CN104953649B - A power supply circuit and electronic equipment - Google Patents

Abstract

The embodiment of the invention discloses a power supply circuit and electronic equipment, wherein the power supply circuit comprises: the power supply is used for supplying power to the processor, the acquisition circuit is used for acquiring an operation signal input by a user and outputting the acquired operation signal to the processor, the processor is used for detecting whether the electronic equipment receives the operation signal input by the user within preset time or whether a power amplifier in the electronic equipment works within preset time, when the processor does not receive the operation signal input by the user within the preset time and the power amplifier in the electronic equipment does not work, a first control signal is sent to the power supply, and the first control signal is used for controlling the power supply path of the processor to be disconnected. By adopting the embodiment of the invention, when the electronic equipment does not receive the operation signal input by the user within the preset time and the power amplifier in the electronic equipment does not work, the power supply is not carried out on the processor of the electronic equipment, so that the electric quantity consumption of the electronic equipment is reduced.

Description

A power supply circuit and electronic equipment

technical field

The invention relates to the field of electronic circuits, in particular to a power supply circuit and electronic equipment.

Background technique

Battery-powered systems are widely used in electronic products. Headphone power amplifiers usually use a microprocessor (Micro Controller Unit, MCU) chip to detect external operations in the standby state (such as plugging in a charger, requesting power display, playing music when starting up, etc.) etc.), when the MCU detects these external operations and executes or coordinates to complete the requested tasks, when the headphone power amplifier is in the standby state, the power supply still supplies power to the MCU, thereby continuously consuming power, so the continuous power supply in the standby state has caused Unnecessary power consumption.

Contents of the invention

An embodiment of the present invention provides a power supply circuit and an electronic device. When the electronic device does not receive an operation signal input by the user within a preset time and the power amplifier in the electronic device is not working, no power is supplied to the processor of the electronic device. , reducing the power consumption of electronic devices.

The first aspect of the embodiments of the present invention provides a power supply circuit, which is applied to an electronic device to supply power to a power amplifier in the electronic device. The power supply circuit includes a power supply, an acquisition circuit, and a processor. The power supply is used for Powering the processor, the acquisition circuit is used to acquire an operation signal input by the user, and output the acquired operation signal to the processor, and the processor is used to detect that the electronic device is Whether the operation signal input by the user is received within the preset time or whether the power amplifier in the electronic device is working within the preset time, when the processor does not receive the operation signal input by the user within the preset time and the When the power amplifier in the electronic device is not working, a first control signal is sent to the power supply, and the first control signal is used to control disconnection of a power supply path from the power supply to the processor.

In a first possible implementation manner of the first aspect, the obtaining circuit is further configured to obtain an operation signal input by the user after the power supply path of the power supply to the processor is disconnected, and obtain the first operation signal according to the operation signal. Two control signals, and output the second control signal to the power supply, so that the power supply starts to supply power to the processor, and the processor is also used to perform the operation after receiving the power from the power supply The operation corresponding to the signal.

With reference to the first possible implementation manner of the first aspect, in a second possible implementation manner of the first aspect, the power supply circuit further includes a voltage divider circuit, an input end of the voltage divider circuit is electrically connected to the acquisition circuit, the output ends of which are electrically connected to the power supply and the processor, respectively, for obtaining the second control signal and the third control signal according to the operation signal output by the acquisition circuit, and converting the second control signal output to the power supply, so that the power supply starts to supply power to the processor, and output the third control signal to the processor, so that the processor executes the The operation corresponding to the third control signal.

With reference to the first possible implementation of the first aspect, in a third possible implementation of the first aspect, the power supply circuit further includes a conversion circuit, one end of the conversion circuit is electrically connected to the power supply, and the other end of the conversion circuit is electrically connected to the power supply. The processor is connected to convert the electric energy output by the power supply into the electric energy required by the processor.

With reference to the third possible implementation of the first aspect, in the fourth possible implementation of the first aspect, the conversion circuit includes a DC voltage to DC voltage circuit, a low-dropout linear voltage regulator circuit, and an electronic switch circuit. at least one or a combination of several.

With reference to the third possible implementation of the first aspect, in a fifth possible implementation of the first aspect, the conversion circuit further includes an enabling terminal, and the enabling terminal of the conversion circuit is used to receive the The electric energy output by the power supply is used as the enable signal of the conversion circuit, and the electric energy output by the power supply is converted into the electric energy required by the processor under the control of the enable signal.

