CN114327009A - Computer power supply and computer - Google Patents

Abstract

The invention provides a computer power supply and a computer, which are provided with a DC/DC power supply conversion chip, a working state acquisition module and a control module. Firstly, the working state obtaining module detects whether the current working state of the computer is the S3 state or the S4 state or the S5 state, if so, the control module controls the voltage of the enable pin of the DC/DC power conversion chip so that the DC/DC power conversion chip adjusts the working frequency of the DC/DC power conversion chip from the normal working frequency to the preset working frequency outside the audible range of human ears, and thus, even if the mechanical deformation of the MLCC forms resonance with the computer main board, the human ears cannot be heard, and the user experience is optimized.

Description

Computer power supply and computer

Technical Field

The invention relates to the field of computers, in particular to a computer power supply and a computer.

Background

In consideration of the cost and the appearance of a computer, an MLCC (Multi-Layer Ceramic Capacitors) is usually used when selecting the capacitance of the input/output end of a motherboard power supply, but the MLCC has an electrostrictive effect, that is, when a certain electric field is applied to two ends of the MLCC, the MLCC generates a mechanical deformation along the direction of the electric field, if the mechanical deformation generated by the MLCC forms resonance with the motherboard of a notebook computer, noise is generated, if the vibration frequency is within 20HZ to 20KHZ, the MLCC can be heard by human ears, especially when the notebook computer enters the S3 state or the S4 state or the S5 state, the power consumption is small, the operating frequency of the notebook computer is low, and the probability of the mechanical deformation generated by the MLCC and the noise generated by the resonance of the motherboard of the notebook computer are in a large audible range, which brings a bad use experience to a user.

Disclosure of Invention

The invention aims to provide a computer power supply and a computer, when the computer works in an S3 state, an S4 state or an S5 state, a DC/DC power conversion chip can adjust the working frequency of the chip from a normal working frequency to a preset working frequency outside the audible range of human ears, so that even if mechanical deformation of an MLCC (multi-level capacitor) is generated to form resonance with a computer main board, the human ears cannot hear the computer main board, and the user experience is optimized.

In order to solve the above technical problem, the present invention provides a computer power supply, comprising:

the DC/DC power conversion chip is used for adjusting the working frequency of the DC/DC power conversion chip from the normal working frequency to a preset working frequency outside the audible range of human ears when the voltage of an enabling pin of the DC/DC power conversion chip is in a first range;

the working state acquisition module is used for detecting whether the current working state of the computer is an S3 state, an S4 state or an S5 state, and if so, controlling the output end of the working state acquisition module to output a first control signal;

and the control module is used for outputting a first voltage to the enable pin when receiving the first control signal, wherein the first voltage is in the first range.

Preferably, the first control signal includes a first high level and a second high level, and the output end of the working state obtaining module includes a first pin and a second pin;

the control module comprises a first resistor, a second resistor, a controllable switch and a power supply, wherein the first end of the first resistor is respectively connected with the first pin and the power supply, the control end of the controllable switch is connected with the second pin, the second end of the first resistor is connected with the first end of the second resistor, the public end of the first resistor is used as the output end of the control module and is connected with the enabling pin, the second end of the second resistor is connected with the first end of the controllable switch, and the second end of the controllable switch is grounded;

controlling the output end of the working state acquisition module to output a first control signal, comprising:

controlling the first pin to output the first high level, and controlling the second pin to output the second high level;

the controllable switch is used for conducting when receiving the second high level, so that the voltage of the connection end of the first resistor and the second resistor is in the first range.

Preferably, the DC/DC power conversion chip is further configured to operate at the normal operating frequency when the voltage of the enable pin is in a second range;

the working state acquisition module is further used for controlling the output end to output a second control signal when the working state is not the S3 state, not the S4 state and not the S5 state;

the control module is further configured to output a second voltage to the enable pin when receiving the second control signal, where the second voltage is within the second range.

Preferably, the second control signal includes a third high level and a fourth low level;

controlling the output end to output a second control signal, comprising:

controlling the first pin to output the third high level, and controlling the second pin to output the fourth low level;

the controllable switch is used for being turned off when the fourth low level is received so as to enable the voltage of the enabling pin to be in the second range.

Preferably, the controllable switch is an NMOS, a gate of the NMOS serves as a control end of the controllable switch, a drain of the NMOS serves as a first end of the controllable switch, and a source of the NMOS serves as a second end of the controllable switch.

Preferably, the working state obtaining module is an EC in the computer.

Preferably, the DC/DC power conversion chip is a RICHTEK RT6285 power chip.

