage output in a second variation pattern in response to the first variation pattern conforming to a first control condition, wherein a first noise generated by the electronic device in the first variation pattern is greater than or equal to a second noise generated by the electronic device in the second variation pattern, and specifically, the comparator 4003 obtains a target falling timing of the voltage signal output by the power supply 4002 in a waveform period thereof in response to the first variation pattern conforming to the first control condition.

The power supply controller 4004 is used for controlling the power supply 4002 to output a voltage signal to supply power based on the target falling time; wherein the target falling time is such that the voltage signal generates the smallest noise in the electronic apparatus, the noise being generated by the first part 4001 which generates sound by voltage excitation being excited by the voltage signal.

The target falling time is a time at which noise generated by the voltage signal in the electronic device is minimized, that is: when the voltage signal is transmitted to the electronic device, the signal amplitude of the voltage signal decreases at the target falling time on each waveform period, and then the noise excited by the voltage signal on the electronic device to the voltage-excited sound-generating component is minimum.

As can be seen from the above, in the electronic device according to the twelfth embodiment of the present disclosure, the falling time of the voltage signal output to the electronic device in the waveform period is obtained, and then the target falling time of the voltage signal in the waveform period is obtained, so that when power is supplied, the voltage signal falls at the target falling time in the waveform period, and noise generated by the voltage signal on the electronic device can be minimized. It can be seen that, in the embodiment, the falling time of the voltage signal output by the power supply to the electronic device in the waveform period is controlled to minimize the noise generated by the voltage signal in the electronic device, without changing the vibration period and frequency of the power supply or affecting the output efficiency of the power supply, thereby reliably and effectively reducing the noise of the electronic device.

In a particular implementation, the power supply 4002 may include at least the following structure, as shown in fig. 41:

a first electronic component 4021, an electric signal on the first electronic component 4021 starts to fall when the first electronic component 4021 is turned on;

and the comparator 4003 obtains the target falling time may be implemented as follows:

firstly, a signal rising function and a signal falling function corresponding to an electric signal when the first electronic component 4021 is started at least one starting moment in a waveform period are obtained;

next, based on at least the signal falling function and the signal rising function, a target start time of the first electronic component 4021 in the waveform period is obtained as a target falling time of the electrical signal in the waveform period thereof, for example, a waveform area formed by the signal rising function and the signal falling function, such as a waveform area formed between the signal rising function and the signal falling function, and a preset coordinate axis, corresponding to the start time of the first electronic component 4021 in the waveform period is obtained, and thus the start time corresponding to the minimum waveform area is determined as the target start time.

The power controller 4004 is specifically configured to trigger the first electronic component 4021 to set a target falling time as a start time in a waveform period.

Specifically, the electronic device may further include the following structure, as shown in fig. 42:

the second block 4005, the second block 4005 may be a device having a data processing function, such as a CPU, and the second block 4005 may request the power supply 4002 to output a voltage signal for issuing an SVID instruction to the power supply 4002.

Accordingly, the power controller 4004 may be implemented as follows:

with the target falling timing as the turn-on timing of the first electronic component 4021 in the power supply 4002 in the waveform period, the power supply 4002 is controlled to output a voltage signal to the second component 4005.

The noise generated by the voltage signal in the electronic device is minimal, and it can be understood that:

in the process of a voltage signal passing through the device 4001 in an electronic apparatus to the second part 4005, noise generated by the device 4001 is minimized.

The following takes an electronic device as a notebook, a second component as a CPU, a device excited by a voltage to generate a sound as a ceramic capacitor, and a first electronic device as a bottom-bridge transistor as an example, and illustrates the scheme in the embodiment of the present disclosure:

when the power supply chip works normally, the following assumptions are made: as shown in the voltage signal in fig. 43, the function a1(x) is a fixed function, i.e., the variable is the on-time T1(on) of the upper bridge transistor, e.g., MOSFET, so that the duty ratio D1 is T1(on) Fsw, the on-time of the lower bridge transistor, e.g., MOSFET, is T-T1, and the function is F1 (x). Therefore, in a complete period T, the energy of the positive and negative ends of the ceramic capacitor is converted into: Δ E1 ═ a1(x) + F1 (x);

the on-time of the upper bridge MOSFET is changed to T2(on), so the duty ratio D2 is T2(on) × Fsw, and the on-time of the lower bridge MOSFET is T-T2, and the function is F2 (x). Therefore, in a complete period T, the energy of the positive and negative ends of the ceramic capacitor is converted into: Δ E2 ═ a1(x) + F2(x), and so on.

