CN218958613U - Low-power consumption power supply circuit, low-power consumption system and electronic equipment - Google Patents
Low-power consumption power supply circuit, low-power consumption system and electronic equipment Download PDFInfo
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- CN218958613U CN218958613U CN202222655040.2U CN202222655040U CN218958613U CN 218958613 U CN218958613 U CN 218958613U CN 202222655040 U CN202222655040 U CN 202222655040U CN 218958613 U CN218958613 U CN 218958613U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes
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Abstract
The utility model discloses a low-power consumption power supply circuit, a low-power consumption system and electronic equipment, wherein the low-power consumption power supply circuit comprises: the timer starts to count when the electronic equipment is started for the first time, outputs a first timing trigger signal when the counted time reaches a first preset time, and outputs a second timing trigger signal and restarts to count when the counted time reaches a second preset time; a controller which alternately outputs a start control signal and a sleep control signal according to the first timing trigger signal and the second timing trigger signal; the power supply input end of the power supply circuit is connected with an external power supply, the input end of the power supply circuit is connected with the output end of the controller, and when the power supply circuit receives a starting control signal, the power supply circuit performs voltage conversion on the external power supply to generate a first voltage and output the first voltage to the electric device; when the power supply circuit receives the dormancy control signal, the external power supply is subjected to voltage conversion to generate a second voltage and output the second voltage to the electric device. The present utility model aims to reduce the power consumption of an electronic device.
Description
Technical Field
The present utility model relates to the field of power supply systems, and in particular, to a low power consumption power supply circuit, a low power consumption system, and an electronic device.
Background
As the functions of electronic devices are increasing, the number of electric devices required in the electronic devices is increasing, resulting in an increase in power consumption of the electronic devices and a higher use cost.
Disclosure of Invention
The utility model mainly aims to provide a low-power-consumption power supply circuit, a low-power-consumption system and electronic equipment, and aims to reduce power consumption of the electronic equipment.
In order to achieve the above object, the present utility model provides a low power consumption power supply circuit, which is applied to an electronic device, and includes:
the timer is used for starting timing when the electronic equipment is started for the first time, outputting a first timing trigger signal when the timing time reaches a first preset time, outputting a second timing trigger signal and restarting timing when the timing time reaches a second preset time;
the input end of the controller is connected with the output end of the timer, and the controller is used for alternately outputting a start control signal and a sleep control signal according to the first timing trigger signal and the second timing trigger signal;
the power supply circuit is used for carrying out voltage conversion on the external power supply when receiving the starting control signal so as to generate a first voltage and outputting the first voltage to the electric device;
the power supply circuit is also used for carrying out voltage conversion on the external power supply when receiving the dormancy control signal so as to generate a second voltage and outputting the second voltage to the power utilization device.
Optionally, the power supply circuit includes:
the power supply chip comprises a processor, a voltage regulating circuit and a register, wherein the input end of the processor is connected with the signal input end, the output end of the processor is connected with the first input end of the voltage regulating circuit, the second input end of the voltage regulating circuit is used for being connected with an external power supply, the output end of the voltage regulating circuit is used for being connected with the electric appliance, a first voltage value and a second voltage value are preset in the register, and the first voltage value is higher than the second voltage value;
when the processor receives the starting control signal, the first voltage value in the register is read, the voltage regulating circuit is controlled to convert the external power supply voltage into the first voltage, and then the first voltage is output to the power utilization device;
and when the processor receives the dormancy control signal, reading the second voltage value in the register, controlling the voltage regulating circuit to convert the external power supply voltage into the second voltage and outputting the second voltage to the power utilization device.
Optionally, the power chip further includes:
the processor is in communication connection with a debugging output end of the controller through the debugging interface, and the controller is further used for outputting a debugging signal when receiving a debugging trigger signal;
the processor is further configured to receive the debug signal through the debug interface, and debug a voltage value preset in the register according to the debug signal, so as to change a power supply voltage output by the power supply circuit.