Preferably, the preset frequency is greater than 20 KHZ.

Preferably, the device further comprises a PCH, wherein the PCH comprises an S3 status pin, an S4 status pin and an S5 status pin;

the working state acquisition module further comprises a third pin connected with the S3 state pin, a fourth pin connected with the S4 state pin and a fifth pin connected with the S5 state pin;

the PCH is used for controlling the S3 state pin to output a low level and controlling the S4 state pin and the S5 state pin to output a high level when the working state is the S3 state; when the working state is an S4 state, controlling the S3 state pin and the S4 state pin to output a low level and controlling the S5 state pin to output a high level; when the working state is an S5 state, controlling the S3 state pin, the S4 state pin and the S5 state pin to output a low level;

detecting whether the current working state of the computer is the S3 state, the S4 state or the S5 state, including:

detecting the level of the third pin, the fourth pin and the fifth pin;

if the third pin is at a low level, and the fourth pin and the fifth pin are both at a high level, the working state is an S3 state;

if the third pin and the fourth pin are both at a low level and the fifth pin is at a high level, the working state is an S4 state;

if the third pin, the fourth pin and the fifth pin are all at low level, the working state is an S5 state.

The invention also provides a computer comprising the computer power supply.

The invention provides a computer power supply and a computer, which are provided with a DC/DC power supply conversion chip, a working state acquisition module and a control module. Firstly, the working state obtaining module detects whether the current working state of the computer is the S3 state or the S4 state or the S5 state, if so, the control module controls the voltage of the enable pin of the DC/DC power conversion chip so that the DC/DC power conversion chip adjusts the working frequency of the DC/DC power conversion chip from the normal working frequency to the preset working frequency outside the audible range of human ears, and thus, even if the mechanical deformation of the MLCC forms resonance with the computer main board, the human ears cannot be heard, and the user experience is optimized.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed in the prior art and the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

FIG. 1 is a schematic diagram of a computer power supply according to the present invention;

FIG. 2 is a schematic diagram of another computer power supply according to the present invention.

Detailed Description

The core of the invention is to provide a computer power supply and a computer, when the computer works in an S3 state, an S4 state or an S5 state, a DC/DC power conversion chip can adjust the working frequency of the chip from the normal working frequency to a preset working frequency outside the audible range of human ears, so that even if the MLCC generates mechanical deformation and forms resonance with the computer main board, the human ears cannot hear the computer main board, and the user experience is optimized.

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1, fig. 1 is a schematic structural diagram of a computer power supply provided in the present invention, the computer power supply includes:

the DC/DC power conversion chip 3 is used for adjusting the working frequency of the DC/DC power conversion chip 3 from the normal working frequency to a preset working frequency outside the audible range of human ears when the voltage of an enabling pin of the DC/DC power conversion chip 3 is in a first range;

the working state acquiring module 1 is configured to detect whether a current working state of the computer is an S3 state, an S4 state, or an S5 state, and if so, control an output end of the working state acquiring module 1 to output a first control signal;

the control module 2 is configured to output a first voltage to the enable pin when receiving the first control signal, where the first voltage is within a first range.

The working states of the computer include an S0 state (the computer works normally, all hardware devices are in an open state or a normal state), an S1 state (the CPU stops working, other hardware devices still work normally), an S2 state (the CPU is turned off, but the other hardware devices still work), an S3 state (the hard disk is turned off after data in operation is written into the memory), an S4 state (memory information is written into the hard disk, and then all components stop working), and an S5 state (all hardware devices and power supplies are turned off, namely, the computer is turned off), wherein when the computer is in the S3 state, the S4 state, and the S5 state, the working frequency of the DC/DC power conversion chip 3 is low, and noise caused by the mechanical deformation of the MLCC and the resonance of the computer motherboard is particularly obvious.

In order to solve the above technical problem, in the present application, firstly, the working state obtaining module 1 detects whether the current working state of the computer is the S3 state, the S4 state, or the S5 state, if so, the working state obtaining module 1 outputs a first control signal, and then the control module 2 outputs a first voltage to the enable pin of the DC/DC power conversion chip 3 when receiving the first control signal. The DC/DC power conversion chip 3 in this application can adjust the working frequency of itself to the preset working frequency outside the audible range of human ears from the normal working frequency when the voltage of its enable pin is in the first range, the sound frequency that human ears can hear is about 20HZ to 20KHZ, the preset working frequency in this application is outside 20HZ to 20KHZ, and specific numerical value does not make special limitation.