And then repeatedly comparing the delta E1 and the delta E2 … … delta En to find out the minimum value, namely the minimum amplitude point of the ceramic capacitor, thereby determining the duty ratio corresponding to the minimum value of the lower bridge transistor, further controlling the lower bridge MOSFET to be opened at the opening time corresponding to the duty ratio, and controlling the upper bridge transistor to be closed at the opening time, and further minimizing the noise generated when the power supply outputs a voltage signal to the CPU.

The implementation flow of the specific scheme refers to the flow shown in fig. 44 and fig. 45:

1. the power supply chip starts to work and sends a command to modify the starting duration of the upper bridge transistor;

2. the upper bridge transistor and lower bridge transistor discharge control circuit receives the instruction and modifies the opening time T1 of the upper bridge transistor;

3. the power chip calculates functions A1(x) and F1(x) under the condition of T1 and sends the functions A1(x) and F1(x) to the comparator;

4. the comparator calculates that the value of delta E1 is A1(x) + F1(x), judges whether the value is the minimum value, if the value is the minimum value, 5 is executed, and if the value is not the minimum value, 6 is executed;

5. the comparator feeds back the value delta E1 to the power supply chip, locks T1 and fixes T1, namely fixes the starting time of the lower bridge transistor;

6. the comparator sends a command to the power supply chip to continue sending a command of modifying T1, returns to 1, and continues to calculate the on-time of the upper bridge transistor corresponding to the minimum value of delta E until the minimum value of delta En is found, which corresponds to the on-time of the lower bridge transistor.

Referring to fig. 46, a flowchart of an implementation of a control method provided in a thirteenth embodiment of the present disclosure is applicable to an electronic device with a power supply to control noise generated by the electronic device.

Specifically, the method in this embodiment may include the following steps:

step 4601: acquiring a voltage request instruction of the electronic equipment.

The voltage request command at least includes voltage output information that the power supply will output voltage according to a first change pattern in a future first time period, and specifically, the first change pattern in the voltage output information includes a voltage drop parameter requested by the electronic device. For example, in order to run an application or enter a working mode, the electronic device needs the power supply to output a corresponding voltage to support the running of the application or the working mode, and at this time, the electronic device generates a voltage request instruction to notify the power supply to know the current required voltage of the electronic device, such as boosting the voltage to a certain value or reducing the voltage to a certain value, and then boosting the voltage to a certain value or reducing the voltage to a certain value within a certain time period, and so on, i.e., a voltage drop parameter.

The voltage request command may be a command generated by a Central Processing Unit (CPU) in the electronic device, such as an svid (system V Interface description) command, for notifying the power supply to output the required voltage to the CPU.

Step 4602: and judging whether the pressure drop parameters meet the control conditions corresponding to the pressure drop parameters, if so, executing the step 4603, and if not, executing the step 4604.

In this embodiment, it may be determined whether the first variation mode meets the first control condition by determining whether the voltage drop parameter meets the corresponding control condition, for example, performing condition determination on a voltage required by the electronic device in the voltage drop parameter, so as to determine whether to perform step 4603.

Step 4603: and after delaying the first time length, carrying out voltage reduction processing on the output voltage signal of the power supply.

In this embodiment, when it is determined that the first variation mode meets the first control condition, that is, the voltage drop parameter meets the corresponding control condition, the power supply is controlled to output voltage according to the second variation mode in a first time period in the future, that is, the voltage drop processing is performed on the output voltage signal of the power supply after the first time period is delayed. Specifically, the first duration can be set according to user requirements, for example, the user needs to be completely muted, and then the setting duration is relatively long, so that the time for holding the low voltage after voltage drop is reduced, and therefore, when an output voltage signal of the power supply passes through each component on the electronic device, such as a ceramic capacitor on a motherboard, the duration for which the low voltage causes too high voltage difference at two ends of the ceramic capacitor after voltage drop can be reduced, so that the duration of noise generated by the ceramic capacitor is reduced, and therefore, the duration for generating the noise due to the voltage drop is reduced. Of course, the first duration may also be adaptively determined in other manners, for example, automatically set according to the actual system operating condition and the sensitivity of the user to noise, and certainly, the method also includes setting the first duration more individually and reasonably by using the technologies such as artificial intelligence and big data.

Step 4604: and immediately carrying out voltage reduction processing on the output voltage signal of the power supply.

In this embodiment, when it is determined that the first variation mode does not meet the first control condition, that is, the voltage drop parameter does not meet the corresponding control condition, the power supply is controlled to continue to output the voltage according to the first variation mode within a first time period in the future, that is, the output voltage signal of the power supply is immediately subjected to voltage reduction processing without delaying for a first time period. Specifically, "immediately" in the present embodiment means that the voltage drop processing is immediately performed on the output voltage signal of the power supply at the voltage drop time requested in the voltage request command. Correspondingly, after delaying the first time length, the step-down processing is performed on the output voltage signal of the power supply, which means that the step-down processing is performed on the output voltage signal of the power supply at a time delayed by the first time length at the voltage drop time requested in the voltage request instruction.