Optionally, the power supply circuit includes:
the controlled end of the switching circuit is connected with the signal input end, the switching circuit is used for being started when the starting control signal is received through the signal input end, and the switching circuit is also used for being stopped when the dormancy control signal is received through the signal input end;
the input end of the buck converter is used for being connected with the external power supply, and the buck converter is used for outputting direct-current power supply voltage after the external power supply is subjected to buck conversion;
the input end of the voltage dividing circuit is connected with the output end of the switching circuit and the output end of the buck converter, and the voltage dividing circuit is used for dividing the direct current power supply output by the buck converter and outputting corresponding power supply voltage when the switching circuit is turned on/off;
the input end of the filter circuit is connected with the output end of the voltage dividing circuit, the output end of the filter circuit is connected with the electric device, and the filter circuit is used for filtering the power supply voltage output by the voltage dividing circuit and outputting the power supply voltage to the electric device.
Optionally, the switch circuit includes a first NMOS and a first resistor, where a gate of the first NMOS is a controlled end of the switch circuit, a drain of the first NMOS is connected to a first end of the first resistor, a source of the first NMOS is grounded, and a second end of the first resistor is an output end of the switch circuit.
Optionally, the voltage dividing circuit includes a second resistor and a third resistor, a first end of the second resistor is an input end of the voltage dividing circuit and is connected with a first end of the third resistor, a second end of the second resistor is an output end of the voltage dividing circuit, and a second end of the third resistor is grounded.
The utility model also provides a low-power-consumption system which comprises the low-power-consumption power supply circuit and the power utilization device.
The utility model also provides electronic equipment, which comprises the low-power-consumption system.
According to the technical scheme, the timer starts to count when the electronic equipment is started for the first time, and when the count time reaches the preset time, the first timing trigger signal and the second timing trigger signal are output to the controller, the controller alternately outputs the starting control signal and the dormancy control signal to the power supply circuit according to the first timing trigger signal and the second timing trigger signal, and the power supply circuit can perform corresponding voltage conversion on an external power supply according to the starting/dormancy control signal received by the signal input end; when the power supply circuit receives the start control signal, the voltage corresponding to the start state can be output after the voltage conversion of the external power supply, and when the power supply circuit receives the sleep control signal, the voltage corresponding to the sleep state can be output after the voltage conversion of the external power supply, so that the power consumption in the sleep state is smaller than that in the start state, and the utilization rate of the power supply is improved. The present utility model aims to reduce the power consumption of an electronic device.
Drawings
In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a functional module of an embodiment of a low power supply circuit according to the present utility model;
FIG. 2 is a schematic diagram of a functional module of another embodiment of the low power supply circuit of the present utility model;
FIG. 3 is a schematic diagram of a functional module of a low power supply circuit according to another embodiment of the present utility model;
fig. 4 is a schematic circuit diagram of an embodiment of a switch circuit, a voltage dividing circuit and a filter circuit in the low-power consumption power supply circuit of the present utility model.
Reference numerals illustrate:
| reference numerals | Name of the name | Reference numerals | Name of the |
| 10 | |
53 | |
| 20 | Controller for controlling a |
54 | |
| 30 | Power supply circuit | V | |
| 41 | Voltage regulating circuit | V1 | |
| 42 | Processor and method for controlling the same | V2 | |
| 43 | Register | R1～R3 | First to |
| 51 | Switching circuit | Q1 | |
| 52 | Step-down converter |
The achievement of the objects, functional features and advantages of the present utility model will be further described with reference to the accompanying drawings, in conjunction with the embodiments.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
It should be noted that, if directional indications (such as up, down, left, right, front, and rear … …) are included in the embodiments of the present utility model, the directional indications are merely used to explain the relative positional relationship, movement conditions, etc. between the components in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indications are correspondingly changed.
In addition, if there is a description of "first", "second", etc. in the embodiments of the present utility model, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present utility model.
The utility model provides a low-power consumption power supply circuit which is applied to electronic equipment.