In addition, the DC/DC power conversion chip 3 in this application may select a chip supporting a USM (ultrasonic Mode) function, and when the working state obtaining module 1 detects that the current working state of the computer is the S3 state, the S4 state, or the S5 state, the DC/DC power conversion chip 3 is enabled to work in the USM Mode by controlling the voltage of the enable pin of the DC/DC power conversion chip 3.

In summary, the computer power supply provided by the present invention is provided with a DC/DC power conversion chip 3, a working state obtaining module 1 and a control module 2. When the current working state of the computer is the S3 state, the S4 state, or the S5 state, the DC/DC power conversion chip 3 can adjust the working frequency of itself from the normal working frequency to the preset working frequency outside the audible range of human ears, so that even if the mechanical deformation of the MLCC generates resonance with the computer motherboard, human ears cannot hear, thereby optimizing the user experience.

On the basis of the above-described embodiment:

as a preferred embodiment, the first control signal includes a first high level and a second high level, and the output terminal of the operating state obtaining module 1 includes a first pin and a second pin;

the control module 2 comprises a first resistor, a second resistor, a controllable switch and a power supply, wherein the first end of the first resistor is respectively connected with a first pin and the power supply, the control end of the controllable switch is connected with a second pin, the second end of the first resistor is connected with the first end of the second resistor, the public end of the first resistor is used as the output end of the control module 2 and is connected with an enabling pin, the second end of the second resistor is connected with the first end of the controllable switch, and the second end of the controllable switch is grounded;

the output end of the control working state obtaining module 1 outputs a first control signal, which comprises:

controlling the first pin to output a first high level and controlling the second pin to output a second high level;

the controllable switch is used for conducting when receiving the second high level, so that the voltage of the connection end of the first resistor and the second resistor is in a first range.

In this embodiment, when the current operating state of the computer is the S3 state, the S4 state, or the S5 state, the first pin of the operating state obtaining module 1 outputs the first high level, the second pin outputs the second high level, and the controllable switch is turned on when receiving the second high level, and the first resistor and the second resistor divide the voltage, so that the voltage at the connection end of the first resistor and the second resistor may be in the first range, that is, the voltage at the enable pin of the DC/DC power conversion chip 3 is in the first range, so that the DC/DC power conversion chip 3 can adjust the operating frequency thereof from the normal operating frequency to the preset operating frequency outside the audible range of human ears, and thus, even if the MLCC generates mechanical deformation to form resonance with the computer motherboard, human ears cannot hear, and thus the user experience is optimized.

For example, the power supply is 3.3V, after the controllable switch receives the second high level and is turned on, the voltage at the connection end of the first resistor and the second resistor is between 0.8V and 1.7V, and when the voltage at the enable pin of the DC/DC power conversion chip 3 is between 0.8V and 1.7V, the operating frequency of the chip is adjusted from the normal operating frequency to a preset operating frequency outside the audible range of human ears.

As a preferred embodiment, the DC/DC power conversion chip 3 is further configured to operate at a normal operating frequency when the voltage of the enable pin is in a second range;

the working state obtaining module 1 is further configured to control the output terminal to output a second control signal when the working state is not the S3 state, not the S4 state, and not the S5 state;

the control module 2 is further configured to output a second voltage to the enable pin when receiving the second control signal, where the second voltage is within a second range.

In this embodiment, when the operating state obtaining module 1 detects that the current operating state of the computer is not the S3 state, not the S4 state, and not the S5 state, the output terminal of the operating state obtaining module 1 outputs the second control signal, and the control module 2 outputs the second voltage to the enable pin of the DC/DC power conversion chip 3 when receiving the second control signal. When the computer is not in the S3 state, the S4 state, and the S5 state, the operating frequency of the DC/DC power conversion chip 3 itself is relatively high, and noise generated by the mechanical deformation of the MLCC and resonance with the computer motherboard is generally not easily heard by human ears, so when the computer is not in the S3 state, the S4 state, and the S5 state, the DC/DC power conversion chip 3 operates at the normal operating frequency, and the loss can be reduced.

As a preferred embodiment, the second control signal includes a third high level and a fourth low level;

the control output outputs a second control signal comprising:

controlling the first pin to output a third high level and controlling the second pin to output a fourth low level;

the controllable switch is configured to turn off when receiving the fourth low level to cause the voltage of the enable pin to be in the second range.