With reference to the first possible implementation manner of the first aspect, in a sixth possible implementation manner of the first aspect, the power supply circuit further includes a signal processing circuit, and the signal processing circuit is used to process the operation signal input by the user. At least one of level change, phase change, or delay processing, or edge extraction, or pulse extraction processing is performed, and the processed operation signal is used as the second control signal.

With reference to the first possible implementation manner of the first aspect, in a seventh possible implementation manner of the first aspect, the operation signal input by the user acquired by the acquisition circuit after the power supply path of the processor is disconnected includes One or a combination of knob power-on signal, switch press signal and external power supply signal.

With reference to the first possible implementation manner of the first aspect, in an eighth possible implementation manner of the first aspect, the operation signal input by the user acquired by the acquisition circuit after the power supply path of the processor is disconnected includes At least one or a combination of externally generated level signals, externally generated level transition edge signals, and externally generated pulse signals.

The second aspect of the embodiments of the present invention discloses an electronic device, the electronic device includes a power amplifier, and the electronic device further includes the power supply circuit in any of the foregoing implementation manners, where the power supply circuit is used to supply power to the power amplifier.

Adopting the embodiment of the present invention has the following beneficial effects: the power supply circuit provided by the present invention monitors and executes electronic The processor of the external operation of the device stops the power supply, and after the electronic device receives the external signal, the external signal is used as the power enable signal on the one hand to control the power module of the processor to be turned on, and on the other hand, it is sent to the processor so that the processor Respond in time and perform corresponding external operations after being powered on, thereby reducing the continuous power consumption of electronic devices.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the embodiments and the accompanying drawings that need to be used in the description. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention , for those skilled in the art, other drawings can also be obtained according to these drawings on the premise of not paying creative work.

FIG. 1 is a schematic structural diagram of a first embodiment of a power supply circuit provided by an embodiment of the present invention;

FIG. 2 is a schematic structural diagram of a second embodiment of a power supply circuit provided by an embodiment of the present invention;

FIG. 3 is a schematic structural diagram of a third embodiment of a power supply circuit provided by an embodiment of the present invention;

FIG. 4 is a schematic structural diagram of a fourth embodiment of a power supply circuit provided by an embodiment of the present invention;

FIG. 5 is a schematic circuit diagram of a fifth embodiment of a power supply circuit provided by an embodiment of the present invention.

detailed description

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

The power supply circuit of the embodiment of the present invention uses the power supply, the acquisition circuit and the processor to control the power supply to the processor when the processor detects that it has not received an external operation signal for a period of time and the power amplifier in the electronic device is not working. Power off reduces unnecessary power consumption of electronic equipment and saves power.

Referring to FIG. 1 , it is a schematic structural diagram of a first embodiment of a power supply circuit provided by an embodiment of the present invention. As shown in FIG. 1, the power supply circuit 1 described in this embodiment is applied to an electronic device (not shown) to supply power for a power amplifier in the electronic device. In this embodiment, the electronic device can for headphones. The power supply circuit 1 includes a power supply 11 , an acquisition circuit 13 and a processor 15 . The power supply 11 is used to supply power to the processor 15, the acquisition circuit 13 is used to acquire the operation signal input by the user, and output the acquired operation signal to the processor 15, and the processor 15 It is used to detect whether the electronic device receives an operation signal input by the user within the preset time or whether the power amplifier in the electronic device is working within the preset time, when the processor 15 is within the preset time When no operation signal input by the user is received and the power amplifier in the electronic device is not working, a first control signal is sent to the power supply 11, and the first control signal is used to control to disconnect the power supply 11 to the power supply 11. The power supply path of the processor 15.

Specifically, the power supply 11 can be an external power supply or a battery, and when the processor receives an operation signal input by the user or the power amplifier in the electronic device is working within the preset time, the The power supply 11 supplies power to the processor 15. The manner in which the power supply 11 provides power to the processor 15 may be direct power supply, or power supply after being processed by an intermediate link. When the processor 15 does not receive an operation signal input by the user within the preset time and the power amplifier in the electronic device is not working, the power supply 11 disconnects the power supply path of the processor 15 to Power supply to the processor 15 is stopped.

It should be noted that when the processor 15 receives an operation signal input by the user within the preset time or the power amplifier in the electronic device is working, the acquisition circuit 13 outputs the acquired operation signal To the processor 15, the processor 15 executes the operation corresponding to the operation signal input by the acquisition circuit 13. When the processor 15 does not receive an operation signal input by the user within the preset time and the power amplifier in the electronic device is not working, the acquisition circuit 13 outputs the acquired operation signal to the The power supply 11, the operation signal is used as the enable signal of the power supply 11, and the power supply 11 is turned on to supply power to the processor 15. On the other hand, the acquisition circuit 13 outputs the acquired operation signal to the The processor 15, so that the processor 15 executes the operation corresponding to the operation signal after receiving power.

It should be noted that, during the actual working process of the power supply circuit 1, the processor 15 may be connected to the housing of the electronic device through the housing interface, if the housing of the electronic device does not receive The user inputs an operation signal and the power amplifier in the electronic device is not working, then the processor 15 sends the first control signal to the power supply 11, and controls to disconnect the power supply 11 to the processor 15. The power supply path is used to disconnect the power supply to the processor 15.

The power supply circuit provided by the present invention detects the working state of the electronic equipment, and when it detects that the electronic equipment does not receive the operation signal input by the user within the preset time and the power amplifier in the electronic equipment is not working, it cuts off the power supply in time. The power supply of the processor reduces the power consumption of the electronic equipment and effectively saves electric energy.

Referring to FIG. 2 , it is a schematic structural diagram of a second embodiment of the power supply circuit provided by the present invention. The power supply circuit 1 described in this embodiment is applied to an electronic device (not shown in the figure) for supplying power to a power amplifier in the electronic device. In this embodiment, the electronic device may be an earphone. FIG. 2 is a further description of the power supply circuit shown in FIG. 1 . As shown in FIG. 2 , the power supply circuit 1 includes a power supply 11 , an acquisition circuit 13 and a processor 15 . Wherein, the power supply 11 and the processor 15 can refer to the circuit structure shown in FIG. 1 .

The acquisition circuit 13 acquires the operation signal input by the user after the power supply path from the power supply 11 to the processor 15 is disconnected, obtains a second control signal according to the operation signal, and outputs the second control signal to The power supply 11 is used to enable the power supply 11 to start to supply power to the processor 15, and the processor 15 is also used to execute the operation corresponding to the operation signal after receiving the power from the power supply 11.

In specific implementation, the shell interface of the acquisition circuit 13 in the power supply circuit 1 provided by the present invention can be connected to the housing of the electronic device, so that the acquisition circuit 13 can detect and acquire the operation input by the user through the housing of the electronic device at any time. Signal.

Preferably, the operation signals input by the user acquired by the acquisition circuit 13 after the power supply path of the processor 15 is disconnected may include but not limited to: a knob power-on signal, a switch press signal and an external power plug-in signal. The operation events corresponding to the operation signal may include but not limited to: turn on the machine by means of knobs, buttons, switches, etc. to prepare for playing music events, events such as charger power entering or connecting to other external power sources, requests to display battery power by lightly touching switches, etc. Or status events and requests to change the power supply relationship or status events with other devices by means of switches.

More preferably, the operation signal acquired by the acquisition circuit 13 may include but not limited to: an externally generated level signal, an externally generated level transition edge signal, and an externally generated pulse signal.

More preferably, the processor 15 may include but not limited to a microprocessor (Micro Controller Unit, MCU).

When the power supply circuit provided by the present invention detects that the electronic device does not receive the operation signal input by the user within the preset time and the power amplifier in the electronic device is not working, it cuts off the power supply to the processor in time, reducing the power consumption of the electronic device. power consumption, which effectively saves electric energy, and when the power supply is not supplying power to the processor, when the acquisition circuit acquires an external operation signal, on the one hand, it uses the acquired external operation signal as the enable signal of the power supply to start the power supply Provide power to the processor. On the other hand, the acquisition circuit uses the acquired external operation signal as the operation signal of the processor. When the processor receives the power of the power supply, it performs the operation corresponding to the external operation signal. Therefore, when the power supply is not on the processor When supplying power, the acquisition circuit uses an external operation signal to activate the power supply to supply power to the processor, and the processor can normally execute the operation signal after being powered.

Referring to FIG. 3 , it is a schematic structural diagram of a third embodiment of the power supply circuit provided by the present invention. The power supply circuit 1 described in this embodiment is applied to an electronic device (not shown in the figure) for supplying power to a power amplifier in the electronic device. In this embodiment, the electronic device may be an earphone. FIG. 3 is a further description of the power supply circuit shown in FIG. 1 . As shown in FIG. 3 , the power supply circuit 1 includes a power supply 11 , an acquisition circuit 13 , a processor 15 and a signal processing circuit 17 . Wherein, the power supply 11 , the acquisition circuit 13 and the processor 15 may refer to the circuit structure shown in FIG. 1 or 2 .

The signal processing circuit 17 performs at least one of changing the level, or changing the phase, or delay processing, or extracting the jump edge, or extracting the pulse processing for the operation signal input by the user, and uses the processed operation signal as the first Two control signals.

Specifically, the signal processing circuit 17 has an input end connected to the acquisition circuit 13, an output end connected to the power supply 11, and the other end connected to the processor 15, and the operation signal output by the acquisition circuit 13 is changed to Leveling, or changing the phase, or delay processing, or extracting the jump edge, or extracting the pulse processing, and outputting the processed operation signal as the second operation signal to the power supply 11, so that the power supply 11 Start to supply power to the processor 15, and output an operation signal to the processor 15, so that the processor 15 executes the operation signal corresponding to the acquisition circuit 13 after receiving the electric energy of the power supply 11. operate.

When the power supply circuit provided by the present invention detects that the electronic device does not receive an operation signal input by the user within a preset time and the power amplifier in the electronic device is not working, it cuts off the power supply to the processor, reducing the power of the electronic device. consumption, which effectively saves electric energy, and when the power supply is not supplying power to the processor, the acquisition circuit will input the acquired external operation signal to the signal processing circuit, so as to change the level and change the phase of the operation signal. On the one hand, the processed operation signal is used as the enable signal of the power supply to start the power supply to supply power to the processor; on the other hand, it is used as the operation signal of the processor. When the processor receives the power of the power supply, it executes the operation corresponding to the external operation signal , so when the power supply is not supplying power to the processor, the acquisition circuit uses an external operation signal to start the power supply to supply power to the processor, and the processor can normally execute the operation signal after being powered on.

Referring to FIG. 4 , it is a schematic structural diagram of a fourth embodiment of the power supply circuit provided by the present invention. The power supply circuit 1 described in this embodiment is applied to an electronic device (not shown in the figure) for supplying power to a power amplifier in the electronic device. In this embodiment, the electronic device may be an earphone. FIG. 4 is a further description of the power supply circuit shown in FIG. 1 . As shown in FIG. 4 , the power supply circuit 1 includes a power supply 11 , an acquisition circuit 13 , a processor 15 , a voltage dividing circuit 19 and a conversion circuit 111 . Wherein, the power supply 11 , the acquisition circuit 13 and the processor 15 can refer to the circuit structure shown in FIG. 1 or 2 .

The input end of the voltage divider circuit 19 is electrically connected to the acquisition circuit 13, and the output end is electrically connected to the power supply 11 and the processor 15, respectively, for obtaining the A second control signal and a third control signal, and output the second control signal to the power supply 11, so that the power supply 11 starts to supply power to the processor 15, and outputs the third control signal to the power supply 11 the processor 15, so that the processor 15 executes the operation corresponding to the third control signal after receiving the electric energy of the power source 11.

Preferably, the voltage divider circuit 19 divides the signal that does not carry operation information among the operation signals output by the acquisition circuit 13 to the second control signal, and divides the signal that carries operation information among the operation signals to the second control signal. Three control signals, or, the voltage divider circuit 19 divides the operation signal output by the acquisition circuit 13 into two signals according to a preset ratio, which are respectively the second control signal and the third control signal, specifically implemented Among them, the voltage divider circuit 19 may include a first resistor 191 and a second resistor 193 connected in series in sequence, and one end of the first resistor 191 is connected to the power supply 11, and the other end is connected to the second resistor 193 and the processing The common node of the processor 15, one end of the second resistor 193 is connected to the acquisition circuit 13, and the other end is connected to the common node of the first resistor 191 and the processor 15, by changing the first resistor 191 and the The resistance value of the second resistor 193 can change the voltage division ratio between the first resistor 191 and the second resistor 193, thereby changing the magnitude of the second control signal and the third control signal.

One end of the conversion circuit 111 is electrically connected to the power supply 11 , and the other end is electrically connected to the processor 15 , and converts the electric energy output by the power supply 11 into the electric energy required by the processor 15 .

Preferably, the conversion circuit 111 may include but not limited to: a DC voltage to DC voltage circuit (DirectCurrent-Direct Current Conversion, DC/DC), a low dropout regulator circuit (Low Dropout Regulator, LDO) and an electronic switch circuit.

More preferably, the conversion circuit 111 may also include an enable terminal, the enable terminal of the conversion circuit 111 receives the electric energy output by the power supply 11, and uses the electric energy output by the power supply 11 as the power output of the conversion circuit 111 An enabling signal, converting the electric energy output by the power supply 11 into electric energy required by the processor 15 under the control of the enabling signal.

When the power supply circuit provided by the present invention detects that the electronic device does not receive the operation signal input by the user within the preset time and the power amplifier in the electronic device is not working, it cuts off the power supply to the processor, reducing the standby state of the electronic device. The lower power consumption effectively saves electric energy, and when the power supply is not supplying power to the processor, the acquisition circuit inputs the obtained external operation signal into the voltage divider circuit to divide the operation signal, and the divided The second control signal is used as the enable signal of the power supply to start the power supply to supply power to the processor, and the third control signal after voltage division is used as the operation signal of the processor. When the processor receives the power of the power supply, it executes the corresponding external operation signal Therefore, when the power supply is not supplying power to the processor, the acquisition circuit uses an external operation signal to start the power supply to supply power to the processor, and the processor can normally execute the operation signal after being powered on.

Referring to FIG. 5 , it is a specific schematic circuit diagram of a fifth embodiment of the power supply circuit provided by the present invention. The power supply circuit 1 described in this embodiment is applied to an electronic device (not shown in the figure) for supplying power to a power amplifier in the electronic device. In this embodiment, the electronic device may be an earphone. As shown in FIG. 5 , the power supply circuit 1 includes a power supply 11 , an acquisition circuit 13 and a processor 15 .

In FIG. 5 , TPS63051 is a chip corresponding to the power supply 11 (supplying power to the MCU), and the MCU is a chip corresponding to the processor 15 . External operation signals may include knob power-on events, tact switch press events, and external power plug-in events.

For the turn-on event of the knob, the acquisition circuit 13 obtains a high-level external signal. In FIG. 5, the corresponding turn_on terminal obtains a high-level signal. Turn on the enabling terminal EN of the power supply 11 at the same time, so that the power supply 11 supplies power to the processor 15, and on the other hand, the high level signal obtained at the turn_on terminal will also be input to the processor 15, so as to report the turn-on event of the knob to the processor 15, so as to Make the processor 15 execute a power-on event.

For the light touch switch pressing event (this circuit is actually used for power display request and switching external power supply state request), the acquisition circuit 13 obtains a low-level external signal, and the acquisition circuit 13 performs the low-level external signal acquired. Signal processing, transforming the low-level signal into a high-level signal, and obtaining a high level corresponding to the touch_on terminal in Figure 5, and turning on the enabling terminal EN of the power supply 11 through the diode D2 and the resistor R5 for the high-level signal, So that the power supply 11 supplies power to the processor 15, on the other hand, the acquisition circuit 13 inputs the acquired low-level signal to the processor 15, so as to report the light touch event to the processor 15, so that the processor 15 performs the corresponding operation .

For the event of plugging in an external power supply, the acquisition circuit 13 obtains an external signal connected to the external power supply, and the corresponding Vbus_on terminal in FIG. Open the enable end EN of the power supply 11, so that the power supply 11 supplies power to the processor 15, and on the other hand, an external signal is sent to the processor 15, so as to report to the processor 15 an event of plugging in an external power supply, so that the processor 15 executes the corresponding operation.

After the processor 15 obtains power and starts to work, a high-level signal is generated to keep the power supply 11 enabled, so as to ensure that the processor 15 can continue to receive power from the power supply 11 after the enabling control of the power supply 11 ends.

With the embodiment of the present invention, when the power supply circuit detects that the electronic device does not receive the operation signal input by the user within the preset time and the power amplifier in the electronic device is not working, it cuts off the power supply to the processor. When the electronic device receives When the external signal is received, the external signal is used to start the power supply to supply power to the processor, so that the processor can perform corresponding operations after being powered on, so that when the power supply does not supply power to the processor, the processor can also work normally, effectively reducing the electronic The power consumption of the device.

To sum up, with the embodiment of the present invention, when the electronic device does not receive an operation signal input by the user within a preset time and the power amplifier in the electronic device is not working, the processor that monitors and executes the external operation of the electronic device stops Power supply, and after the electronic device receives the external signal, the external signal is used as the power enable signal on the one hand to control the power module of the processor to be turned on, and on the other hand, it is sent to the processor so that the processor can respond in time after being powered on and Execute the corresponding external operation, thereby reducing the power continuously consumed by the electronic device.

What is disclosed above is only a preferred embodiment of the present invention, and certainly cannot limit the scope of rights of the present invention with this. Those of ordinary skill in the art can understand the whole or part of the process of realizing the above-mentioned embodiment, and make according to the claims of the present invention The equivalent changes still belong to the scope covered by the invention.

Claims (8)

1. A power supply circuit, which is applied in an electronic device to supply power to a power amplifier in the electronic device, wherein the power supply circuit includes a power supply, an acquisition circuit and a processor, and the power supply is used to provide power for the power amplifier in the electronic device The processor is powered, and the acquisition circuit is used to acquire the operation signal input by the user, and output the acquired operation signal to the processor, and the processor is used to detect whether the electronic device is Whether the operation signal input by the user is received or whether the power amplifier in the electronic device is working within the preset time, when the processor does not receive the operation signal input by the user within the preset time and the electronic device When the power amplifier is not working, send a first control signal to the power supply, the first control signal is used to control to disconnect the power supply path from the power supply to the processor, when the processor is in the preset When an operation signal input by a user is received within a certain period of time or a power amplifier in the electronic device is working, the power supply supplies power to the processor; The obtaining circuit is also used to obtain an operation signal input by the user after the power supply path from the power supply to the processor is disconnected, obtain a second control signal according to the operation signal, and output the second control signal to the power supply, so that the power supply starts to supply power to the processor, and the processor is further configured to perform the operation corresponding to the operation signal after receiving the electric energy of the power supply; The power supply circuit also includes a voltage divider circuit, the input end of the voltage divider circuit is electrically connected to the acquisition circuit, and the output end is electrically connected to the power supply and the processor, respectively, and is used for the output according to the acquisition circuit. Obtain the second control signal and the third control signal by operating the signal, and output the second control signal to the power supply, so that the power supply can start to supply power to the processor, and output the third control signal to the processor, so that the processor executes the operation corresponding to the third control signal after receiving the electric energy of the power supply. 2. The power supply circuit according to claim 1, wherein the power supply circuit further comprises a conversion circuit, one end of the conversion circuit is electrically connected to the power supply, and the other end is electrically connected to the processor, for converting the The electric energy output by the power supply is converted into electric energy required by the processor. 3. The power supply circuit according to claim 2, wherein the conversion circuit comprises at least one or a combination of DC voltage to DC voltage circuit, low dropout linear voltage regulator circuit and electronic switch circuit. 4. The power supply circuit according to claim 2, wherein the conversion circuit further comprises an enable terminal, the enable terminal of the conversion circuit is used to receive the electric energy output by the power supply, and output the power supply The electric energy of the power supply is used as the enable signal of the conversion circuit, and under the control of the enable signal, the electric energy output by the power supply is converted into the electric energy required by the processor. 5. The power supply circuit according to claim 1, characterized in that, the power supply circuit further comprises a signal processing circuit, the signal processing circuit is configured to at least change the level, or change the phase, or Delay processing, or extraction of jump edges, or extraction of pulses is one of processing, and the processed operation signal is used as the second control signal. 6. The power supply circuit according to claim 1, characterized in that, the operation signals input by the user acquired by the acquisition circuit after the power supply path of the processor is disconnected include a knob power-on signal, a switch pressing signal and an external power supply One or a combination of signals. 7. The power supply circuit according to claim 1, wherein the operation signal input by the user acquired by the acquisition circuit after the power supply path of the processor is disconnected includes an externally generated level signal, an externally generated voltage At least one or a combination of flat transition edge signals and externally generated pulse signals. 8. An electronic device, the electronic device comprising a power amplifier, characterized in that the electronic device further comprises the power supply circuit according to any one of claims 1 to 7, the power supply circuit is used for The power amplifier supplies power.