Power supply circuit and electronic equipment
By setting up a switching circuit between the backup power supply and the interface of the electrical equipment, and using a wake-up signal to control the switching circuit, the high cost caused by the large capacity of the backup power supply in the prior art is solved, and the effects of reducing costs and reducing energy waste are achieved.
Patent Information
- Application Number
- CN202522236645.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-10-23
- Publication Date
- 2025-12-05
- Estimated Expiration
- 2035-10-23
AI Technical Summary
Existing technologies require the selection of backup power supplies with larger power capacity to maintain power to the clock chip, which increases the cost of electronic devices.
A switching circuit is installed between the backup power supply and the interface of the electrical equipment. The switching circuit is turned on and off by a wake-up signal to select whether the backup power supply supplies power to the electrical equipment. When the backup power supply does not supply power, the electrical equipment is supplied by the mains power supply.
It reduces the cost of electronic devices, minimizes energy waste from backup power supplies, and enables continuous power supply to devices without increasing battery capacity.
Smart Images
Figure CN223639019U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of power supply, in particular to a power supply circuit and an electronic device. BACKGROUND
[0002] Most of the current electronic devices need to record and provide accurate time information continuously, in order to ensure that the time information can be maintained without loss when the electronic device is powered off or shut down, a backup power supply (such as a micro battery or a button battery) needs to be used to supply power to the clock chip (RTC, Real Time Clock) of the electronic device, so as to keep the clock chip running. However, after the patching is completed, the backup power supply starts to provide power to the clock chip, resulting in loss of power of the backup power supply before the electronic device is actually applied.
[0003] In addition, after the assembly of the electronic device is completed, the electronic device needs to be transported and stored before it is actually used, resulting in more power loss of the backup power supply. Therefore, in order to improve the service life of the electronic device, a backup power supply with a larger power capacity needs to be selected, resulting in an increase in cost. CONTENT OF THE INVENTION
[0004] Therefore, the purpose of the present application is to provide a power supply circuit and an electronic device, which solve the technical problem of high cost caused by the need to select a backup power supply with a larger power capacity in the prior art, and achieve the technical effect of reducing cost.
[0005] In a first aspect, the embodiments of the present application provide a power supply circuit, which comprises: a backup power supply; a power-consuming device interface for connecting a power-consuming device; a switching circuit arranged between the backup power supply and the power-consuming device interface; a wake-up signal interface connected to the switching circuit and used for receiving a wake-up signal; and a power supply interface led out between the switching circuit and the power-consuming device interface and used for connecting a power supply.
[0006] Optionally, the switching circuit comprises: a first control switch, one end of the first control switch being connected to one end of the backup power supply, and the other end of the first control switch being connected to the power-consuming device interface; and a second control switch, one end of the second control switch being connected to the control end of the first control switch, and the other end of the second control switch being connected to the other end of the backup power supply, and the control end of the second control switch being led out as the wake-up signal interface.
[0007] Optionally, the power supply circuit further comprises a self-locking circuit, wherein one end of the self-locking circuit is connected between one end of the backup power supply and the switching circuit, and the other end of the self-locking circuit is connected to the wake-up signal interface.
[0008] Optionally, the self-locking circuit comprises a third control switch, a first connection end of the third control switch is connected between the positive pole of the backup power supply and the switching circuit, a second connection end of the third control switch is connected to the wake-up signal interface, and a control end of the third control switch is connected between the first control switch and the second control switch in the switching circuit.
[0009] Optionally, the power supply circuit further comprises a first resistor arranged between the first connection end and the control end of the first control switch, and / or the power supply circuit further comprises a second resistor arranged between the control end and the second connection end of the second control switch.
[0010] Optionally, the power supply circuit further comprises a first capacitor arranged between the control end and the second connection end of the second control switch, and / or the power supply circuit further comprises a second capacitor arranged between the power consumer interface and the second connection end of the second control switch.
[0011] Optionally, the power supply circuit further comprises a first anti-reverse circuit arranged between the switching circuit and the power consumer interface, wherein the first anti-reverse circuit comprises a first diode, an anode of the first diode is connected to the switching circuit, and a cathode of the first diode is connected to the power consumer interface.