According to the above scheme, after the voltage request instruction of the electronic device is obtained, whether the voltage drop parameter requested by the electronic device in the voltage request instruction meets the corresponding control condition is identified, and when the voltage drop parameter meets the corresponding control condition, voltage drop processing is performed on the output voltage signal of the power supply after delaying the first time length.

It should be noted that, in this embodiment, when performing voltage reduction processing on the output voltage signal of the power supply after delaying the first time period, when performing voltage reduction processing on the voltage signal by the power supply, voltage reduction processing may be performed at a voltage drop rate before delaying the first time period, or voltage reduction processing may be performed at a voltage drop rate lower than before delaying the first time period, so that the noise existence time period is reduced, and the noise intensity is reduced. Of course, in this embodiment, after the first time period is delayed, when the power supply performs voltage reduction processing on the voltage signal, the voltage reduction processing may be performed at a higher voltage reduction rate than before the first time period is delayed, so as to reach the voltage indicated in the voltage request command as soon as possible.

In one implementation, the pressure drop parameter meets a control condition corresponding to the pressure drop parameter, which may specifically be:

the magnitude relation among the target voltage value in the voltage drop parameter, the current voltage value of the power supply and a first reference value corresponding to the current voltage value meets the control condition.

The target voltage value refers to a target value of voltage drop required by the electronic equipment in the voltage drop parameter, the current voltage value refers to a current value of a voltage signal output by the power supply to the electronic equipment, and the first reference value is a preset standard value corresponding to the current voltage value. In this embodiment, when the magnitude relationship between the three satisfies the control condition, the first time period is delayed to perform voltage reduction processing on the output voltage signal of the power supply.

Specifically, when the first reference value is between the current voltage value and the target voltage value, that is, the current voltage value is greater than the first reference value, the first reference value is greater than the target voltage value, and the magnitude relationship of the current voltage value, the target voltage value and the first reference value satisfies the control condition, the output voltage signal of the power supply is subjected to voltage reduction processing by delaying a first duration.

It should be noted that, the first reference value corresponds to the current voltage value, and it can be understood that: the step-down amplitude of the voltage reduced from the current voltage value to the first reference value has a small influence on the noise generated by the electronic device, for example, the noise generated by the electronic device is not caused or is negligible, so that a poor use experience is not generated for a user, while the step-down amplitude of the voltage reduced from the current voltage value to the voltage below the first reference value has a large influence on the noise generated by the electronic device, for example, resonance of each component of the electronic device is caused, the noise is large, and the poor use experience is generated for the user.

For example, the current voltage value of the voltage signal output by the power supply to the electronic device is 1v, the corresponding preset first reference value is 0.7v, and if the target voltage value required by the electronic device is 0.5v, the first reference value 0.7v is between the current voltage value 1v and the target voltage value 0.5v, at this time, the magnitude relationship between the three satisfies the control condition, at this time, the voltage reduction processing can be performed on the output voltage signal of the power supply after delaying the first time length, for example, 0.8 seconds, so that the voltage reduction time length from the beginning of voltage reduction to the completion of voltage reduction is obviously reduced, thereby reducing the time length of noise caused by immediately reducing the voltage from 1v to 0.5v, and further reducing the noise, as shown in fig. 47;

or, for another example, if the current voltage value of the voltage signal output by the power supply to the electronic device is 1v, and the corresponding preset first reference value is 0.7v, and if the target voltage value required by the electronic device is 0.8v, the first reference value 0.7v is not between the current voltage value 1v and the target voltage value 0.8v, at this time, the magnitude relation between the three does not satisfy the control condition, and at this time, the output voltage signal of the power supply is directly subjected to voltage reduction processing without delay.

the magnitude relation between the voltage difference between the target voltage value in the voltage drop parameter and the current voltage value of the power supply and the target voltage difference corresponding to the current voltage value meets the control condition.

The voltage difference between the target voltage value and the current voltage value of the power supply in the voltage drop parameter refers to a voltage drop amplitude from the current voltage value of the power supply to a voltage value required by the electronic device. The target voltage difference corresponding to the current voltage value is the voltage drop amplitude which has the smallest influence on the noise generated by the electronic equipment for the current voltage value.

Specifically, the voltage difference between the target voltage value and the current voltage value is greater than the target voltage difference corresponding to the current voltage value, and at this time, the voltage reduction processing is performed on the output voltage signal of the power supply after the first time is delayed.