In this embodiment, when the operating state obtaining module 1 detects that the current operating state of the computer is not the S3 state, is not the S4 state, and is not the S5 state, the first pin is controlled to output the third high level, the second pin is controlled to output the fourth low level, the controllable switch is turned off, the voltage of the enable pin of the DC/DC power conversion chip 3 is in the second range, and the DC/DC power conversion chip 3 operates at the normal operating frequency, so that the loss can be reduced.

For example, the power supply is 3.3V, and after the controllable switch receives the fourth low level turn-off, the voltage of the enable pin of the DC/DC power conversion chip 3 operates at the normal operating frequency when the voltage is between 2.3V and 3.3V.

In a preferred embodiment, the controllable switch is an NMOS, a gate of the NMOS serves as a control terminal of the controllable switch, a drain of the NMOS serves as a first terminal of the controllable switch, and a source of the NMOS serves as a second terminal of the controllable switch.

In this embodiment, an NMOS is selected as the controllable switch, a gate of the NMOS is connected to the second pin of the operating state obtaining module 1 as the control end of the controllable switch, a drain of the NMOS is connected to the second end of the second resistor as the first end of the controllable switch, and a source of the NMOS is grounded, so that the first pin of the operating state obtaining module 1 outputs the first high level, and when the second pin outputs the second high level, the conducting condition of the NMOS is satisfied, and after the NMOS is conducted, the voltage at the connecting end of the first resistor and the second resistor is in the first range, that is, the voltage of the enable pin of the DC/DC power converting chip 3 is in the first range, so that the DC/DC power converting chip 3 can adjust the operating frequency of the NMOS from the normal operating frequency to the preset operating frequency outside the audible range of human ears. And the NMOS has higher switching speed, so that the DC/DC power supply conversion chip 3 can adjust the working frequency more quickly and accurately.

In addition, when the first resistor and the second resistor are selected, a proper resistance value is selected, so that after the NMOS is conducted, the voltage of the connecting end of the first resistor and the second resistor can be in a first range.

As a preferred embodiment, the working state acquiring module 1 is an EC in a computer.

In this embodiment, an Embedded Controller (EC) in the multiplexing computer serves as the working state obtaining module 1, and the EC in the computer plays an important role in the portable, intelligent and personalized design of the computer, and is responsible for tasks such as keyboard, touchpad, battery charging and discharging, temperature monitoring and the like.

As a preferred embodiment, the DC/DC power conversion chip 3 is RICHTEK RT6285 power chip.

According to the power supply conversion device, the RICHTEK RT6285 power supply chip is selected as the DC/DC power supply conversion chip 3, and the chip is wide in application, stable in work and simple in maintenance.

As a preferred embodiment, the predetermined frequency is greater than 20 KHZ.

In this embodiment, when the current operating state of the computer is the S3 state, the S4 state, or the S5 state, the DC/DC power conversion chip 3 adjusts its own operating frequency from the normal operating frequency to above 20KHZ, so that even if the mechanical deformation generated by the MLCC resonates with the notebook motherboard to generate noise, the vibration frequency is above 20KHZ and outside the audible range of human ears, thereby optimizing the user experience.

As a preferred embodiment, the device further includes a PCH4, a PCH4 includes an S3 status pin, an S4 status pin, and an S5 status pin;

the working state acquisition module 1 further comprises a third pin connected with the S3 state pin, a fourth pin connected with the S4 state pin, and a fifth pin connected with the S5 state pin;

the PCH4 is used for controlling the S3 status pin to output a low level and controlling the S4 status pin and the S5 status pin to output a high level when the operating status is the S3 status; when the working state is the S4 state, controlling the S3 state pin and the S4 state pin to output low level and controlling the S5 state pin to output high level; when the working state is the S5 state, controlling the S3 state pin, the S4 state pin and the S5 state pin to output low level;

detecting whether the current working state of the computer is the S3 state, the S4 state or the S5 state, including:

detecting the level of the third pin, the fourth pin and the fifth pin;

if the third pin is at a low level, and the fourth pin and the fifth pin are both at a high level, the working state is S3 state;

if the third pin and the fourth pin are both at low level and the fifth pin is at high level, the working state is S4 state;

if the third pin, the fourth pin and the fifth pin are all at low level, the operating state is S5 state.

Referring to fig. 2, fig. 2 is a schematic structural diagram of another computer power supply provided by the present invention.

