CN114844471A - Power supply control method, device and system and electronic equipment - Google Patents
Power supply control method, device and system and electronic equipment Download PDFInfo
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F1/00—Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
- H03F1/30—Modifications of amplifiers to reduce influence of variations of temperature or supply voltage or other physical parameters
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F1/00—Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
- H03F1/52—Circuit arrangements for protecting such amplifiers
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
- H03F3/189—High-frequency amplifiers, e.g. radio frequency amplifiers
- H03F3/19—High-frequency amplifiers, e.g. radio frequency amplifiers with semiconductor devices only
- H03F3/195—High-frequency amplifiers, e.g. radio frequency amplifiers with semiconductor devices only in integrated circuits
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
- H03F3/20—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers
- H03F3/21—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers with semiconductor devices only
- H03F3/213—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers with semiconductor devices only in integrated circuits
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F2200/00—Indexing scheme relating to amplifiers
- H03F2200/451—Indexing scheme relating to amplifiers the amplifier being a radio frequency amplifier
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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Abstract
The embodiment of the application discloses a power supply control method, a device, a system and electronic equipment. The power supply control system comprises a power supply module, a power supply path and a radio frequency power amplifier, wherein the power supply module supplies power to the radio frequency power amplifier through the power supply path, a power supply control circuit is arranged on the power supply path, and the power supply control circuit comprises a voltage detection circuit and a switch device; wherein: the voltage detection circuit is configured to detect whether a voltage value passing through the voltage detection circuit is larger than a preset voltage threshold value or not, obtain a detection result, and output a power supply control signal according to the detection result; the switching device is connected with the voltage detection circuit and is configured to control the conduction state of the power supply path according to the power supply control signal.
Description
Technical Field
The present disclosure relates to the field of radio frequency communications, and in particular, to a power control method, device, system and electronic device.
Background
Radio Frequency Power amplifiers (RF PAs) are widely used in electronic countermeasure, satellite communications, and mobile communications systems, and have a significant position. Moreover, the rf power amplifier is more expensive and fragile than other devices in the system, and needs to be protected to ensure the stability of the whole system. Therefore, how to implement the rf power amplifier is a problem to be solved.
Disclosure of Invention
In order to solve any technical problem, embodiments of the present application provide a power control method, device, system, and electronic device.
In order to achieve the purpose of the embodiments of the present application, an embodiment of the present application provides a power supply control system, which includes a power supply module, a power supply path, and a radio frequency power amplifier, where the power supply module supplies power to the radio frequency power amplifier through the power supply path, and the power supply path is provided with a power supply control circuit, where the power supply control circuit includes a voltage detection circuit and a switching device; the voltage detection circuit is provided with a first connecting end, a second connecting end and a signal output end, wherein the switching device is provided with a third connecting end, a fourth connecting end and a signal receiving end; the first connecting end is connected with the third connecting end, the second connecting end and the fourth connecting end are respectively connected with a power supply path, and the signal output end is connected with the signal input end; wherein:
the voltage detection circuit is configured to detect whether a voltage value passing through the voltage detection circuit is larger than a preset voltage threshold value or not, obtain a detection result, and output a power supply control signal according to the detection result;
the switching device is configured to control a conduction state of the power supply path according to the power supply control signal.
A power supply control method applied to the power supply control system described above, the method comprising:
starting timing after the power supply path is in a disconnected state;
after the timing time reaches the preset time, controlling the power supply path to be in a conducting state;
and detecting whether the voltage value is greater than the voltage threshold value, and if the voltage value is less than or equal to the voltage threshold value, keeping the power supply path in a conducting state.
A power control apparatus comprising a memory and a processor, wherein a computer program is stored in the memory and the processor is arranged to execute the method of the computer program.
An electronic device comprising the power control system described above or the power control apparatus described above.
An electronic device, characterized in that it comprises a power control system as described above.
One of the above technical solutions has the following advantages or beneficial effects:
the voltage detection circuit is used for controlling the switching device, so that the radio frequency power amplifier can work normally, and the heating problem caused by burning of the radio frequency power amplifier can be reduced.
