A power supply control circuit and an electronic device

Abstract

The present invention relates to a power supply control circuit and an electronic device. It includes: a power input terminal, a charge and discharge unit, a first switch unit, a second switch unit, a third switch unit, a fourth switch unit, and a controller module; the charge and discharge unit is connected to the power input terminal; the second switch unit is connected to the charge and discharge unit and the first switch unit, wherein the first switch unit is connected to the charge and discharge unit; the third switch unit is connected to the second switch unit and the power input terminal and is configured to conduct when the second switch unit conducts and the charge and discharge unit discharges; the fourth switch unit is connected to the third switch unit and the power input terminal and is configured to conduct when the third switch unit conducts to provide a power supply voltage; the controller module is connected to the third switch unit and the fourth switch unit and is configured to power on and work when the fourth switch unit conducts, and the controller module is configured to output a driving level to drive the third switch unit to conduct when powering on and working. Implementing the present invention can reduce power consumption.

Description

Technical Field

[0001] The present invention relates to the field of electronic technology, and more specifically, to a power supply control circuit and an electronic device. Background Art

[0002] The power consumption index in electronic devices has become an important index in the design of each circuit. Especially in small household appliances, which are usually powered by batteries, it is necessary to minimize their useless power consumption, such as standby power consumption, to extend the service life of the battery. Therefore, in circuit design, how to reduce the power consumption of electronic devices, especially to reduce their useless power consumption in the non-working state, is particularly important. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide a power supply control circuit and an electronic device for the above-mentioned partial technical defects of the prior art.

[0004] The technical solution adopted by the present invention to solve its technical problem is to construct a power supply control circuit, including: a power input terminal, a charge and discharge unit, a first switch unit, a second switch unit, a third switch unit, a fourth switch unit, and a controller module;

[0005] The charge and discharge unit is connected to the power input terminal and is configured to charge when there is power input at the power input terminal;

[0006] The second switch unit is connected to the charge and discharge unit and the first switch unit, and is configured to conduct when the first switch unit conducts, wherein the first switch unit is connected to the charge and discharge unit;

[0007] The third switch unit is connected to the second switch unit and the power input terminal, and is configured to conduct when the second switch unit conducts and the charge and discharge unit discharges;

[0008] The fourth switch unit is connected to the third switch unit and the power input terminal, and is configured to conduct when the third switch unit conducts to provide a power supply voltage;

[0009] The controller module is connected to the third switch unit and the fourth switch unit, and is configured to power on and work when the fourth switch unit conducts, and the controller module is configured to output a driving level to drive the third switch unit to conduct when powering on and working.

[0010] Preferably, the charge and discharge unit includes a first resistor R1 and a charging capacitor C1;

[0011] The first end of the first resistor R1 is connected to the power input terminal, the second end of the first resistor R1 is connected to the first end of the charging capacitor C1 and the second switching unit, and the second end of the charging capacitor C1 is grounded.

[0012] Preferably, the first resistor R1 is a high-impedance resistor.

[0013] Preferably, the first switching unit includes a trigger switch S1, a second resistor R3, and a third resistor R5; the first end of the second resistor R3 is connected to the charge and discharge unit, the second end of the second resistor R3 is connected to the first end of the third resistor R5, the second end of the third resistor R5 is connected to the first end of the trigger switch S1, and the second end of the trigger switch S1 is grounded.

[0014] Preferably, the second switching unit includes a first MOS transistor Q1, a fourth resistor R4, and a fifth resistor R7;

[0015] The first end of the first MOS transistor Q1 is connected to the charge and discharge unit and the first end of the second resistor R3, the second end of the first MOS transistor Q1 is connected to the first end of the fourth resistor R4, the second end of the fourth resistor R4 is connected to the first end of the fifth resistor R7 and the third switching unit, the second end of the fifth resistor R7 is grounded, and the third end of the first MOS transistor Q1 is connected to the second end of the second resistor R3 and the first end of the third resistor R5.

[0016] Preferably, the third switching unit includes a second MOS transistor Q3, a sixth resistor R15, and a seventh resistor R19;

[0017] The first end of the second MOS transistor Q3 is connected to the first end of the sixth resistor R15, the second end of the sixth resistor R15 is connected to the first end of the seventh resistor R19 and the fourth switching unit, the second end of the seventh resistor R19 is connected to the power input terminal, the second end of the second MOS transistor Q3 is grounded, and the third end of the second MOS transistor Q3 is connected to the second switching unit.