Wherein, the target voltage difference corresponds to the current voltage value, which can be understood as: if the variation amplitude of the voltage drop from the current voltage value does not exceed the target voltage difference, the influence of the voltage drop on the noise generated by the electronic equipment is small, for example, the noise generated by the electronic equipment cannot be caused or can be ignored, and therefore, poor use experience cannot be generated for a user; if the voltage drop from the current voltage value changes by a magnitude exceeding the target voltage difference, the noise generated by the electronic device may be greatly influenced, for example, the components of the electronic device may be caused to resonate, and the noise is loud, which may result in a poor user experience.

For example, the current voltage value of the voltage signal output by the power supply to the electronic device is 1v, and the corresponding target voltage difference is 0.3v, and if the target voltage value required by the electronic device is 0.5v, then the voltage difference between 1v and 0.5v is greater than 0.3v, at this time, the control condition is satisfied, at this time, the preset time duration, for example, 0.8 second, may be delayed, and then the voltage reduction processing is performed on the output voltage signal of the power supply, thereby reducing the time duration of noise caused by immediately reducing from 1v to 0.5v, and further reducing the noise, as shown in fig. 48;

or, for another example, the current voltage value of the voltage signal output by the power supply to the electronic device is 1v, and the corresponding target voltage difference is 0.3v, and if the target voltage value required by the electronic device is 0.8v, the voltage difference between 1v and 0.8v, 0.2v, is less than 0.3v, at this time, the control condition is not satisfied, and at this time, the voltage reduction processing is not performed on the output voltage signal of the power supply directly but delayed.

In one implementation, step 4603 may be implemented specifically by:

and in the voltage reduction period indicated in the voltage request instruction, after the first time length is prolonged, the voltage reduction processing is carried out on the output voltage signal of the power supply.

The voltage drop period may be understood as a voltage drop period required by the second component, that is, the voltage signal required by the second component to output the power supply reaches a required voltage within the voltage drop period, and the first period delayed in this embodiment may be determined according to the voltage drop period required in the voltage request instruction, for example, the extended period may be half or 2/3 of the voltage drop period, or according to the voltage drop period required in the voltage request instruction, for example, the CPU requires voltage drop within a waveform period in the voltage request instruction, or performs voltage drop within a fixed period, for example, 1 second.

For example, the CPU needs to step down from 1v to 0.5v in a waveform period in the voltage request command, and based on the scheme in this embodiment, if it is determined that 0.5v meets the corresponding control condition, the voltage signal of 1v is stepped down to 0.5v after delaying 2/3 waveform periods, so that the output voltage signal of the power supply to the CPU in a waveform period is reduced from 1v to 0.5v, which meets the requirement of the CPU for voltage, and in a waveform period, the time for holding 0.5v after voltage drop is reduced, thereby reducing the time for generating noise due to voltage drop;

or, the CPU needs to reduce the voltage from 1v to 0.5v within 1 second in the voltage request command, based on the scheme in this embodiment, if it is determined that 0.5v meets the corresponding control condition, the voltage signal of 1v is reduced to 0.5v after delaying for 0.7 second, so that the output voltage signal of the power supply to the CPU is reduced from 1v to 0.5v within 1 second, which meets the voltage requirement of the CPU, and moreover, the time for holding 0.5v after voltage drop is reduced within 1 second, compared with the scheme of maintaining 1 second without delaying for 0.5v, the time length of noise generation due to voltage drop is significantly reduced.

As can be seen, in the present embodiment, based on the requirement of the electronic device for the voltage signal: the voltage drop is performed in the voltage drop period, and the voltage drop time point in the voltage drop period is not limited, so that the voltage drop time point is delayed in the voltage drop period in the embodiment, the voltage drop duration is reduced, the duration generated by noise caused by the voltage drop is reduced, the noise is reduced, and the use experience of a user on the electronic equipment is improved.

Based on the above implementation, before step 4603 in this embodiment, the following steps may also be included, as shown in fig. 49:

step 4605: and generating a completion instruction and sending the completion instruction to the electronic equipment.

Wherein, the completion instruction is generated by indicating that the voltage drop of the power supply is completed. In this embodiment, if the voltage drop parameter meets the corresponding control condition, in this embodiment, a completion instruction may be sent to the electronic device first to notify that the voltage drop of the electronic device is completed, so as to meet the operation requirement of the electronic device, during which the first duration is delayed, and then the voltage drop processing is performed on the output voltage signal of the power supply. Immediately before step 4605 performs the voltage reduction process on the output voltage signal of the power supply, a completion instruction may be issued after completion of the generation.

After the output voltage signal of the power supply is subjected to voltage reduction processing, the processed voltage request command can be clear, and then the next new voltage request command is received and processed.