In this embodiment, the current operating state of the computer is obtained through a PCH4(Platform Controller Hub) of the computer, where the PCH4 includes an S3 state pin, an S4 state pin, and an S5 state pin, and when the current operating state of the computer is different, potentials of the S3 state pin, the S4 state pin, and the S5 state pin are also different, and a third pin, a fourth pin, and a fifth pin of the operating state obtaining module 1 are respectively connected to an S3 state pin, an S4 state pin, and an S5 state pin of the PCH4, so that the operating state obtaining module 1 detects whether the current operating state of the computer is an S3 state, an S4 state, or an S5 state by detecting the potentials of the third pin, the fourth pin, and the fifth pin, and further realizes control of the control module 2.

In order to solve the technical problem, the invention also provides a computer which comprises the computer power supply.

For the related description and introduction of the computer, please refer to the above embodiments, which are not repeated herein.

It is to be noted that, in the present specification, relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. 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 invention. Thus, the present invention 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 (9)

1. A computer power supply, comprising:

the DC/DC power conversion chip is used for adjusting the working frequency of the DC/DC power conversion chip from the normal working frequency to a preset working frequency outside the audible range of human ears when the voltage of an enabling pin of the DC/DC power conversion chip is in a first range;

the working state acquisition module is used for detecting whether the current working state of the computer is an S3 state, an S4 state or an S5 state, and if so, controlling the output end of the working state acquisition module to output a first control signal;

and the control module is used for outputting a first voltage to the enable pin when receiving the first control signal, wherein the first voltage is in the first range.

2. The computer power supply of claim 1, wherein the first control signal comprises a first high level and a second high level, and the output of the operational state acquisition module comprises a first pin and a second pin;

the control module comprises a first resistor, a second resistor, a controllable switch and a power supply, wherein the first end of the first resistor is respectively connected with the first pin and the power supply, the control end of the controllable switch is connected with the second pin, the second end of the first resistor is connected with the first end of the second resistor, the public end of the first resistor is used as the output end of the control module and is connected with the enabling pin, the second end of the second resistor is connected with the first end of the controllable switch, and the second end of the controllable switch is grounded;

controlling the output end of the working state acquisition module to output a first control signal, comprising:

controlling the first pin to output the first high level, and controlling the second pin to output the second high level;

the controllable switch is used for conducting when receiving the second high level, so that the voltage of the connection end of the first resistor and the second resistor is in the first range.

3. The computer power supply of claim 2, wherein the DC/DC power conversion chip is further configured to operate at the normal operating frequency when the voltage of the enable pin is in a second range;

the working state acquisition module is further used for controlling the output end to output a second control signal when the working state is not the S3 state, not the S4 state and not the S5 state;

the control module is further configured to output a second voltage to the enable pin when receiving the second control signal, where the second voltage is within the second range.

4. The computer power supply of claim 3, wherein the second control signal comprises a third high level and a fourth low level;

controlling the output end to output a second control signal, comprising:

controlling the first pin to output the third high level, and controlling the second pin to output the fourth low level;

the controllable switch is used for being turned off when the fourth low level is received so as to enable the voltage of the enabling pin to be in the second range.

5. The computer power supply of claim 2, wherein the controllable switch is an NMOS, a gate of the NMOS serves as the control terminal of the controllable switch, a drain of the NMOS serves as the first terminal of the controllable switch, and a source of the NMOS serves as the second terminal of the controllable switch.

6. The computer power supply of claim 1, wherein the operating state acquisition module is an EC in the computer.

7. The computer power supply of claim 1, wherein the DC/DC power conversion chip is an RICHTEK RT6285 power chip.

8. The computer power supply of any of claims 1-7, further comprising a PCH, the PCH comprising an S3 status pin, an S4 status pin, and an S5 status pin;

the working state acquisition module further comprises a third pin connected with the S3 state pin, a fourth pin connected with the S4 state pin and a fifth pin connected with the S5 state pin;

the PCH is used for controlling the S3 state pin to output a low level and controlling the S4 state pin and the S5 state pin to output a high level when the working state is the S3 state; when the working state is an S4 state, controlling the S3 state pin and the S4 state pin to output a low level and controlling the S5 state pin to output a high level; when the working state is an S5 state, controlling the S3 state pin, the S4 state pin and the S5 state pin to output a low level;

detecting whether the current working state of the computer is the S3 state, the S4 state or the S5 state, including:

detecting the level of the third pin, the fourth pin and the fifth pin;

if the third pin is at a low level, and the fourth pin and the fifth pin are both at a high level, the working state is an S3 state;

if the third pin and the fourth pin are both at a low level and the fifth pin is at a high level, the working state is an S4 state;

if the third pin, the fourth pin and the fifth pin are all at low level, the working state is an S5 state.

9. A computer comprising a computer power supply as claimed in any one of claims 1 to 8.

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