[0012] Optionally, the power supply circuit further comprises a second anti-reverse circuit arranged on a transmission line leading to the power supply interface, wherein the second anti-reverse circuit comprises a second diode, an anode of the second diode is connected to the power supply interface, and a cathode of the second diode is connected between the switching circuit and the power consumer interface.
[0013] In a second aspect, the embodiments of the present application further provide an electronic device, comprising: a power consumer connected to the power consumer interface; a power supply connected to the power supply interface; a controller connected to the wake-up signal interface and configured to issue the wake-up signal; and the power supply circuit as described in the first aspect or any possible implementation manner of the first aspect.
[0014] Optionally, the power consumer comprises a clock chip.
[0015] The power supply circuit and the electronic device provided by the embodiment of the present application, the power supply circuit comprises: a backup power supply; a power consumption device interface for connecting a power consumption device; a switch circuit arranged between the backup power supply and the power consumption device interface; a wake-up signal interface connected with the switch circuit for receiving a wake-up signal; and a power supply interface led out between the switch circuit and the power consumption device interface for connecting a power supply. By arranging the switch circuit between the backup power supply and the power consumption device interface, and leading out the power supply interface between the switch circuit and the power consumption device interface, whether the backup power supply supplies power to the power consumption device can be selected by controlling the on-off of the switch circuit, and when the backup power supply does not supply power, the power consumption device is supplied with power by the power supply, so as to continuously supply power to the power consumption device. The technical problem of high cost caused by the need to select a backup power supply with large power capacity in the prior art is solved, and the technical effect of reducing cost is achieved.
[0016] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the following preferred embodiments are described in detail below, and the accompanying drawings are described as follows. BRIEF DESCRIPTION OF DRAWINGS
[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can also be obtained without creative labor.
[0018] Figure 1 The structural schematic diagram of the power supply circuit provided by the embodiment of the present application is shown.
[0019] Figure 2 The circuit diagram of the power supply circuit provided by the embodiment of the present application is shown. DETAILED DESCRIPTION
[0020] In order to make the purposes, technical solutions and advantages of the embodiments of the present application more clear, the technical solutions in the embodiments of the present application will be described clearly and completely in the following by combining the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, not all. The components of the embodiments of the present application described and shown in the drawings herein can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. Based on the embodiments of the present application, every other embodiment obtained by those skilled in the art without creative labor belongs to the scope of protection of the present application.
[0021] In existing technologies, the clock chip in electronic devices needs to be continuously powered on to keep track of time after the device is turned on, and even after the device is turned off, the clock chip still needs continuous power. To maintain a continuous power supply to the clock chip, a backup battery is required. When the main battery of the electronic device fails, the backup battery can continue to power the clock chip. Furthermore, after the backup battery and clock chip are mounted and soldered onto the circuit board, the backup battery begins to power the clock chip. During subsequent assembly, transportation, and storage, the backup battery continues to discharge, resulting in wasted battery power before the electronic device is activated and used.
[0022] To address the aforementioned problems, this application provides a power supply circuit and electronic device. By setting a switching circuit between the backup power supply and the interface of the electrical device, and extending a power supply interface between the switching circuit and the interface of the electrical device, the switching circuit can be controlled to select whether the backup power supply supplies power to the electrical device. When the backup power supply is not supplying power, the electrical device is supplied with power from the backup power supply, thus ensuring a continuous power supply. This solves the technical problem of high cost caused by the need to select a backup power supply with a large power capacity in the prior art, achieving the technical effect of cost reduction. Specifically, as follows:
[0023] Please see Figure 1 , Figure 1 This is a schematic diagram of a power supply circuit provided in an embodiment of this application. Figure 1 As shown, the power supply circuit provided in this application embodiment includes: a backup power supply BT1; an electrical device interface RTC for connecting electrical devices; a switch circuit 101 disposed between the backup power supply and the electrical device interface; a wake-up signal interface BAT_EN connected to the switch circuit for receiving wake-up signals; and a power supply interface P3V3 led out from between the switch circuit and the electrical device interface for connecting the power supply.
[0024] The backup power supply is connected to the interface of the electrical equipment through a switching circuit, and the wake-up signal interface is connected to the switching circuit. The wake-up signal controls the on / off state of the switching circuit, that is, the wake-up signal controls the switching circuit to be turned on or off, thereby controlling whether the backup power supply supplies power to the electrical equipment.
[0025] Exemplary, when the electronic device in which the power supply circuit is installed is not activated for use, the power supply does not discharge externally, the switch circuit controls the transmission line connected between the standby power supply and the power device interface to be disconnected, and the standby power supply also does not discharge externally; when the electronic device in which the power supply circuit is installed is activated for use, the power supply discharges externally, the controller of the power supply circuit sends a wake-up signal, the wake-up signal controls the switch circuit to be closed to control the transmission line connected between the standby power supply and the power device interface to be conductive, and the standby power supply can discharge externally; in this way, the transmission line connected between the power supply and the power device interface is conductive, and the power supply with a larger power supply voltage supplies power to the power device.
[0026] Generally, when the transmission line connected between the power supply and the power device interface is conductive, if the power supply does not fail or has sufficient power, the power supply with a larger power supply voltage supplies power to the power device connected to the power device interface; if the power supply fails or other power devices need to be powered off or the electronic device needs to be shut down, the power supply stops supplying power externally, and at this time, the standby power supplies power to the power device.
[0027] Exemplary, the power device connected to the power device interface of the present application refers to a power device that needs to be continuously in a running state, and generally, the power device can be a clock chip (RTC, Real Time Clock) or a GPS chip (a special technology chip for positioning). The standby power supply only supplies power to the power device connected to the power device interface, and does not need to supply power to other power devices, and therefore, the standby power supply can select the power supply specification required by the power device connected to the power device interface, and generally, the standby power supply selects a micro battery or a button battery.
[0028] That is, the power device connected to the power device interface is a device that is continuously powered on after the electronic device is activated and started, the power supply supplies power to the power device connected to the power device interface during normal use of the electronic device, the standby power supply still ensures to supply power to the power device connected to the power device interface when the power supply cannot supply power, and the switch circuit ensures that the standby power supply does not discharge externally before the electronic device is activated.
[0029] Since the standby power supply of the prior art still consumes power during storage, transportation, assembly and the like, a larger capacity standby power supply needs to be selected to increase the service life, and therefore, the switch circuit connected to the wake-up signal interface is arranged in the present application to control the standby power supply to stop discharging externally before the electronic device is activated, and a standby battery with a smaller capacity can be selected in the selection process to reduce the cost and reduce the waste of power.
[0030] Please refer to Figure 2 ,Figure 2 A circuit diagram of a power supply circuit provided by an embodiment of the present application is shown in FIG. 1. As shown in the figure, the switch circuit 101 comprises: a first control switch Q1, a first connection end of the first control switch being connected to one end of the backup power supply BT1, a second connection end of the first control switch being connected to the power consumer interface RTC; a second control switch Q2, a first connection end of the second control switch Q2 being connected to a control end of the first control switch Q1, a second connection end of the second control switch Q2 being connected to the other end of the backup power supply BT1, a control end of the second control switch Q2 leading out as the wake-up signal interface BAT_EN. Figure 2
[0031] That is, the first control switch Q1 is arranged on the transmission line connected between the positive pole of the backup power supply BT1 and the power consumer interface RTC, the control end of the first control switch Q1 is connected to the first connection end of the second control switch Q2, the second connection end of the second control switch Q2 is connected to the negative pole of the backup power supply BT1, the control end of the second control switch Q2 serves as the wake-up signal interface BAT_EN for accepting the wake-up signal, and the negative pole of the backup power supply BT1 is connected to the ground GND.
[0032] For example, the wake-up signal is sent by the controller of the electronic device, that is, the input and output pins of the controller of the electronic device are connected to the wake-up signal interface, and the on-off state of the second control switch is controlled by sending the wake-up signal to the control end of the second control switch. The on-off state includes the on state or the off state, the on state means that the control switch is closed, and the off state means that the control switch is open. Further, the on-off state of the first control switch is controlled by the on-off state of the second control switch, so as to control whether the backup power supply is connected to the power consumer interface.
[0033] For example, the first control switch is a PMOS (P-channel metal-oxide-semiconductor field-effect transistor), the first connection end of the first control switch is the source (S) of the PMOS, the second connection end of the first control switch is the drain (D) of the PMOS, and further, when a low-level signal is received at the control end (gate) of the first control switch, the on-off state of the first control switch is switched to the on state, and the current flows from the first connection end to the second connection end of the first control switch. The second control switch is an NMOS (N-channel metal-oxide-semiconductor field-effect transistor), the first connection end of the second control switch is the drain (D) of the NMOS, the second connection end of the second control switch is the source (S) of the NMOS, and further, when a high-level signal is received at the control end (gate) of the second control switch, the on-off state of the second control switch is switched to the on state, and the current flows from the first connection end to the second connection end of the second control switch.
[0034] That is, if the controller of the electronic device continuously sends a high level wake-up signal, the second control switch can be controlled to be continuously in the on state. When the second control switch is closed, the first connection end and the second connection end of the second control switch are in conduction to access the negative pole of the backup power supply, thereby pulling down the level of the control end of the first control switch, and the first control switch is in the on state. In this way, the transmission line between the backup power supply and the power consumption device interface is in conduction, and the backup power supply and the power supply are both connected to the power consumption device interface.
[0035] As shown in Figure 2 , the power supply circuit further comprises a self-locking circuit 102, one end of the self-locking circuit 102 is connected between one end of the backup power supply BT1 and the switching circuit 101, and the other end of the self-locking circuit 102 is connected to the wake-up signal interface BAT_EN.
[0036] That is, the positive pole of the backup power supply is connected to the wake-up signal interface through the self-locking circuit to provide a high level signal to the wake-up signal interface, so that the wake-up signal only needs to be sent once to control the second control switch to maintain the on state for a long time, so that the backup power supply is continuously connected to the power consumption device interface.
[0037] As shown in Figure 2 , the self-locking circuit 102 comprises a third control switch Q3, the first connection end of the third control switch Q3 is connected between the positive pole of the backup power supply BT1 and the switching circuit 101, the second connection end of the third control switch Q3 is connected to the wake-up signal interface BAT_EN, and the control end of the third control switch Q3 is connected between the first control switch Q1 and the second control switch Q2 in the switching circuit.
[0038] For example, the third control switch is a PMOS (P-channel metal oxide semiconductor field effect transistor), the first connection end of the third control switch is the source (S) of the PMOS, and the second connection end of the third control switch is the drain (D) of the PMOS. Then, when a low level signal is received at the control end (gate) of the third control switch, the on-off state of the third control switch switches to the on state, and the current flows from the first connection end of the third control switch to the second connection end of the third control switch.
[0039] The controller of the electronic device sends a high-level wake-up signal to the control end of the second control switch, so as to pull down the level at the connection between the first control switch and the second control switch, thereby causing the control end of the third control switch to be pulled down to a low level, the third control switch is in a conductive state, and the first connection end of the third control switch and the second connection end of the third control switch are conductive, so that the second connection end of the third control switch is connected to the positive pole of the backup power supply. Further, the wake-up signal interface is continuously connected to the positive pole of the backup power supply and is in a high-level state, maintaining the second control switch in a conductive state, and the conductive state of the second control switch is self-locked through the third control switch, so as to avoid the continuous sending of the wake-up signal by the controller of the electronic device.
[0040] That is, when the second control switch enters a conductive state through the wake-up signal, the control ends of the first control switch and the third control switch are pulled down, and the first control switch and the third control switch are switched to a conductive state. Therefore, the conductive state of the third control switch controls the control end of the second control switch to be continuously in a high-level state, so as to control the control ends of the first control switch and the third control switch to be continuously in a low level and in a conductive state, so as to maintain the continuous closing of the first control switch and the second control switch. Therefore, only one wake-up signal needs to be sent, and the first control switch, the second control switch and the third control switch can be controlled to be in a conductive state continuously, thereby reducing the difficulty of the controller of the electronic device continuously sending a high-level signal.