In an implementation manner, further, when the output voltage of the power supply is subjected to voltage reduction processing after delaying the first duration, the voltage drop rate may be too high due to shortening the time duration of voltage drop, and if the voltage drop rate exceeds a certain threshold, a large voltage difference may be caused in the voltage drop process for components in the electronic device, such as a ceramic capacitor on a motherboard, so that the vibration amplitude of the ceramic capacitor in the voltage drop process is increased, and further a large noise is generated, for this reason, in order to further reduce the noise in this embodiment, the voltage drop rate may also be obtained, for example, the voltage drop rate corresponding to the target voltage value and the current voltage value included in the voltage request instruction in the voltage drop duration is calculated, and after obtaining the voltage drop rate, the voltage drop rate is compared with a preset rate threshold, if the voltage drop rate is greater than the preset rate threshold value, the voltage drop rate of the voltage output by the power supply is set to be at a fixed lower rate value, so that the voltage difference between two ends of components such as a ceramic capacitor is reduced by reducing the voltage drop rate, the vibration amplitude of the ceramic capacitor is further reduced, the resonance amplitude of the whole electronic equipment including a mainboard and other structures is reduced, and the sound intensity level of audio noise is greatly reduced.

In addition, in the above scheme for reducing the voltage drop rate, the method may be applied to a scenario where the electronic device is in a standby mode or where the voltage drop rate or whether the target voltage value of the voltage drop has to be met is required to be relatively special, for example, the electronic device is in the standby mode, and the CPU has no high requirement for the output voltage signal of the power supply, in this case, in this embodiment, it may be determined whether the electronic device is in the standby mode or in a mode where the output voltage requirement for the power supply is not high by determining whether the CPU output current is greater than a certain value, and then, the voltage drop rate may be monitored after the electronic device delays for a first time, and when the voltage drop rate is too high, the voltage drop rate is reduced to a fixed small value, so that the voltage difference between two ends of the components such as the ceramic capacitor is reduced by reducing the voltage drop rate, and, therefore, the resonance amplitude of the whole electronic equipment including the mainboard and other structures is reduced, the time length of noise generation on the ceramic capacitor is reduced, and the sound intensity level of audio noise is greatly reduced.

It should be noted that, the execution sequence for determining whether the CPU output current is greater than a certain value may also be performed after delaying for the first time period or after monitoring and comparing the voltage drop rate, and the resulting technical solutions are also within the scope of the present disclosure.

Referring to fig. 50, a schematic structural diagram of a control device according to a fourteenth embodiment of the disclosure is applicable to an electronic device with a power supply to control noise of the electronic device.

In this embodiment, the apparatus may include the following structure:

an instruction obtaining unit 5001 is configured to obtain a voltage request instruction of the electronic device.

The voltage request command at least comprises a voltage drop parameter requested by the electronic equipment. For example, in order to run an application or enter a working mode, the electronic device needs the power supply to output a corresponding voltage to support the running of the application or the working mode, and at this time, the electronic device generates a voltage request instruction to notify the power supply to know the current required voltage of the electronic device, such as boosting the voltage to a certain value or reducing the voltage to a certain value, and then boosting the voltage to a certain value or reducing the voltage to a certain value within a certain time period, and so on, i.e., a voltage drop parameter.

The voltage request command may be a command generated by a Central Processing Unit (CPU) in the electronic device, such as an SVID command, for notifying the power supply to output the required voltage to the CPU.

The delay control unit 5002 is configured to delay the first duration and then perform voltage reduction on the output voltage signal of the power supply if the voltage drop parameter meets the control condition corresponding to the voltage drop parameter.

In this embodiment, the delay control unit 5002 may determine whether to perform voltage reduction processing on the output voltage signal of the power supply after delaying the first time length by determining whether the voltage drop parameter satisfies the corresponding control condition, for example, performing condition determination on the voltage required by the electronic device in the voltage drop parameter.

The time length delayed in the embodiment may be set according to a user requirement, for example, if the user needs to completely mute, the time length may be set to be longer, so as to reduce the time for maintaining the low voltage after the voltage drop, thereby reducing the time length for generating noise due to the voltage drop.

According to the above technical scheme, after the voltage request instruction of the electronic device is obtained, whether the voltage drop parameter requested by the electronic device in the voltage request instruction meets the corresponding control condition is identified, and when the voltage drop parameter meets the corresponding control condition, voltage drop processing is performed on the output voltage signal of the power supply after the first time is delayed.

In one implementation, the delay control unit 5002 determines that the voltage drop parameter meets the control condition corresponding to the voltage drop parameter, and specifically may:

the magnitude relation between the target voltage value in the voltage drop parameter and the current voltage value of the power supply and the first reference value corresponding to the current voltage value meets the control condition, for example, the first reference value is between the current voltage value and the target voltage value, namely, the control condition is met;

or

The magnitude relation between the target voltage value of the voltage drop parameter and the voltage difference between the current voltage value of the power supply and the target voltage difference corresponding to the current voltage value meets the control condition, for example, the voltage difference between the target voltage value and the current voltage value is greater than the target voltage difference corresponding to the current voltage value, that is, the control condition is met.