Referring to fig. 1, in an embodiment of the present utility model, the low power consumption power supply circuit includes:
the timer 10 is configured to start timing when the electronic device is started for the first time, output a first timing trigger signal when the timing time reaches a first preset time, and output a second timing trigger signal and restart timing when the timing time reaches a second preset time;
the input end of the controller 20 is connected with the output end of the timer 10, and the controller 20 is used for alternately outputting a start control signal and a sleep control signal according to a first timing trigger signal and a second timing trigger signal;
the power supply circuit 30, wherein a power supply input end of the power supply circuit 30 is used for being connected with an external power supply V, an input end of the power supply circuit 30 is connected with an output end of the controller 20, a power supply output end of the power supply circuit 30 is used for being connected with an electric device, and the power supply circuit 30 is used for performing voltage conversion on the external power supply V when receiving the starting control signal so as to generate a first voltage V1 and outputting the first voltage V1 to the electric device;
the power supply circuit 30 is further configured to perform voltage conversion on the external power supply V when receiving the sleep control signal, so as to generate a second voltage V2, and output the second voltage V2 to the power consumption device.
In this embodiment, the preset time may be set in the timer 10, when the electronic device is started for the first time, the controller 20 may control the timer 10 to start timing, and when the timing time reaches the first preset time, output a first timing trigger signal, when the timing time reaches the second preset time, output a second timing trigger signal and restart timing, for example, the timing time of the timer 10 is ten minutes, when the timing time reaches three minutes, the timer 10 outputs the first timing trigger signal, when the timing time reaches ten minutes, the timer 10 outputs the second timing trigger signal, and the timing time is cleared, and restart timing, and the specific time setting of the timer 10 may be set according to the specific requirements of the user and the actual situation of the electronic device; the controller 20 may be a digital signal processor 42 (Digital Signal Processor, abbreviated as DSP), a programmable logic device (Programmable Logic Device, abbreviated as PLD), a field programmable gate array (Field Programmable Gate Array, abbreviated as FPGA), a microprocessor 42, an MCU, a single-chip microcomputer, or other electronic components, wherein the controller 20 outputs a start control signal after receiving a first timing trigger signal, controls the power device to start, and makes the power circuit 30 output a power supply voltage corresponding to the start state to the power device, and the controller 20 outputs a sleep control signal after receiving a second timing trigger signal, controls the power device to sleep, and makes the power circuit 30 output a power supply voltage corresponding to the sleep state to the power device, so that the cycle is repeated. The timer 10 outputs a timing trigger signal to the controller 20 at regular time, so that the electric device of the electronic equipment can be circularly switched between the starting state and the dormant state, and the situation that the service life or the working state of the device is influenced due to heating of the electric device caused by overlong service time can be avoided.
It can be understood that the start/sleep control signal is output by the controller 20, in this embodiment, a start/sleep button may be further disposed on the electronic device, so that the user can output the start/sleep trigger control signal to the controller 20 by triggering the start/sleep button on the electronic device, so that the controller 20 outputs the start/sleep control signal to achieve the purpose of manually controlling sleep or starting by the user, and the priority of controlling by outputting the start/sleep trigger control signal through the start/sleep button is higher than the priority of controlling by outputting the first timing trigger signal and the second timing trigger signal through the timer 10; the electric device can be a display screen of a computer or a mobile phone, a lamp bead of lighting equipment, and the like; the power circuit 30 may be implemented by a DC-DC circuit or an LDO chip, and the power circuit 30 converts the voltage of the external power V according to the start/sleep control signal and outputs a corresponding power supply voltage; for example, when the power circuit 30 receives a high-level electrical signal, that is, a start control signal, the external power V can be converted to output a first power voltage required when the application device is in a start state, and when the power circuit 30 receives a low-level electrical signal, that is, a sleep control signal, the external power V can be converted to output a second power voltage required when the application device is in a sleep state. In order to reduce power consumption of the system or the electronic device, the voltage required by the electric device is lower than the voltage required by the electric device in the start state when the electric device is in the sleep state, so that a circuit capable of outputting two voltages can be set when the DC-DC circuit is adopted as the power circuit 30, and the circuit elements with corresponding parameters are selected according to the first power voltage and the second power voltage required by the user to set.