[0041] As shown in Figure 2 The power supply circuit further includes a first resistor R1 arranged between the first connection end and the control end of the first control switch, and / or the power supply circuit further includes a second resistor R2 arranged between the control end and the second connection end of the second control switch.
[0042] The first resistor R1 is arranged between the source and the control end of the first control switch Q1, and the first resistor R1 is also arranged between the source and the control end of the third control switch Q3, so that the first resistor R1 provides a bias voltage required for the working between the source and the gate of the control switch, that is, the first resistor R1 satisfies the conductive condition of the first control switch and the third control switch. The second resistor R2 is arranged between the source and the control end of the second control switch Q2, and the second resistor R2 is also arranged between the source and the control end of the second control switch Q2, so that the second resistor R2 provides a bias voltage required for the working between the source and the gate of the control switch, that is, the second resistor R2 satisfies the conductive condition of the second control switch.
[0043] As shown in Figure 2As shown, the power supply circuit further comprises a first capacitor C1, which is arranged between the control end of the second control switch Q2 and the second connection end; and / or, the power supply circuit further comprises a second capacitor C2, which is arranged between the power consumer interface RTC and the second connection end of the second control switch Q2.
[0044] That is, the first capacitor is connected in parallel across the second resistor, and the second capacitor is arranged between the power consumer interface and the second connection end of the second control switch, and the first capacitor and the second capacitor play a filtering role to provide a smooth and stable voltage to the power consumer interface.
[0045] Specifically, the power supply circuit further comprises a first anti-reverse circuit, which is arranged between the switching circuit and the power consumer interface; and / or, the power supply circuit further comprises a second anti-reverse circuit, which is arranged on the transmission line leading out the power supply source interface.
[0046] That is, the first anti-reverse circuit prevents the power of the power supply source from being transmitted to the backup power source through the switching circuit, and the second anti-reverse circuit prevents the power of the backup power source from being transmitted to the power supply source. Further, the first anti-reverse circuit and the second anti-reverse circuit disconnect the power transmission between the backup power source and the power supply source, ensure that the backup power source is only connected to the power consumer interface RTC and not connected to other circuits, ensure that the backup power source only supplies power to the power consumer interface RTC after power failure, prevent the backup power source from consuming too much power, and increase the continuous power supply time of the backup power source after power failure.
[0047] As shown in the Figure 2 The first anti-reverse circuit comprises a first diode D1, the anode of the first diode is connected to the switching circuit, and the cathode of the first diode is connected to the power consumer interface. The second anti-reverse circuit comprises a second diode D2, the anode of the second diode is connected to the power supply source interface, and the cathode of the second diode is connected between the switching circuit and the power consumer interface.
[0048] Based on the same application concept, the embodiments of the present application also provide an electronic device corresponding to the power supply circuit provided in the above embodiments. Since the principle of solving problems in the electronic device of the embodiments of the present application is similar to that of the power supply circuit of the above embodiments of the present application, the implementation of the electronic device can be referred to the implementation of the power supply circuit, and the repeated parts will not be described herein.
[0049] The embodiments of the present application provide an electronic device, which comprises: a power consumer connected to the power consumer interface; a power supply source connected to the power supply source interface; a controller connected to the wake-up signal interface, configured to issue the wake-up signal; and a power supply circuit as provided in the above embodiments.
[0050] The power-consuming device includes a clock chip.
[0051] That is, the electronic device refers to an electronic device that needs to use a clock chip, and the electronic device generally includes a mobile phone, a computer, a smart watch, and the like. Further, the power supply refers to a main power supply that supplies power to the internal power-consuming device of the electronic device, that is, the power supply supplies power not only to the clock chip but also to other power-consuming devices during the operation of the electronic device, and the backup power supply in the power supply circuit supplies power only to the clock chip in the case where the power supply cannot supply power to the clock chip, so as to ensure that the clock chip is continuously powered on to realize the timing function.