When the delay control unit 5002 delays the first time period to perform voltage reduction processing on the output voltage signal of the power supply, specifically, the following steps may be performed:

and in the voltage reduction period indicated in the voltage request instruction, after delaying the first time length, performing voltage reduction processing on the output voltage signal of the power supply.

Accordingly, before the delay control unit 5002 delays for the first time period, a completion instruction may also be generated and sent to the electronic device, thereby notifying the electronic device of the completion of the step-down.

It should be noted that, for the specific implementation of each unit of the apparatus in this embodiment, reference may be made to the foregoing relevant contents, and details are not described here.

Referring to fig. 51, a schematic structural diagram of a power supply provided in a fifteenth embodiment of the present disclosure, where the power supply may be disposed in an electronic device to provide power for the electronic device.

In this embodiment, the power supply may include the following structure:

the controller 5101 is configured to obtain a voltage request command of the electronic device.

The voltage request command at least comprises a voltage drop parameter requested by the electronic equipment. For example, in order to run an application or enter a working mode, the electronic device needs the power supply to output a corresponding voltage to support the running of the application or the working mode, and at this time, the electronic device generates a voltage request instruction to notify the power supply to know the current required voltage of the electronic device, such as boosting the voltage to a certain value or reducing the voltage to a certain value, and then boosting the voltage to a certain value or reducing the voltage to a certain value within a certain time period, and so on, i.e., a voltage drop parameter. Accordingly, the controller 5101 in the power supply obtains a voltage request instruction generated by the electronic apparatus.

The controller 5101 may be implemented as a power control chip in a power supply.

The comparator 5102 is configured to determine whether the voltage drop parameter meets a control condition corresponding to the voltage drop parameter, and if the voltage drop parameter meets the control condition corresponding to the voltage drop parameter, the comparator 5101 is triggered to delay for a first time period and then perform voltage reduction processing on the output voltage signal of the power supply.

In this embodiment, the comparator 5102 may determine whether to trigger the controller 5101 to perform voltage reduction processing on the output voltage signal of the power supply after delaying for the first time period by determining whether the voltage drop parameter satisfies the corresponding control condition, for example, performing condition determination on the voltage required by the electronic device in the voltage drop parameter.

In one implementation, the comparator 5102 determines that the pressure drop parameter meets the control condition corresponding to the pressure drop parameter, and specifically may be:

or

When the controller 5101 performs voltage reduction processing on the output voltage signal of the power supply with a delay of the first time period, specifically, the voltage reduction processing may be:

Accordingly, before the controller 5101 delays for the first time period, a completion instruction may be generated and sent to the electronic device, thereby notifying the electronic device of the completion of the step-down.

It should be noted that, in the present embodiment, reference may be made to the foregoing contents for specific implementation of each component of the power supply, and details are not described here.

Referring to fig. 52, a schematic structural diagram of a control device according to a sixteenth embodiment of the present disclosure is applicable to an electronic device with a power supply to control noise of the electronic device.

In this embodiment, the apparatus may include the following structure:

the detector 5201 acquires voltage output information of the power supply, the voltage output information indicating that the power supply will perform voltage output according to a first variation pattern in a first period of time in the future, and specifically, for acquiring a voltage request command of the electronic device.

The controller 5202 is configured to, in response to that the first variation pattern meets the first control condition, control the power supply to output the voltage according to the second variation pattern, and specifically, the controller 5202 determines whether the droop parameter meets the control condition corresponding to the droop parameter, and if the droop parameter meets the control condition corresponding to the droop parameter, performs voltage reduction on the output voltage signal of the power supply after delaying for the first duration.

In this embodiment, the controller 5202 may determine whether to perform voltage reduction processing on the output voltage signal of the power supply after delaying the first time period by determining whether the voltage drop parameter satisfies the corresponding control condition, for example, performing condition determination on the voltage required by the electronic device in the voltage drop parameter.

According to the above technical scheme, after the voltage request instruction of the electronic device is obtained, whether the voltage drop parameter requested by the electronic device in the voltage request instruction meets the corresponding control condition is identified, and when the voltage drop parameter meets the corresponding control condition, voltage drop processing is performed on the output voltage signal of the power supply after the first time delay.

Referring to fig. 53, a schematic structural diagram of an electronic device provided in a seventeenth embodiment of the present disclosure, the electronic device may include the following structure:

a power supply 5301;

the first component 5302 is excited by a voltage change of the power supply 5301 to generate noise, such as a ceramic capacitor.