According to the technical scheme, the timer 10 starts to count when the electronic equipment is started for the first time, and when the count time reaches the preset time, a first timing trigger signal and a second timing trigger signal are output to the controller 20, the controller 20 alternately outputs a starting control signal and a dormancy control signal to the power circuit 30 according to the first timing trigger signal and the second timing trigger signal, and the power circuit 30 can perform corresponding voltage conversion on an external power supply V according to the starting/dormancy control signal received by the signal input end; when the power supply circuit 30 receives the start control signal, the voltage corresponding to the start state can be output after the voltage conversion of the external power supply V, and when the power supply circuit 30 receives the sleep control signal, the voltage corresponding to the sleep state can be output after the voltage conversion of the external power supply V, so that the power consumption in the sleep state is smaller than that in the start state, and the power utilization rate of the power supply is improved. The present utility model aims to reduce the power consumption of an electronic device.
Referring to fig. 2, in one embodiment, the power circuit 30 includes:
the power chip comprises a processor 42, a voltage regulating circuit 41 and a register 43, wherein the input end of the processor 42 is connected with the signal input end, the output end of the processor 42 is connected with the first input end of the voltage regulating circuit 41, the second input end of the voltage regulating circuit 41 is used for being connected with an external power supply V, the output end of the voltage regulating circuit 41 is used for being connected with the electric device, a first voltage V1 value and a second voltage V2 value are preset in the register 43, and the first voltage V1 value is higher than the second voltage V2 value;
when the processor 42 receives the start control signal, it reads the value of the first voltage V1 in the register 43, and controls the voltage regulating circuit 41 to convert the voltage of the external power V into the first voltage V1, and then outputs the first voltage V1 to the power device;
when receiving the sleep control signal, the processor 42 reads the value of the second voltage V2 in the register 43, and controls the voltage regulating circuit 41 to convert the external power V into the second voltage V2, and then outputs the second voltage V2 to the power device.
In this embodiment, the processor 42 may be a digital signal processor 42 (Digital Signal Processor, abbreviated as DSP), an MCU, a single chip microcomputer, or other electronic components; the function of the register 43 is to store binary codes, which is formed by combining flip-flops with a storage function, a first voltage V1 value stored in the register 43 can represent a working voltage required by an electric device in an electronic device in a starting state, a second voltage V2 value stored in the register 43 can represent a dormant voltage required by the electric device in the electronic device in a dormant state, and the first voltage V1 value and the second voltage V2 value can be respectively stored by the two registers 43; the voltage regulating circuit 41 may be composed of a MOS transistor, an amplifier, a resistor and other electrical components, and the voltage regulating circuit 41 converts the external power V to output a corresponding voltage, for example, when the processor 42 receives a high-level electrical signal, i.e. a start control signal, the processor reads the value of the first voltage V1 in the register 43, and controls the voltage regulating circuit 41 to convert the voltage of the external power V into the first voltage V1 and output the first voltage to the electrical device; when receiving the low-level electric signal, i.e. the sleep control signal, the processor 42 reads the value of the second voltage V2 in the register 43, and controls the voltage regulating circuit 41 to convert the external power V into the second voltage V2 and output the second voltage V2 to the electric device. In this embodiment, the power supply chip composed of the processor 42, the voltage regulating circuit 41 and the register 43 can convert the external power V voltage into the corresponding power supply voltage according to the start/sleep control signal received by the signal input terminal and output the power supply voltage to the electric device.
In an embodiment, the power chip further comprises:
the debug interface is connected with a debug input end of the processor 42, the processor 42 is in communication connection with a debug output end of the controller 20 through the debug interface, and the controller 20 is further used for outputting a debug signal when receiving a debug trigger signal;
the processor 42 is further configured to receive the debug signal through the debug interface, and debug a voltage value preset in the register 43 according to the debug signal, so as to change a power supply voltage output by the power supply circuit 30.
In this embodiment, the debug interface may be used to connect the processor 42 in the power chip with the controller 20 in a communication manner, and the debug interface may be an I2C interface, so that the processor 42 and the controller 20 communicate with each other through an I2C bus, a user may trigger a debug button on the electronic device, output a debug trigger signal to the controller 20, so that the controller 20 generates and outputs a corresponding debug signal to the processor 42, and the processor 42 may modify the first voltage V1 value and the second voltage V2 value preset and stored in the register 43 according to the debug signal, and may set an increase button and a decrease button to raise or lower the voltage value. For example, after updating the components in the electronic device, the voltage required for the sleep state of the components changes, the user may press the debug button to correspondingly raise or lower the second voltage V2 preset in the register 43, and if the voltage required for the start state changes, the voltage may also be correspondingly adjusted. In this embodiment, the processor 42 and the controller 20 are connected in a communication manner through the debug interface, and the controller 20 can output a debug signal to the processor 42 to debug a preset voltage in the register 43, so as to change the power supply voltage output by the power supply circuit 30.
In another embodiment, the controller 20 has a detection end connected to an output end of the voltage regulating circuit 41 in the power chip, the controller 20 can detect a voltage value output by the voltage regulating circuit 41, a first voltage V1 value and a second voltage V2 value are preset in the controller 20, the controller 20 can detect and compare whether the voltage value output by the voltage regulating circuit 41 in the electronic device start state and the sleep state is equal to the first voltage V1 value and the second voltage V2 value, if not, the controller 20 can output a debug signal to the processor 42, and adjust the voltage value stored in the register 43 to make the voltage value output by the voltage regulating circuit 41 stable at the first voltage V1 value or the second voltage V2 value.
Referring to fig. 3, in one embodiment, the power circuit 30 includes:
a switch circuit 51, wherein a controlled end of the switch circuit 51 is connected with the signal input end, the switch circuit 51 is used for being turned on when the start control signal is received through the signal input end, and the switch circuit 51 is also used for being turned off when the sleep control signal is received through the signal input end;
the input end of the buck converter 52 is used for being connected with the external power supply V, and the buck converter 52 is used for outputting a direct-current power supply voltage after the external power supply V is subjected to buck conversion;
the voltage dividing circuit 53, wherein an input end of the voltage dividing circuit 53 is connected with an output end of the switch circuit 51 and an output end of the buck converter 52, and the voltage dividing circuit 53 is configured to divide the dc power output by the buck converter 52 and output a corresponding power supply voltage when the switch circuit 51 is turned on/off;
the input end of the filter circuit 54 is connected with the output end of the voltage dividing circuit 53, the output end of the filter circuit 54 is connected with the electric device, and the filter circuit 54 is used for filtering the power supply voltage output by the voltage dividing circuit 53 and outputting the filtered power supply voltage to the electric device.
In this embodiment, the switch circuit 51 may be formed by one or more MOS transistors and other electrical components; the buck converter 52 may be the buck converter 52 of the type AP62300, or other devices having the same function; the voltage dividing circuit 53 may be constituted by two or more resistors; the filter circuit 54 may be constructed using one or more capacitors. It can be understood that the buck converter 52 can buck-convert the external power V and output a fixed voltage to the voltage dividing circuit 53, the switch circuit 51 is connected to the voltage dividing circuit 53, and when the switch circuit 51 is turned on or off according to the received start/sleep control signal, different resistance values are connected to the voltage dividing circuit 53, so that the voltage value output by the voltage dividing circuit 53 will change according to the condition that the switch circuit 51 is turned on or off, and then the voltage value is filtered by the filter circuit 54 and then output a corresponding power supply voltage to the electric device, and the output voltage value can be set by the voltage dividing circuit 53 by adopting resistors with different resistance values, specifically can be set according to the start voltage value and the sleep voltage value required by a user. In the present embodiment, the power supply circuit 30 formed by the switch circuit 51, the buck converter 52, the voltage dividing circuit 53 and the filter circuit 54 can output the corresponding power supply voltage to the electric device according to the start/sleep control signal received by the signal input terminal.
Referring to fig. 3 and 4, in an embodiment, the switch circuit 51 includes a first NMOS transistor Q1 and a first resistor R1, the gate of the first NMOS transistor Q1 is a controlled end of the switch circuit 51, the drain of the first NMOS transistor Q1 is connected to the first end of the first resistor R1, the source of the first NMOS transistor Q1 is grounded, and the second end of the first resistor R1 is an output end of the switch circuit 51.
The voltage dividing circuit 53 includes a second resistor R2 and a third resistor R3, where a first end of the second resistor R2 is an input end of the voltage dividing circuit 53 and is connected to a first end of the third resistor R3, a second end of the second resistor R2 is an output end of the voltage dividing circuit 53, and a second end of the third resistor R3 is grounded.
In this embodiment, when the gate of the first NMOS transistor Q1 receives the high-level electrical signal, the first NMOS transistor Q1 is turned on, and at this time, the second resistor R2 and the third resistor R3 are connected in parallel, and at this time, the equivalent resistor formed by the second resistor R2 and the third resistor R3 and the first resistor R1 divide the voltage output by the buck converter 52, and output the corresponding supply voltage, that is, the first voltage V1 output in the startup state in the above embodiment; when the grid electrode of the first NMOS tube Q1 receives the low-level electric signal, the first NMOS tube Q1 is turned off, and at this time, the second resistor R2 and the third resistor R3 divide the voltage output by the buck converter 52 and output the corresponding power supply voltage, that is, the second voltage V2 output in the sleep state in the above embodiment; it can be understood that the specific output power supply voltage value can be set correspondingly by setting the resistance values of the first resistor R1, the second resistor R2 and the third resistor R3.
The utility model also provides a low-power consumption system.
In one embodiment, the low power system includes the low power supply circuit and the power device as described above. The specific structure of the low-power consumption power supply circuit refers to the above embodiments, and because the low-power consumption system adopts all the technical solutions of all the embodiments, the low-power consumption power supply circuit has at least all the beneficial effects brought by the technical solutions of the embodiments, and is not described in detail herein.
The utility model further provides electronic equipment.
In an embodiment, the electronic device comprises a low power system as described above. The specific structure of the low power consumption system refers to the above embodiments, and because the electronic device adopts all the technical solutions of all the embodiments, the low power consumption system at least has all the beneficial effects brought by the technical solutions of the embodiments, and the details are not repeated here.
The foregoing description is only of the optional embodiments of the present utility model, and is not intended to limit the scope of the utility model, and all the equivalent structural changes made by the description of the present utility model and the accompanying drawings or direct/indirect application in other related technical fields are included in the scope of the utility model.
Claims (8)
1. A low power consumption power supply circuit for use in an electronic device, the low power consumption power supply circuit comprising:
the timer is used for starting timing when the electronic equipment is started for the first time, outputting a first timing trigger signal when the timing time reaches a first preset time, outputting a second timing trigger signal and restarting timing when the timing time reaches a second preset time;
the input end of the controller is connected with the output end of the timer, and the controller is used for alternately outputting a start control signal and a sleep control signal according to the first timing trigger signal and the second timing trigger signal;
the power supply circuit is used for carrying out voltage conversion on the external power supply when receiving the starting control signal so as to generate a first voltage and outputting the first voltage to the electric device;
the power supply circuit is also used for carrying out voltage conversion on the external power supply when receiving the dormancy control signal so as to generate a second voltage and outputting the second voltage to the power utilization device.
2. The low power consumption power supply circuit of claim 1, wherein the power supply circuit comprises:
the power supply chip comprises a processor, a voltage regulating circuit and a register, wherein the input end of the processor is connected with the signal input end, the output end of the processor is connected with the first input end of the voltage regulating circuit, the second input end of the voltage regulating circuit is used for being connected with an external power supply, the output end of the voltage regulating circuit is used for being connected with the electric appliance, a first voltage value and a second voltage value are preset in the register, and the first voltage value is higher than the second voltage value;
when the processor receives the starting control signal, the first voltage value in the register is read, the voltage regulating circuit is controlled to convert the external power supply voltage into the first voltage, and then the first voltage is output to the power utilization device;
and when the processor receives the dormancy control signal, reading the second voltage value in the register, controlling the voltage regulating circuit to convert the external power supply voltage into the second voltage and outputting the second voltage to the power utilization device.
3. The low power supply circuit of claim 2, wherein the power supply chip further comprises:
the processor is in communication connection with a debugging output end of the controller through the debugging interface, and the controller is further used for outputting a debugging signal when receiving a debugging trigger signal;
the processor is further configured to receive the debug signal through the debug interface, and debug a voltage value preset in the register according to the debug signal, so as to change a power supply voltage output by the power supply circuit.
4. The low power consumption power supply circuit of claim 1, wherein the power supply circuit comprises:
the controlled end of the switching circuit is connected with the signal input end, the switching circuit is used for being started when the starting control signal is received through the signal input end, and the switching circuit is also used for being stopped when the dormancy control signal is received through the signal input end;
the input end of the buck converter is used for being connected with the external power supply, and the buck converter is used for outputting direct-current power supply voltage after the external power supply is subjected to buck conversion;
the input end of the voltage dividing circuit is connected with the output end of the switching circuit and the output end of the buck converter, and the voltage dividing circuit is used for dividing the direct current power supply output by the buck converter and outputting corresponding power supply voltage when the switching circuit is turned on/off;
the input end of the filter circuit is connected with the output end of the voltage dividing circuit, the output end of the filter circuit is connected with the electric device, and the filter circuit is used for filtering the power supply voltage output by the voltage dividing circuit and outputting the power supply voltage to the electric device.
5. The low power supply circuit of claim 4, wherein the switching circuit comprises a first NMOS and a first resistor, the gate of the first NMOS is the controlled terminal of the switching circuit, the drain of the first NMOS is connected to the first terminal of the first resistor, the source of the first NMOS is grounded, and the second terminal of the first resistor is the output terminal of the switching circuit.
6. The low power supply circuit of claim 4, wherein the voltage divider circuit comprises a second resistor and a third resistor, a first end of the second resistor is an input end of the voltage divider circuit and is connected with a first end of the third resistor, a second end of the second resistor is an output end of the voltage divider circuit, and a second end of the third resistor is grounded.
7. A low power consumption system, characterized in that it comprises a low power consumption power supply circuit and an electric device according to any one of claims 1-6.
8. An electronic device comprising the low power system of claim 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222655040.2U CN218958613U (en) | 2022-10-09 | 2022-10-09 | Low-power consumption power supply circuit, low-power consumption system and electronic equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222655040.2U CN218958613U (en) | 2022-10-09 | 2022-10-09 | Low-power consumption power supply circuit, low-power consumption system and electronic equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218958613U true CN218958613U (en) | 2023-05-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202222655040.2U Active CN218958613U (en) | 2022-10-09 | 2022-10-09 | Low-power consumption power supply circuit, low-power consumption system and electronic equipment |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116600375A (en) * | 2023-07-18 | 2023-08-15 | 荣耀终端有限公司 | Electronic device power supply circuit and electronic equipment |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116600375A (en) * | 2023-07-18 | 2023-08-15 | 荣耀终端有限公司 | Electronic device power supply circuit and electronic equipment |
| CN116600375B (en) * | 2023-07-18 | 2023-10-20 | 荣耀终端有限公司 | Electronic device power supply circuit and electronic equipment |
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