Additional features and advantages of the embodiments of the application will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by the practice of the embodiments of the application. The objectives and other advantages of the embodiments of the application may be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
Drawings
The accompanying drawings are included to provide a further understanding of the embodiments of the present application and are incorporated in and constitute a part of this specification, illustrate embodiments of the present application and together with the examples of the embodiments of the present application do not constitute a limitation of the embodiments of the present application.
FIG. 1 is a schematic diagram of the operation of a radio frequency power amplifier;
FIG. 2 is a schematic diagram of the power supply path during abnormal operation of the RF power amplifier;
FIG. 3 is a schematic diagram of a power control system provided by an embodiment of the present application;
FIG. 4 is a schematic diagram of a power control circuit in the power control system of FIG. 3;
FIG. 5 is a schematic diagram of the voltage detection circuit shown in FIG. 4;
FIG. 6 is another schematic diagram of the voltage detection circuit shown in FIG. 5;
FIG. 7 is a schematic deployment diagram of the power control system shown in FIG. 3;
FIG. 8 is a schematic diagram of another deployment of the power control system shown in FIG. 3;
fig. 9 is a flowchart of a power control method according to an embodiment of the present application.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application more apparent, the embodiments of the present application will be described in detail below with reference to the accompanying drawings. It should be noted that, in the embodiments of the present application, features in the embodiments and the examples may be arbitrarily combined with each other without conflict.
Fig. 1 is a schematic diagram of the operation of a radio frequency power amplifier. As shown in fig. 1, the rf Power amplifier is disposed in the rf front-end device, and amplifies the rf signal transmitted by the rf transceiver device, and then transmits the amplified rf signal through the rf path and the antenna, wherein the Power supply of the rf Power amplifier is provided by a Power module disposed outside the rf front-end device, and the Power module is controlled by a Power Control Integrated Circuit (PMIC).
The radio frequency front-end device according to the embodiment of the present application may be applied to a communication device having a wireless communication function, and the communication device may be a handheld device, a vehicle-mounted device, a wearable device, a computing device or other processing devices connected to a wireless modem, and various forms of User Equipment (UE) (e.g., a Mobile phone), a Mobile Station (MS), and other electronic devices having a communication function.
Because the radio frequency power amplifier belongs to a high-power device, the radio frequency power amplifier is inevitable and easy to burn out with small probability under the working scene of high temperature, high power and large current.
Fig. 2 is a schematic diagram of a power supply path when the rf power amplifier operates abnormally. As shown in fig. 2, after the rf power amplifier is burned out, a short circuit may occur inside, which is equivalent to directly short-circuiting the external power source to ground. Because the wiring resistance is very small, an abnormally large current can be generated on the power supply circuit, wherein the magnitude of the abnormal current value can exceed more than 4 times of the normal working current, and the large current can cause the electronic equipment to generate heat seriously, thereby having great influence on normal use.
Fig. 3 is a schematic diagram of a power control system according to an embodiment of the present application. As shown in fig. 3, the power control system includes a power module, a power supply path, and a radio frequency power amplifier, where the power module supplies power to the radio frequency power amplifier through the power supply path, and the power supply path is provided with a power control circuit, and the power control circuit is configured to control a conduction state of the power supply path according to a current magnitude of the power supply path.
Specifically, if the current passing through the power supply path is too large, the power supply control circuit controls the power supply path to be disconnected; on the contrary, if the current passing through the power supply path is in the normal range, the power supply control circuit controls the conduction of the power supply path.
The power supply control circuit controls the conduction state of the power supply channel, so that the radio frequency power amplifier can work in a normal current range, and the heating problem caused by burning of the radio frequency power amplifier is reduced.
Fig. 4 is a schematic diagram of a power control circuit in the power control system shown in fig. 3. As shown in fig. 4, the power supply control circuit includes a voltage detection circuit and a switching device; the voltage detection circuit is provided with a first connecting end, a second connecting end and a signal output end, wherein the switching device is provided with a third connecting end, a fourth connecting end and a signal receiving end; the first connecting end is connected with the third connecting end, the second connecting end and the fourth connecting end are respectively connected with a power supply path, and the signal output end is connected with the signal input end; wherein:
the voltage detection circuit is configured to detect whether a voltage value passing through the voltage detection circuit is larger than a preset voltage threshold value or not, obtain a detection result, and output a power supply control signal according to the detection result;
the switching device is configured to control a conduction state of the power supply path according to the power supply control signal.
The voltage detection circuit is configured to detect whether a voltage value passing through the voltage detection circuit is larger than a preset voltage threshold value or not, obtain a detection result, and output a power supply control signal according to the detection result;
the switching device is connected with the voltage detection circuit and is configured to control the conduction state of the power supply path according to the power supply control signal.
As shown in fig. 4, the voltage detection circuit determines whether the current on the current power supply path is within the normal range by determining the voltage value and the voltage threshold. Specifically, if the voltage value is greater than the voltage threshold, it indicates that the current passing through the voltage detection circuit is too large, and outputs a power supply control signal for controlling the power supply path to be disconnected; on the contrary, if the voltage value is smaller than or equal to the voltage threshold, the current passing through the voltage detection circuit is in a normal range, and a power supply control signal for controlling the conduction of the power supply path is output.
For example, a voltage threshold Vth is set; when the power supply control Signal SW CTRL Signal is at a high level, the switching device VCC SW is closed; when the power supply control Signal SW CTRL Signal is at a low level, the switching device VCC SW is turned off.
The voltage threshold Vth may be determined according to the following ways, including:
acquiring a maximum value of a normal voltage passing through a voltage detection circuit when the radio frequency power amplifier works normally;
calculating the product of the maximum value of the normal voltage and a preset coefficient to be used as the maximum value of the abnormal voltage passing through the voltage detection circuit when the radio frequency power amplifier is burnt;
and determining a voltage threshold Vth according to the maximum abnormal voltage and the maximum normal voltage.
Specifically, when the radio frequency power amplifier is burnt out, an abnormally large current is generated on a power supply path, and the magnitude of the current can exceed 4 times of the normal working current, so that the value of the preset coefficient is between 5 and 10.
After obtaining the maximum abnormal voltage value and the maximum normal voltage value, the difference between the maximum abnormal voltage value and the maximum normal voltage value may be directly used as the voltage threshold Vth, or the difference between the maximum abnormal voltage value and the maximum normal voltage value may be further corrected to obtain the corrected result as the voltage threshold. For example, a corresponding correction coefficient is set, and the product of the difference between the abnormal voltage maximum value and the normal voltage maximum value and the correction coefficient is taken as the voltage threshold Vth.
Furthermore, the power supply control signal distinguishes control contents through level information, and the required hardware cost is low.
When the voltage V passing through the voltage detection circuit is less than or equal to Vth, which indicates that the path current passing through the voltage detection circuit is relatively small, the power supply control Signal SW CTRL Signal output by the voltage detection circuit is at a high level, and the switching device VCC SW is closed, so that the power supply path is in a conduction state, and the radio frequency power amplifier normally operates.
When the current on the VCC path is more than 5-10 times of the normal working current. The voltage drop V of the path passing through the voltage detection circuit is more than 5-10 times of that of the radio frequency power amplifier in normal operation. At the moment, V is larger than Vth, a power supply control Signal SW CTRL Signal output by the voltage detection circuit becomes low level, the switching device VCC SW is disconnected, the power supply of the radio frequency power amplifier is interrupted, and the situation of serious heating caused by continuous abnormal large current on a power supply path is prevented.
From the above analysis, it can be known that the voltage detection circuit is used to control the switching device, so that the rf power amplifier can work normally, and the problem of heat generation caused by burning of the rf power amplifier can be reduced.
Fig. 5 is a schematic diagram of the voltage detection circuit shown in fig. 4. As shown in fig. 5, the voltage detection circuit includes a first branch and a second branch connected in parallel, wherein the first branch includes an impedance device; the second circuit comprises a comparison circuit, wherein the output end of the comparison circuit is connected with the switching device;
wherein the comparison circuit is configured to compare a voltage value of the impedance device with a magnitude of a voltage threshold.
In the first branch circuit, the impedance device is used as a collection object of a voltage value based on the physical characteristics of the impedance device; in the second branch circuit, based on the physical characteristics of the parallel circuit, the voltage value acquired by the comparison circuit is the same as the voltage value passing through the impedance device, so that the purpose of acquiring the voltage value is achieved, and whether the voltage value is greater than the voltage threshold value or not is judged by utilizing the comparison function of the comparison circuit.
Further, the impedance device may be a resistor.
Specifically, the maximum value of the abnormal voltage may be calculated according to the magnitude of the current abnormal value and the magnitude of the resistance, so as to more accurately determine the voltage threshold Vth, thereby improving the accuracy of determining the current abnormality.
Further, the resistor may be an adjustable resistor, and is configured to adjust a magnitude of a current value in the power supply path when the power supply path is in a conducting state.
Because the amplitude of the current value in the power supply path which possibly exceeds the normal current value in a short time is small, the current of the power supply path can be recovered to the normal current value by increasing the resistance value of the adjustable resistor, and the current value in the power supply path is ensured to be in the normal range.
The resistance range of the adjustable resistor is [ A, B ], wherein A and B are positive integers. The initial value of the adjustable resistor on the power supply path is R0.
Calculating the maximum value of the current which can be adjusted by the adjustable resistor according to the maximum value B of the adjustable resistor and the initial value R0 of the adjustable resistor to obtain a current tolerance value;
determining a current value corresponding to the initial value of the resistance value of the adjustable component in the power supply path to obtain an initial current value;
and determining a current adjustable value according to the current initial value and the current tolerance value.
When the current value in the power supply path is larger than the maximum value of the normal current but smaller than the abnormal current value, if the current value is in the adjustable current value range, the resistance value of the adjustable resistor is adjusted, so that the current of the power supply path is restored to be in the normal range.
FIG. 6 is another schematic diagram of the voltage detection circuit shown in FIG. 5. As shown in fig. 6, the comparison circuit includes a voltage comparator, wherein a positive input terminal of the voltage comparator is connected to one end of the impedance device, a negative input terminal of the voltage comparator is connected to the other end of the impedance device, and an output terminal of the voltage comparator is connected to the switching device.
The voltage value of the impedance device is detected by using the device characteristics of the voltage comparator, and the detection is simple.
Fig. 7 is a schematic deployment diagram of the power control system shown in fig. 1. As shown in fig. 7, the voltage detection circuit and the switching device are both disposed on the power supply path in the rf front-end device.
The arrangement mode enables the power supply control system to be arranged in the radio frequency front-end device in a centralized mode, has the characteristic of high integration level, and can save the space occupied by the device.
Fig. 8 is a schematic diagram of another deployment of the power control system shown in fig. 1. As shown in fig. 8, one of the impedance device, the voltage detection circuit and the switching device is disposed on a power supply path in the rf front-end device, and the other is disposed on a power supply path outside the rf front-end device.
The arrangement mode enables the power supply control system to be distributed on the radio frequency front-end device and a power supply circuit between the outside of the radio frequency front-end device and the power supply module, can reasonably utilize the outside vacant space of the radio frequency front-end device, and improves the space utilization rate.
The power supply control circuit realized by hardware may have false triggering with a very small probability, that is, the radio frequency power amplifier is in a normal state, and the power supply path is not short-circuited.
In order to avoid the above problem, embodiments of the present application provide a solution, including:
fig. 9 is a flowchart of a power control method according to an embodiment of the present application. As shown in fig. 9, the method is applied to the power control system described in any one of the above, and the method includes:
when the power supply path is in the off state, the current in the power supply path is overlarge, and the electric quantity on the power supply path is waited to be completely lost through timing operation so as to perform detection again and ensure the accuracy of the detection.
When the power control circuit detects that abnormal large current occurs in the power supply path, namely V is larger than Vth, and the power supply path is disconnected, the switching device is controlled to be closed at intervals of preset duration (for example, 3s), so that the power supply path is in a conducting state, and the current of the power supply path is detected again. If the VCC access current is recovered to be normal current at the moment, namely V is less than Vth, the radio frequency power amplifier is not burnt, the last protection is judged to be false triggering, and the switching device is kept closed, so that the radio frequency power amplifier recovers to work normally.
According to the method provided by the embodiment of the application, after the power supply path is in the off state, whether the voltage value is greater than the voltage threshold value or not is detected again, so that the occurrence of misjudgment can be avoided, and the accuracy of operation is improved.
Further, the detecting whether the voltage value is greater than the voltage threshold includes:
continuously executing the detection operation of the voltage values for N times to obtain N voltage values, wherein N is an integer greater than or equal to 2;
and if the voltage value obtained by one detection operation in N times is less than or equal to the voltage threshold, keeping the power supply path to be conducted.
And continuously detecting for N times, wherein if the voltage value V passing through the voltage detection circuit once is less than or equal to the voltage threshold value, the current of the power supply path is recovered to be normal current, judging that the current is falsely triggered last time, and keeping the power supply path in a conducting state so that the radio frequency power amplifier recovers to normally work.
Further, if the voltage value in N consecutive detection operations of the N detection operations is greater than the voltage threshold value, the power supply path is controlled to be disconnected, where N is a positive integer less than or equal to N.
If the voltage value V passing through the voltage detection circuit for N times is larger than the voltage threshold value continuously, the current of the power supply circuit is always abnormal large current, namely, the current exceeds the normal working current by more than 5-10 times, the radio frequency power amplifier is judged to be burnt out, the switching device needs to be controlled to be switched off, and the problem of heating of electronic equipment caused by the abnormal large current is reduced.
Optionally, if the voltage value in N consecutive detection operations of the N detection operations is greater than the voltage threshold, it is determined that the radio frequency power amplifier is burnt, and detection of a misjudgment is not required, so that the operation of detecting the voltage value of the impedance device is stopped.
Through the actions, the abnormal protection circuit is accurately controlled to be correctly triggered, and the influence of abnormal triggering on the normal use of the PA is avoided.
Further, if the resistor is an adjustable resistor, and the current value in the power supply path is greater than the maximum normal current value but less than the abnormal current value, if the current value is within the preset adjustable current value range, the resistance value of the adjustable resistor is adjusted, so that the current of the power supply path is restored to be within the normal range.
Because the amplitude of the current value in the power supply path which possibly exceeds the normal current value in a short time is small, the current of the power supply path can be recovered to the normal current value by increasing the resistance value of the adjustable resistor, and the current value in the power supply path is ensured to be in the normal range.
The voltage adjustable value is determined in the following mode:
the resistance range of the adjustable resistor is [ A, B ], wherein A and B are positive integers. The initial value of the adjustable resistor on the power supply path is R0.
Calculating the maximum value of the current which can be adjusted by the adjustable resistor according to the maximum value B of the adjustable resistor and the initial value R0 of the adjustable resistor to obtain a current tolerance value;
determining a current value corresponding to the initial value of the resistance value of the adjustable component in the power supply path to obtain an initial current value;
and determining a current adjustable value according to the current initial value and the current tolerance value.
An embodiment of the present application provides a power control apparatus, which includes a memory and a processor, where the memory stores a computer program, and the processor is configured to execute the computer program to perform the method described above.
An electronic device provided by an embodiment of the present application includes the power control system or the power control apparatus described above.
It will be understood by those of ordinary skill in the art that all or some of the steps of the methods, systems, functional modules/units in the devices disclosed above may be implemented as software, firmware, hardware, and suitable combinations thereof. In a hardware implementation, the division between functional modules/units mentioned in the above description does not necessarily correspond to the division of physical components; for example, one physical component may have multiple functions, or one function or step may be performed by several physical components in cooperation. Some or all of the components may be implemented as software executed by a processor, such as a digital signal processor or microprocessor, or as hardware, or as an integrated circuit, such as an application specific integrated circuit. Such software may be distributed on computer readable media, which may include computer storage media (or non-transitory media) and communication media (or transitory media). The term computer storage media includes volatile and nonvolatile, removable and non-removable media implemented in any method or technology for storage of information such as computer readable instructions, data structures, program modules or other data, as is well known to those of ordinary skill in the art. Computer storage media includes, but is not limited to, RAM, ROM, EEPROM, flash memory or other memory technology, CD-ROM, Digital Versatile Disks (DVD) or other optical disk storage, magnetic cassettes, magnetic tape, magnetic disk storage or other magnetic storage devices, or any other medium which can be used to store the desired information and which can accessed by a computer. In addition, communication media typically embodies computer readable instructions, data structures, program modules or other data in a modulated data signal such as a carrier wave or other transport mechanism and includes any information delivery media as known to those skilled in the art.
Claims (10)
1. A power supply control system is characterized by comprising a power supply module, a power supply path and a radio frequency power amplifier, wherein the power supply module supplies power to the radio frequency power amplifier through the power supply path, a power supply control circuit is arranged on the power supply path, and the power supply control circuit comprises a voltage detection circuit and a switch device; the voltage detection circuit is provided with a first connecting end, a second connecting end and a signal output end, wherein the switching device is provided with a third connecting end, a fourth connecting end and a signal receiving end; the first connecting end is connected with the third connecting end, the second connecting end and the fourth connecting end are respectively connected with a power supply path, and the signal output end is connected with the signal input end; wherein:
the voltage detection circuit is configured to detect whether a voltage value passing through the voltage detection circuit is larger than a preset voltage threshold value or not, obtain a detection result, and output a power supply control signal according to the detection result;
the switching device is configured to control a conduction state of the power supply path according to the power supply control signal.
2. The system of claim 1, wherein the voltage detection circuit comprises a first branch and a second branch connected in parallel, wherein the first branch comprises an impedance device; the second circuit comprises a comparison circuit, wherein the output end of the comparison circuit is connected with the switching device;
wherein the comparison circuit is configured to compare a voltage value of the impedance device with a magnitude of the voltage threshold.
3. The circuit of claim 2, wherein the comparison circuit comprises a voltage comparator, wherein a positive input of the voltage comparator is connected to one end of the impedance device, a negative input of the voltage comparator is connected to the other end of the impedance device, and an output of the voltage comparator is connected to the switching device.
4. A system according to any one of claims 1 to 3, wherein:
the voltage detection circuit and the switch device are both arranged on a power supply path in the radio frequency front-end device; or;
one of the voltage detection circuit and the switch device is arranged on a power supply path in the radio frequency front-end device, and the other one of the voltage detection circuit and the switch device is arranged on a power supply path outside the radio frequency front-end device.
5. A power supply control method applied to the power supply control system according to any one of claims 1 to 4, the method comprising:
starting timing after the power supply path is in a disconnected state;
after the timing time reaches the preset time, controlling the power supply path to be in a conducting state;
and detecting whether the voltage value is greater than the voltage threshold value, and if the voltage value is less than or equal to the voltage threshold value, keeping the power supply path in a conducting state.
6. The method of claim 5, wherein detecting whether the voltage value is greater than the voltage threshold comprises:
continuously executing the detection operation of the voltage values for N times to obtain N voltage values, wherein N is an integer greater than or equal to 2;
and if the voltage value obtained by one detection operation in N times is less than or equal to the voltage threshold, keeping the power supply path in a conducting state.
7. The method of claim 6, further comprising:
and if the voltage value in N continuous detection operations in the N detection operations is larger than the voltage threshold value, controlling the power supply path to be in a disconnected state, wherein N is a positive integer smaller than or equal to N.
8. The method of claim 6, further comprising:
and stopping the operation of detecting the voltage value of the impedance device if the voltage value is greater than the voltage threshold value in N consecutive detection operations of the N detection operations.
9. A power control apparatus comprising a memory and a processor, wherein the memory has stored therein a computer program, and the processor is arranged to execute the computer program to perform the method of any of claims 5 to 8.
10. An electronic device comprising a power control system as claimed in any one of claims 1 to 4 or a power control apparatus as claimed in claim 9.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN117200826A (en) * | 2023-11-06 | 2023-12-08 | 唯捷创芯(天津)电子技术股份有限公司 | Overvoltage protection method for radio frequency front-end module and electronic equipment |
| WO2024099333A1 (en) * | 2022-11-09 | 2024-05-16 | 杭州阿里云飞天信息技术有限公司 | Power supply control circuit and server |
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