The second component 5303 is configured to generate a voltage request command, such as a CPU.

The voltage request command at least includes voltage output information that the power supply will output voltage according to a first change pattern in a future first time period, and specifically, the first change pattern in the voltage output information includes a voltage drop parameter requested by the electronic device. The second component 5303 can be a CPU in the electronic device that requests output voltage from a power supply to support operation of applications and systems. In a particular implementation, the voltage request instruction may be implemented as a setVID command for SVID.

The processor 5304 is configured to obtain voltage output information of the power supply 5301, where the voltage output information indicates that the power supply 5301 will perform voltage output in a first variation mode within a first time period, and control the power supply 5301 to perform voltage output in a second variation mode in response to that the first variation mode meets a first control condition, where specifically, the processor 5304 obtains a voltage request instruction sent by the second component 5303, and performs voltage reduction processing on an output voltage signal of the power supply 5301 after delaying for a first time period if a voltage drop parameter in the first variation mode meets the control condition corresponding to the voltage drop parameter.

For example, when a CPU in an electronic device needs to output a corresponding voltage to support an application or a working mode in order to run the application or the working mode, the CPU generates a voltage request instruction to notify the power supply of knowing a current required voltage of the CPU, such as boosting the voltage to a certain value or reducing the voltage to a certain value, and then boosting the voltage to a certain value or reducing the voltage to a certain value within a certain time period, and so on, i.e., a voltage drop parameter.

The processor 5304 may determine whether to perform voltage reduction processing on the output voltage signal of the power supply after delaying for the first time period by determining whether the voltage drop parameter satisfies a corresponding control condition, for example, by performing conditional determination on the voltage required by the second component 5303 in the voltage drop parameter.

The time length delayed by the processor 5304 may be set according to user requirements, for example, if the user needs to mute completely, the time length may be set to be longer, so as to reduce the time for maintaining the low voltage after the voltage drop, and thus reduce the time length for generating noise due to the voltage drop.

According to the above technical scheme, in the electronic device provided by the seventeenth embodiment of the present disclosure, after the voltage request instruction of the target component is obtained, whether the voltage drop parameter requested by the target component in the voltage request instruction meets the corresponding control condition is identified, and when the voltage drop parameter meets the corresponding control condition, voltage drop processing is performed on the output voltage signal of the power supply after delaying the first time period.

In one implementation, the processor 5304 determines that the pressure drop parameter meets the control condition corresponding to the pressure drop parameter, and specifically may be:

or

When the processor 5304 performs the voltage reduction processing on the output voltage signal of the power supply with the first delay, the following steps may be specifically performed:

Accordingly, before the processor 5304 delays for the first time period, a completion instruction may be generated and sent to the electronic device, which may inform the electronic device of the completion of the step-down.

It should be noted that, in the present embodiment, reference may be made to the foregoing relevant contents for specific implementations of each component in the electronic device, and details are not described here.

In a specific implementation, the electronic device is a notebook computer, the second component is a CPU, and the first component is a ceramic capacitor, which are taken as examples in this disclosure, and the above embodiments are exemplified:

according to the scheme, the reference voltage X, the comparator and the delay feedback circuit (delay is Y) are added in the circuit, then the target voltage value is obtained by utilizing the setVID command of the CPU SVID to be compared with the X, and the purpose is to always keep the voltage drop starting time from the high voltage to the low voltage after the X and the Y are operated, so that the duration that the ceramic capacitor is in vibration can be reduced to the maximum extent on the premise of meeting the SVID protocol, the duration that vibration noise is generated is reduced, the noise of the whole mainboard is reduced, and the noise reduction is realized. The method comprises the following specific steps:

referring to fig. 54 and 55, X is a reference voltage, Vout is a current voltage value, and the following illustrates a noise reduction procedure:

1. the CPU sends an SVID command (VID command down) to request the power supply to perform voltage drop;

2. after receiving the SVID instruction, the power supply chip analyzes the SVID instruction, compares whether the target voltage value is below a reference voltage X, and if so, reports the voltage to the CPU for setting, namely, voltage drop;

3. delaying the power supply for a duration of Y after reporting to the CPU;

4. the power supply executes a voltage reduction command after delaying the duration of Y, namely, the current voltage value is reduced to a target voltage value;

5. clearing the processed voltage request instruction;

6. the CPU sends a voltage request instruction to request the voltage to rise back;

7. after the power supply receives a voltage request command requiring voltage rising, the voltage is raised immediately;

8. the power supply reports the voltage to the CPU for setting, i.e., boosting.