[0018] Preferably, the fourth switching unit includes a third MOS transistor Q2;

[0019] The first end of the third MOS transistor Q2 is connected to the power input terminal, the second end of the third MOS transistor is connected to the controller module, and the third end of the third MOS transistor is connected to the third switching unit.

[0020] Preferably, the controller module includes a power conversion circuit, an MCU control chip U1, and an isolation circuit;

[0021] The input end of the power conversion circuit is connected to the fourth switch unit, the output end of the power conversion circuit is connected to the first pin of the MCU control chip U1, the eighth pin of the MCU control chip U1 is connected to the first end of the isolation circuit, and the second end of the isolation circuit is connected to the third switch unit.

[0022] Preferably, the isolation circuit includes a first diode D2; the anode of the first diode D2 is connected to the eighth pin of the MCU control chip U1, and the cathode of the first diode D2 is connected to the third switch unit.

[0023] Preferably, it further includes a voltage detection unit connected to the controller module and the fourth switch unit.

[0024] Preferably, the voltage detection unit includes an eighth resistor R17, a ninth resistor R20, a tenth resistor R18, and a first capacitor C16; the first end of the eighth resistor R17 is connected to the fourth switch unit, the second end of the eighth resistor R17 is connected to the first end of the ninth resistor R20 and the first end of the tenth resistor R18, the second end of the ninth resistor R20 is grounded, and the second end of the tenth resistor R18 is connected to the controller module.

[0025] Preferably, a power-on detection unit connected to the controller module and the first switch unit is further included in a power supply control circuit of the present invention, and the power-on detection unit is configured to output a first detection level when the first switch unit is turned on, otherwise output a second detection level.

[0026] Preferably, the power-on detection unit includes an eleventh resistor R6, a second diode D1, and a second capacitor C2; the anode of the second diode D1 is connected to the controller module, the first end of the eleventh resistor R6, and the first end of the second capacitor C2, the second end of the eleventh resistor R6 is used to input a voltage, the second end of the second capacitor C2 is grounded, and the cathode of the second diode D2 is connected to the first switch unit and the second switch unit.

[0027] In addition, the present invention also constructs an electronic device including the power supply control circuit described in any one of the above.

[0028] Implementing a power supply control circuit and an electronic device of the present invention has the following beneficial effects: it can reduce power consumption. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The present invention will be further described below in conjunction with the drawings and embodiments. In the drawings:

[0030] Figure 1 is a logic block diagram of an embodiment of a power supply control circuit of the present invention;

[0031] Figure 2 It is a logic block diagram of another embodiment of a power supply control circuit of the present invention;

[0032] Figure 3 It is a logic block diagram of another embodiment of a power supply control circuit of the present invention;

[0033] Figure 4 It is a circuit schematic diagram of an embodiment of a power supply control circuit of the present invention. Detailed implementation manners

[0034] For a clearer understanding of the technical features, objectives, and effects of the present invention, the specific implementation manners of the present invention will now be described in detail with reference to the accompanying drawings.

[0035] Such as Figure 1As shown, in the first embodiment of a power supply control circuit according to the present invention, it includes: a power input terminal 110, a charge and discharge unit 120, a first switch unit 130, a second switch unit 140, a third switch unit 150, a fourth switch unit 160, and a controller module 170; the charge and discharge unit 120 is connected to the power input terminal 110 and is configured to charge when there is a power input at the power input terminal 110; the second switch unit 140 is connected to the charge and discharge unit 120 and the first switch unit 130 and is configured to conduct when the first switch unit 130 conducts, wherein the first switch unit 130 is connected to the charge and discharge unit 120; the third switch unit 150 is connected to the second switch unit 140 and the power input terminal 110 and is configured to conduct when the second switch unit 140 conducts and the charge and discharge unit 120 discharges; the fourth switch unit 160 is connected to the third switch unit 150 and the power input terminal 110 and is configured to conduct when the third switch unit 150 conducts to provide a power supply voltage; the controller module 170 is connected to the third switch unit 150 and the fourth switch unit 160 and is configured to power on and work when the fourth switch unit 160 conducts, and the controller module 170 is configured to output a driving level to drive the third switch unit 150 to conduct when powering on and working. Specifically, the power supply charges the charge and discharge unit 120 through the power input terminal 110. When the first switch unit 130 is triggered to conduct, the first switch unit 130 generates a driving voltage through the power input of the power input terminal 110 to drive the second switch unit 140 to conduct. At this time, the charge and discharge unit 120 starts to discharge through the conducting second switch unit 140. The discharge voltage of the charge and discharge unit 120 triggers the third switch unit 150 to conduct through the conducting second switch unit 140. The power input of the power input terminal 110 generates a trigger level through the conducting third switch unit 150 to trigger the fourth switch unit 160 to conduct. The third switch unit 150 is set to conduct when the charge and discharge unit 120 discharges to generate a discharge voltage. The fourth switch unit 160 is connected to the power input terminal 110. When the fourth switch unit 160 conducts, the power input of the power input terminal 110 supplies power to the controller module 170 through the conducting fourth switch unit 160, and the controller module 170 starts to power on and work. After the controller module 170 works, it outputs a driving level to drive the third switch unit 150 to maintain the conducting state. At this time, the third switch unit 150 will no longer be driven to conduct by the discharge voltage of the charge and discharge unit 120, that is, even if the discharge voltage of the charge and discharge unit 120 starts to decrease or even stops discharging, it does not affect the conducting state of the third switch unit 150. When the fourth switch unit 160 conducts, the subsequent working circuit connected to the fourth switch unit 160 can also be powered by the working voltage at the output end of the fourth switch unit 160. In some scenarios, the controller module 170 turns off the driving level according to different working modes to turn off the entire power supply.

[0036] Optionally, asFigure 4 As shown, the charge and discharge unit 120 includes a first resistor R1 and a charging capacitor C1; the first end of the first resistor R1 is connected to the power input terminal 110, the second end of the first resistor R1 is connected to the first end of the charging capacitor C1 and the second switch unit 140, and the second end of the charging capacitor C1 is grounded. Specifically, in the charge and discharge unit 120, the power input is limited by the first resistor R1, and after the current is limited, the charging capacitor C1 is charged. The first resistor R1 can be a high-impedance resistor to achieve an ideal current-limiting effect.

[0037] Optionally, the first switch unit 130 includes a trigger switch S1, a second resistor R3, and a third resistor R5; the first end of the second resistor R3 is connected to the charge and discharge unit 120, the second end of the second resistor R3 is connected to the first end of the third resistor R5, the second end of the third resistor R5 is connected to the first end of the trigger switch S1, and the second end of the trigger switch S1 is grounded. Specifically, the first switch unit 130 can use a manual trigger switch S1, which can be a general manually triggered start switch, such as a push-button switch, a key switch, etc. One end of the trigger switch S1 is grounded, and the other end is connected to the third resistor R5. When the trigger switch S1 is triggered, the third resistor R5 is grounded, and the second resistor R3 and the third resistor R5 form a conduction loop. The input voltage of the power input terminal 110 forms a voltage division at the connection end of the second resistor R3 and the third resistor R5 through the series loop of the second resistor R3 and the third resistor R5, and the second switch unit 140 can be driven to conduct through this voltage division.

[0038] Optionally, the second switching unit 140 includes a first MOS transistor Q1, a fourth resistor R4, and a fifth resistor R7; a first end of the first MOS transistor Q1 is connected to the charge and discharge unit 120 and a first end of the second resistor R3, a second end of the first MOS transistor Q1 is connected to a first end of the fourth resistor R4, a second end of the fourth resistor R4 is connected to a first end of the fifth resistor R7 and the third switching unit 150, a second end of the fifth resistor R7 is grounded, and a third end of the first MOS transistor Q1 is connected to a second end of the second resistor R3 and a first end of the third resistor R5. Specifically, in the second switching unit 140, the third end of the first MOS transistor Q1, which can also be understood as the gate of the first MOS transistor Q1, is driven to conduct through the first switching unit 130. After the first end and the second end of the first MOS transistor Q1 are conducted, the discharge voltage of the charge and discharge unit 120 forms a voltage division at the series connection end of the voltage division circuit formed by the fourth resistor R4 and the fifth resistor R7, and the third switching unit 150 is driven by this voltage division. The resistance values of the fourth resistor R4 and the fifth resistor R7 are set to be much smaller than the resistance value of the first resistor R1. In this way, when the input voltage VIN passes through the first resistor R1, the first MOS transistor Q1, the fourth resistor R4, and the fifth resistor R7, and when the first MOS transistor Q1 is conducted, when the charge and discharge unit 120 does not discharge, since the resistance value of the first resistor R1 is much larger than the resistance values of the fourth resistor R4 and the fifth resistor R7, the voltage after voltage division by the fourth resistor R4 and the fifth resistor R7 is not enough to drive the third switching unit 150 to conduct. Only when the charge and discharge unit 120 discharges, the discharge voltage can be high enough after voltage division by the fourth resistor R4 and the fifth resistor R7 to drive the third switching unit 150 to conduct.

[0039] Optionally, the third switching unit 150 includes a second MOS transistor Q3, a sixth resistor R15, and a seventh resistor R19; a first end of the second MOS transistor Q3 is connected to a first end of the sixth resistor R15, a second end of the sixth resistor R15 is connected to a first end of the seventh resistor R19 and the fourth switching unit 160, a second end of the seventh resistor R19 is connected to the power input terminal 110, a second end of the second MOS transistor Q3 is grounded, and a third end of the second MOS transistor Q3 is connected to the second switching unit 140. Specifically, the second switching unit 140 drives the second MOS transistor Q3 to conduct. After the second MOS transistor Q3 is conducted, the sixth resistor R15 and the seventh resistor R19 form a series voltage division circuit, and the input voltage of the power input terminal 110 forms a voltage division at the connection end of the sixth resistor R15 and the seventh resistor R19 after voltage division by the sixth resistor R15 and the seventh resistor R19, and this voltage division drives the fourth switching unit 160 to conduct.

[0040] Optionally, the fourth switching unit 160 includes a third MOS transistor Q2. The first end of the third MOS transistor Q2 is connected to the power input terminal 110, the second end of the third MOS transistor Q2 is connected to the controller module 170, and the third end of the third MOS transistor Q2 is connected to the third switching unit 150. Specifically, in the fourth switching unit 160, when the third end of its third MOS transistor Q2, which can also be understood as the gate of the third MOS transistor Q2, is driven to conduct through the third switching unit 150, the first end and the second end of the third MOS transistor Q2 are conducted, and the power input from the power input terminal 110 enters the subsequent circuit to provide the working voltage for the subsequent circuit.

[0041] Optionally, the controller module 170 includes a power conversion circuit, an MCU control chip U1, and an isolation circuit. The input end of the power conversion circuit is connected to the fourth switching unit 160, the output end of the power conversion circuit is connected to the first pin of the MCU control chip U1, the eighth pin of the MCU control chip U1 is connected to the first end of the isolation circuit, and the second end of the isolation circuit is connected to the third switching unit 150. Among them, in the controller module 170, the output power of the fourth switching unit 160 can be voltage-converted through the power conversion circuit to obtain the working voltage required for the operation of the MCU control chip U1. The MCU control chip outputs a driving level through its eighth pin, and forms isolation for the input of the third switching unit 150 through the second switching unit 140 through the isolation unit to prevent the input of the second switching unit 140 to the third switching unit 150 from causing signal backflow to the MCU control chip U1. The power conversion circuit includes a power conversion chip U2 and its peripheral circuits.

[0042] Optionally, the isolation circuit includes a first diode D2. The anode of the first diode D2 is connected to the eighth pin of the MCU control chip U2, and the cathode of the first diode D2 is connected to the third switching unit 150. Specifically, the signal of the second switching unit 140 can be isolated through the first diode D2.

[0043] Optionally, as Figure 2 shown, the power supply control circuit of the present invention further includes a voltage detection unit 180 connecting the controller module 170 and the fourth switching unit 160. The voltage detection unit 180 is connected to the fourth switching unit 160, and is used to detect the power output of the power input terminal 110. The controller module 170 obtains this detection result to control the output of its driving level according to this detection result. Among them, when the input voltage of the power input terminal 110 is too low, the controller module 170 can turn off its driving level to turn off the third switching unit 150, and finally achieve the purpose of turning off this power output.

[0044] Optionally, the voltage detection unit 180 includes an eighth resistor R17, a ninth resistor R20, a tenth resistor R18, and a first capacitor C16; a first end of the eighth resistor R17 is connected to the fourth switch unit 160 and an input end of the power conversion circuit, a second end of the eighth resistor R17 is connected to a first end of the ninth resistor R20 and a first end of the tenth resistor R18, a second end of the ninth resistor R20 is grounded, and a second end of the tenth resistor R18 is connected to the controller module 170; specifically, in the voltage detection unit 180, a feedback voltage is obtained through a voltage division circuit formed by the eighth resistor R17 and the ninth resistor R20, and the feedback voltage enters the controller module 170 after being limited in current by the tenth resistor R18 and filtered by the first capacitor C16.

[0045] Optionally, as Figure 3 shown, the power supply control circuit of the present invention further includes a power-on detection unit 190 connected to the controller module 170 and the first switch unit 130. The power-on detection unit 190 is configured to output a first detection level when the first switch unit 130 is turned on, and otherwise output a second detection level. Specifically, the power-on detection unit 190 is connected to the first switch unit 130 to confirm the working state of the first switch unit 130 according to the detected voltage. When the first switch unit 130 is triggered to be turned on, the power-on detection unit 190 correspondingly obtains the first detection level. When the controller module 170 obtains the first detection level, it maintains the output drive level to drive the third switch unit 150 to be turned on. When the first switch unit 130 is triggered to be turned off, the power-on detection unit 190 correspondingly obtains the second detection level. When the controller module 170 obtains the second detection level, it shuts off the input of the drive level to turn off the third switch unit 150, so as to achieve the purpose of finally turning off the power output. In an embodiment, in the controller module 170, the MCU control chip U1 receives the detection level output by the power-on detection unit 190 through its fifth pin.

[0046] Optionally, the power-on detection unit 190 includes an eleventh resistor R6, a second diode D1, and a second capacitor C2; the anode of the second diode D1 is connected to the controller module 170, the first end of the eleventh resistor R6, and the first end of the second capacitor C2. The second end of the eleventh resistor R6 is used to input a voltage, the second end of the second capacitor C2 is grounded, and the cathode of the second diode D1 is connected to the first switch unit 130 and the second switch unit 140. Specifically, in one embodiment, in the power-on detection unit 190, the eleventh resistor R6 is a pull-up resistor, one end of which is connected to a voltage. When the first switch unit 130 is turned on, the second diode D1 is turned on, and the anode level of the second diode D1 is pulled low. At this time, the controller module 170 obtains a low level to determine that the first switch unit 130 has been started and turned on. When the first switch unit 130 is turned off, due to the pull-up effect of the pull-up resistor, that is, the eleventh resistor R6, the anode of the second diode D1 forms a high level. At this time, when the controller module 170 obtains this high level, it determines that the first switch unit 130 is turned off.

[0047] In one embodiment, when the switch S1 in the first switch unit 130 is normally closed, its standby power consumption can be very small, and its static current is less than 10 uA.

[0048] In addition, an electronic device of the present invention includes the power supply control circuit of any one of the above. It supplies power to the internal working circuit through the power supply control circuit, and the electronic device can be common small household appliances and other electronic products.

[0049] It can be understood that the above embodiments only represent the preferred embodiments of the present invention. The description is relatively specific and detailed, but it should not be construed as a limitation to the scope of the patent of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, the above technical features can be freely combined, and several deformations and improvements can also be made, which all belong to the protection scope of the present invention. Therefore, all equivalent transformations and modifications made to the scope of the claims of the present invention shall fall within the scope covered by the claims of the present invention.

Claims

1. A power supply control circuit, characterized in that, Comprising: A power input terminal, a charge and discharge unit, a first switch unit, a second switch unit, a third switch unit, a fourth switch unit, and a controller module; The charge and discharge unit is connected to the power input terminal and is configured to charge when there is power input at the power input terminal; The second switch unit is connected to the charge and discharge unit and the first switch unit and is configured to conduct when the first switch unit conducts, wherein the first switch unit is connected to the charge and discharge unit; The third switch unit is connected to the second switch unit and the power input terminal and is configured to conduct when the second switch unit conducts and the charge and discharge unit discharges; The fourth switch unit is connected to the third switch unit and the power input terminal and is configured to conduct when the third switch unit conducts to provide a supply voltage; The controller module is connected to the third switch unit and the fourth switch unit and is configured to power on and operate when the fourth switch unit conducts, and the controller module is configured to output a driving level to drive the third switch unit to maintain conduction when powering on and operating, and at the same time, the third switch unit is no longer driven to conduct by the discharge voltage of the charge and discharge unit.

2. The power supply control circuit according to claim 1, wherein The charge and discharge unit includes a first resistor R1 and a charging capacitor C1; The first end of the first resistor R1 is connected to the power input terminal, the second end of the first resistor R1 is connected to the first end of the charging capacitor C1 and the second switch unit, and the second end of the charging capacitor C1 is grounded.

3. The power supply control circuit according to claim 2, characterized in that, The first resistor R1 is a high-impedance resistor.

4. The power supply control circuit according to claim 1, wherein, The first switch unit includes a trigger switch S1, a second resistor R3, and a third resistor R5; the first end of the second resistor R3 is connected to the charge and discharge unit, the second end of the second resistor R3 is connected to the first end of the third resistor R5, the second end of the third resistor R5 is connected to the first end of the trigger switch S1, and the second end of the trigger switch S1 is grounded.

5. The power supply control circuit according to claim 4, wherein The second switch unit includes a first MOS transistor Q1, a fourth resistor R4, and a fifth resistor R7; The first end of the first MOS transistor Q1 is connected to the charge and discharge unit and the first end of the second resistor R3, the second end of the first MOS transistor Q1 is connected to the first end of the fourth resistor R4, the second end of the fourth resistor R4 is connected to the first end of the fifth resistor R7 and the third switch unit, the second end of the fifth resistor R7 is grounded, and the third end of the first MOS transistor Q1 is connected to the second end of the second resistor R3 and the first end of the third resistor R5.

6. The power supply control circuit according to claim 1, wherein The third switch unit includes a second MOS transistor Q3, a sixth resistor R15, and a seventh resistor R19; The first end of the second MOS transistor Q3 is connected to the first end of the sixth resistor R15, the second end of the sixth resistor R15 is connected to the first end of the seventh resistor R19 and the fourth switch unit, the second end of the seventh resistor R19 is connected to the power input terminal, the second end of the second MOS transistor Q3 is grounded, and the third end of the second MOS transistor Q3 is connected to the second switch unit.

7. The power supply control circuit according to claim 1, wherein The fourth switch unit includes a third MOS transistor Q2; The first terminal of the third MOS transistor Q2 is connected to the power input terminal, the second terminal of the third MOS transistor is connected to the controller module, and the third terminal of the third MOS transistor is connected to the third switching unit.

8. The power supply control circuit according to claim 1, characterized in that The controller module includes a power conversion circuit, an MCU control chip U1, and an isolation circuit; The input terminal of the power conversion circuit is connected to the fourth switching unit, the output terminal of the power conversion circuit is connected to the first pin of the MCU control chip U1, the eighth pin of the MCU control chip U1 is connected to the first terminal of the isolation circuit, and the second terminal of the isolation circuit is connected to the third switching unit.

9. The power supply control circuit according to claim 8, wherein The isolation circuit includes a first diode D2; the anode of the first diode D2 is connected to the eighth pin of the MCU control chip U1, and the cathode of the first diode D2 is connected to the third switching unit.

10. The power supply control circuit according to claim 1, wherein It further includes a voltage detection unit connecting the controller module and the fourth switching unit.

11. The power supply control circuit according to claim 10, wherein The voltage detection unit includes an eighth resistor R17, a ninth resistor R20, a tenth resistor R18, and a first capacitor C16; the first terminal of the eighth resistor R17 is connected to the fourth switching unit, the second terminal of the eighth resistor R17 is connected to the first terminal of the ninth resistor R20 and the first terminal of the tenth resistor R18, the second terminal of the ninth resistor R20 is grounded, and the second terminal of the tenth resistor R18 is connected to the controller module.

12. The power supply control circuit according to claim 1, wherein, It further includes a power-on detection unit connecting the controller module and the first switching unit, and the power-on detection unit is configured to output a first detection level when the first switching unit is turned on, otherwise output a second detection level.

13. The power supply control circuit according to claim 12, wherein, The power-on detection unit includes an eleventh resistor R6, a second diode D1, and a second capacitor C2; the anode of the second diode D1 is connected to the controller module, the first terminal of the eleventh resistor R6, and the first terminal of the second capacitor C2, the second terminal of the eleventh resistor R6 is used to input a voltage, the second terminal of the second capacitor C2 is grounded, and the cathode of the second diode D2 is connected to the first switching unit and the second switching unit.

14. An electronic device, characterized in that, It includes the power supply control circuit according to any one of claims 1 to 13.

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