[0052] The controller of the electronic device generally sets the time of sending the wake-up signal as the time when the electronic device is activated for use. Alternatively, the time of sending the wake-up signal is set according to the actual power-on needs of the clock chip, for example, the time when the electronic device is assembled can be selected. The controller of the electronic device can select a microcontroller unit (MCU) of the electronic device.
[0053] Further, the circuit of the present application can reduce unnecessary power consumption of the backup battery, so that in order to meet the same demand for the continuous power-on time of the clock chip after power failure, a backup battery with smaller capacity and lower price can be selected to reduce the cost.
[0054] In the description of the present application, it should be noted that the terms "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the present application is usually placed, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", and the like are only used to distinguish the description and cannot be understood as indicating or implying relative importance.
[0055] It should also be noted that, unless otherwise explicitly specified and limited, the terms "set", "connected" should be understood broadly, for example, it can be fixedly connected, or detachably connected, or integrally connected; it can be directly connected, or indirectly connected through an intermediate medium, or the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.
[0056] The above merely provides an example of the present application, and is not used to limit the protection scope of the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.
Claims
1. A power supply circuit, characterized by comprising: The power supply circuit comprises: a backup power supply; a power-consuming device interface for connecting a power-consuming device; a switching circuit arranged between the backup power supply and the power-consuming device interface, a wake-up signal interface connected to the switching circuit for receiving a wake-up signal; a power supply interface led out between the switching circuit and the power-consuming device interface for connecting a power supply.
2. The power supply circuit according to claim 1, characterized in that, The switching circuit comprises: a first control switch, a first connection end of the first control switch being connected to one end of the backup power supply, and a second connection end of the first control switch being connected to the power-consuming device interface; a second control switch, a first connection end of the second control switch being connected to a control end of the first control switch, and a second connection end of the second control switch being connected to the other end of the backup power supply, and a control end of the second control switch being led out as the wake-up signal interface.
3. The power supply circuit according to claim 1 or 2, characterized in that, The power supply circuit further comprises a self-locking circuit, wherein one end of the self-locking circuit is connected between the one end of the backup power supply and the switching circuit, and the other end of the self-locking circuit is connected to the wake-up signal interface.
4. The power supply circuit of claim 3, wherein, The self-locking circuit comprises: a third control switch, a first connection end of the third control switch being connected between the positive electrode of the backup power supply and the switching circuit, a second connection end of the third control switch being connected to the wake-up signal interface, and a control end of the third control switch being connected between the first control switch and the second control switch in the switching circuit.
5. The power supply circuit of claim 2, wherein, The power supply circuit further comprises a first resistor arranged between the first connection end and the control end of the first control switch; and / or, the power supply circuit further comprises a second resistor arranged between the control end and the second connection end of the second control switch.
6. The power supply circuit of claim 2, wherein, The power supply circuit further comprises a first capacitor arranged between the control end and the second connection end of the second control switch; and / or, the power supply circuit further comprises a second capacitor arranged between the power-consuming device interface and the second connection end of the second control switch.
7. The power supply circuit of claim 1, wherein, The power supply circuit further comprises a first anti-reverse circuit arranged between the switching circuit and the power-consuming device interface, wherein the first anti-reverse circuit comprises a first diode, an anode of the first diode being connected to the switching circuit, and a cathode of the first diode being connected to the power-consuming device interface.
8. The power supply circuit of claim 1, wherein, The power supply circuit further comprises a second anti-reverse circuit arranged on a transmission line leading out the power supply interface, wherein the second anti-reverse circuit comprises a second diode, an anode of the second diode being connected to the power supply interface, and a cathode of the second diode being connected between the switching circuit and the power-consuming device interface.
9. An electronic device, comprising: The electronic device comprises: the power supply circuit according to any one of claims 1 to 8; a power-consuming device connected to the power-consuming device interface; a power supply connected to the power supply interface; a controller connected to the wake-up signal interface for issuing the wake-up signal.
10. The electronic device of claim 9, wherein, The power-consuming device comprises a clock chip.