The specific flow chart is shown in fig. 56:

1. after the CPU starts working, an SVID instruction is sent to a power supply to request for outputting voltage;

2. a power supply chip of the CPU receives the SVID instruction and reads out a target voltage value required by the current instruction voltage;

3. comparing the target voltage value with a reference voltage X, judging whether the target voltage value is greater than X, if so, executing step 4, otherwise, executing step 5;

4. immediately executing the SVID instruction by a power supply chip of the CPU and feeding back to the CPU to finish voltage reduction, and ending the scheme;

5. delaying the work of the feedback line and delaying the duration of Y, and executing 6;

6. after the power chip of the CPU delays the time length of Y, the SVID instruction is executed and fed back to the completion of the step-down of the CPU (or the step-down of the CPU is fed back immediately before the time length of Y is delayed in step 5), and the scheme is ended.

Further, when the SVID instruction is executed, the following process may be further included:

7. detecting the output current of the CPU, if the output current is larger than a certain value, executing 8 if the output current is larger than the certain value, otherwise, executing 9;

8. the power chip sets the slew rate (namely, the voltage drop rate) when executing the SVID instruction to be a fixed small value, executes the SVID instruction to reduce the slew rate and keep the slew rate stable, and finishes the scheme;

9. and the power supply chip maintains the slew rate when executing the SVID instruction, executes the SVID instruction and ends the scheme.

In the embodiment of the disclosure, by determining whether the voltage drop parameter during the voltage drop process of the electronic device meets the control condition, if the reference value corresponding to the current voltage value is between the current voltage value and the target voltage value, if yes, delaying the first time length and then carrying out voltage reduction processing on the output voltage signal of the power supply, and further, when the voltage reduction treatment is carried out after the first time is delayed, the voltage reduction rate can be monitored, and then when the voltage reduction rate is too high, the voltage reduction rate is reduced to a fixed small value, so that the voltage difference between two ends of components such as a ceramic capacitor and the like is reduced by reducing the voltage reduction rate, and then reduce ceramic capacitor's vibration amplitude, reduce the resonance amplitude that whole electronic equipment includes structures such as mainboard from this, realize reducing ceramic capacitor and go up the time length that the noise produced, reduce the sound intensity level of audio noise by a wide margin.

The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. The device disclosed by the embodiment corresponds to the method disclosed by the embodiment, so that the description is simple, and the relevant points can be referred to the method part for description.

Those of skill would further appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, computer software, or combinations of both, and that the various illustrative components and steps have been described above generally in terms of their functionality in order to clearly illustrate this interchangeability of hardware and software. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present disclosure.

The steps of a method or algorithm described in connection with the embodiments disclosed herein may be embodied directly in hardware, in a software module executed by a processor, or in a combination of the two. A software module may reside in Random Access Memory (RAM), memory, Read Only Memory (ROM), electrically programmable ROM, electrically erasable programmable ROM, registers, hard disk, a removable disk, a CD-ROM, or any other form of storage medium known in the art.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present disclosure. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the disclosure. Thus, the present disclosure is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A control method, comprising:

the first noise is greater than or equal to a second noise;

wherein, in the electronic device powered by the power supply, there is a first component which is excited by a voltage change of the power supply to generate the first noise or the second noise; further comprising a second component, the voltage output information of the power supply comprising: the change information of the voltage required by the second component is obtained by monitoring a voltage request instruction sent by the second component to the power supply;

the first variation pattern meets a first control condition, including:

and controlling the power supply to perform voltage reduction processing on the output voltage signal after delaying for a first time length, so that the voltage reduction starting time in the process of always keeping the high voltage to the low voltage is always after the power supply delays for the first time length.

2. The method of claim 1, the pressure drop parameter complying with a control condition corresponding to the pressure drop parameter, comprising:

3. The method according to claim 2, wherein a magnitude relationship between a target voltage value in the voltage drop parameter and a current voltage value of the power supply and a first reference value corresponding to the current voltage value satisfies a control condition, and the method comprises:

4. The method of claim 1, the pressure drop parameter complying with a control condition corresponding to the pressure drop parameter, comprising:

5. The method of claim 4, wherein a magnitude relationship between a voltage difference between a target voltage value in the voltage drop parameter and a current voltage value of the power supply and a target voltage difference corresponding to the current voltage value satisfies a control condition, and the method comprises:

6. The method of claim 1, 2 or 4, wherein controlling the power supply to perform the step-down processing on the output voltage signal after delaying for the first time period comprises:

7. A control device, comprising:

the first noise is greater than or equal to a second noise;

the first variation pattern meets a first control condition, including:

8. An electronic device, comprising:

a power source;

the first noise is greater than or equal to a second noise;

further comprising a second component, the voltage output information of the power supply comprising: the change information of the voltage required by the second component is obtained by monitoring a voltage request instruction sent by the second component to the power supply;

the first variation pattern meets a first control condition, including: