CN215772542U - Power supply circuit and electronic equipment - Google Patents
Power supply circuit and electronic equipment Download PDFInfo
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- CN215772542U CN215772542U CN202121723647.9U CN202121723647U CN215772542U CN 215772542 U CN215772542 U CN 215772542U CN 202121723647 U CN202121723647 U CN 202121723647U CN 215772542 U CN215772542 U CN 215772542U
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
- G06F1/26—Power supply means, e.g. regulation thereof
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J1/00—Circuit arrangements for dc mains or dc distribution networks
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
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Abstract
The embodiment of the application discloses a power supply circuit and electronic equipment. The technical scheme provided by the embodiment of the application provides the first power supply to the power supply management module through the power interface by providing the data interface for accessing the second power supply and the power interface for accessing the first power supply, or the data interface provides a second power supply for the power supply management module, and meanwhile, the power supply detection module detects whether the power supply interface is connected with the first power supply or not, if the power supply interface is detected to be connected with the first power supply, the data interface is controlled to be disconnected with the power input end of the power management module, power is supplied to the power management module only through the power interface, if the fact that the power interface is connected with the first power supply is not detected, the data interface is communicated with the power supply input end, the data interface can supply power to the power supply management module, the interface of the input power supply is automatically switched, the conflict problem caused by the fact that the power supply interface and the data interface are simultaneously connected with the power supply is reduced, and normal work of the equipment is guaranteed.
Description
Technical Field
The embodiment of the application relates to the technical field of power supply, in particular to a power supply circuit and electronic equipment.
Background
The electronic device is generally connected to a first power source through a first power source interface, and supplies power to electric components in the electronic device. For electronic equipment such as an audio and video terminal and the like, a data interface such as TYPE-C and the like is provided for carrying out data communication with the electronic equipment, and in addition, the electronic equipment can be supplied with power through the data interface.
For the electronic equipment which provides the first power interface and the data interface at the same time, because the power supply of the first power interface and the data interface conflicts, if the power supply is connected to the first power interface and the data interface at the same time, and the power supply is input to the electronic equipment at the same time, the normal work of the electronic equipment is easily influenced.
SUMMERY OF THE UTILITY MODEL
The embodiment of the application provides a power supply circuit and electronic equipment, which are used for automatically switching an interface of an input power supply and ensuring normal work of the equipment.
In a first aspect, an embodiment of the present application provides a power supply circuit, which includes a power interface, a data interface, a power detection module, and a power management module, where:
the power supply interface is connected with a power supply input end of the power supply management module and used for accessing a first power supply and providing the first power supply for the power supply management module;
the data interface is connected with a first connecting end of the power supply detection module, a second connecting end of the power supply detection module is connected with a power supply input end of the power supply management module, and the data interface is used for accessing a second power supply and providing the second power supply for the power supply management module;
the detection end of the power supply detection module is connected with the power supply interface and used for detecting whether the power supply interface is connected with a first power supply or not, and when the power supply interface is connected with the first power supply, the data interface is controlled to be disconnected with the power supply input end of the power supply management module.
Furthermore, the power supply circuit further comprises a power supply logic module, the data interface is connected with the input end of the power supply logic module, and the output end of the power supply logic module is connected with the power input end of the power management module, and is used for converting the second power supply and sending the converted second power supply to the power management module.
Further, the power detection module includes a voltage detection circuit and a first switching device, wherein:
the detection end of the voltage detection circuit is connected with the power interface, the first connection end of the first switching device is connected with the data interface, the second connection end of the first switching device is connected with the input end of the power supply logic module, and the output end of the voltage detection circuit is connected with the control end of the first switching device;
the voltage detection circuit is used for detecting whether the power interface is connected with a first power supply or not according to the power voltage of the power interface, and controlling the first switching device to be switched off when the power interface is connected with the first power supply.
Furthermore, the power supply circuit also comprises a power supply conversion module, wherein the input end of the power supply conversion module is connected with the power supply management module, and the output end of the power supply conversion module is connected with the data interface;
the power supply conversion module is used for converting an external output power supply provided by the power supply management module into a direct current output power supply and providing the direct current output power supply for the data interface.
Furthermore, the third connecting end of the power supply detection module is connected with the output end of the power supply conversion module, the fourth connecting end of the power supply detection module is connected with the data interface, and the power supply detection module controls the data interface to be communicated with the power supply conversion module when the power supply interface is connected with the first power supply.
Furthermore, the power supply detection module further includes a second switch device, a first connection end of the second switch device is connected with an interface power supply output end of the power supply conversion module, a second connection end of the second switch device is connected with the data interface, a control end of the second switch device is connected with an output end of the voltage detection circuit, and the voltage detection circuit controls the second switch device to be turned on when the power supply interface is connected to the first power supply.
Further, the voltage detection circuit includes a voltage detection unit, a first resistor and a second resistor, a first connection end of the first resistor is connected to the power interface, a second connection end of the first resistor is connected to the first connection end of the second resistor, a second connection end of the second resistor is grounded, a voltage detection interface of the voltage detection unit is connected to a second connection end of the first resistor, a first output end of the voltage detection unit is connected to a control end of the first switching device, and a second output end of the voltage detection unit is connected to a control end of the second switching device.
Furthermore, the power supply circuit further comprises a circuit protection module, wherein a first detection end of the circuit protection module is connected with the data interface, and a second detection end of the circuit protection module is connected with an interface power supply output end of the power supply conversion module;
the circuit protection module is used for detecting a first voltage of the data interface and a second voltage of an interface power supply output end of the power supply conversion module, and when the first voltage is larger than the second voltage, the data interface and the power supply conversion module are controlled to be disconnected.
Further, the power conversion module includes a voltage comparison circuit and a third switching device, wherein:
a first detection end of the voltage comparison circuit is connected with the data interface and is used for detecting a first voltage of the data interface, and a second detection end of the voltage comparison circuit is connected with an interface power supply output end of the power conversion module and is used for detecting a second voltage of the interface power supply output end of the power conversion module;
the first connecting end of the third switching device is connected with the interface power supply output end of the power conversion module, and the second connecting end of the third switching device is connected with the data interface;
the voltage comparison circuit is used for controlling the third switching device to be turned off when the first voltage is greater than the second voltage.
In a second aspect, an embodiment of the present application provides an electronic device, including the power supply circuit according to any one of the first aspect, a memory, and one or more processors, where the power supply circuit is electrically connected to the memory and the processors, and is configured to supply power to the memory and the processors.
The embodiment of the application provides a power interface for connecting a first power supply and a data interface for connecting a second power supply, the first power supply can be provided for a power management module through the power interface, or the second power supply can be provided for the power management module through the data interface, the power management module can perform power conversion on the first power supply or the second power supply and output proper power to each electric component, meanwhile, a power detection module detects whether the power interface is connected with the first power supply, if the power interface is detected to be connected with the first power supply, the data interface is controlled to be disconnected with a power input end of the power management module, power is supplied to the power management module only through the power interface, if the power interface is not detected to be connected with the first power supply, the data interface is kept to be communicated with the power input end, the data interface can supply power to the power management module, and the situation that the power interface and the data interface simultaneously supply power to the power management module is reduced, the interface of the input power supply is automatically switched, so that the conflict problem caused by the fact that the power supply interface and the data interface are simultaneously connected with the power supply is reduced, and the normal work of the equipment is ensured.
Drawings
Fig. 1 is a schematic block diagram of a power supply circuit provided in an embodiment of the present application;
fig. 2 is a schematic circuit structure diagram of a power supply circuit according to an embodiment of the present disclosure;
fig. 3 is a block diagram of an electronic device according to an embodiment of the present disclosure.
Reference numerals: 1. a power interface; 2. a data interface; 3. a power supply detection module; 311. a voltage detection unit; 312. a first resistor; 313. a second resistor; 32. a first switching device; 33. a second switching device; 4. a power management module; 5. a power supply logic module; 6. a power conversion module; 7. a circuit protection module; 71. a voltage comparison circuit; 72. a third switching device; 81. a first diode; 82. a second diode; 8. a memory; 9. a processor; 10. a power supply circuit; 11. an input device; 12. and an output device.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, specific embodiments of the present application will be described in detail with reference to the accompanying drawings. It is to be understood that the specific embodiments described herein are merely illustrative of the application and are not limiting of the application.
In the description of the embodiments of the present application, unless explicitly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral part; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.
Fig. 1 shows a schematic block diagram of a power supply circuit provided in an embodiment of the present application, and as shown in fig. 1, the power supply circuit provided in this embodiment includes a power interface 1, a data interface 2, a power detection module 3, and a power management module 4. The power detection module 3 provided by this embodiment is provided with a first connection end, a second connection end, a third connection end, a fourth connection end and a detection end, and the power management module 4 is provided with a power input end, a power output end and an interface power supply output end.
In this embodiment, the power interface 1 is electrically connected to the power input terminal of the power management module 4, the power output port of the data interface 2 is connected to the first connection terminal of the power detection module 3, the second connection terminal of the power detection module 3 is connected to the power input terminal of the power management module 4, and the detection terminal of the power detection module 3 is electrically connected to the power interface 1.
The power interface 1 provided in this embodiment is used to access a first power supply and provide the first power supply to the power management module 4. The data interface 2 is used for accessing a second power supply and providing the second power supply for the power management module 4. The power detection module 3 is configured to detect whether the power interface 1 is connected to a first power source, and when it is detected that the power interface 1 is connected to the first power source, control the data interface 2 to be disconnected from the power input end of the power management module 4 (i.e., control the first connection end and the second connection end of the power detection module 3 to be disconnected), and when it is not detected that the power interface 1 is connected to the first power source, maintain the data interface 2 to be connected to the power input end of the power management module 4 (i.e., control the first connection end and the second connection end of the power detection module 3 to be connected), so as to maintain the data interface 2 to be connected to a power supply loop of the second power source output by the power management module 4.
Further, the power management module 4 is configured to perform power conversion on the received power (the first power or the second power), and supply power to each electrical component. For example, the power supply circuit is arranged in electronic equipment such as an audio/video terminal, a first power supply or a second power supply can be accessed through the power interface 1 or the data interface 2, and the power management module 4 converts the first power supply or the second power supply into a power supply suitable for each electric component in the electronic equipment and supplies power to the electric components.
Further, the power supply circuit provided in this embodiment further includes a power supply logic module 5, where the power supply logic module 5 is electrically connected between the data interface 2 and the power management module 4, and is configured to convert the first power output by the data interface 2. Specifically, the power input port of the data interface 2 is connected to the input end of the power supply logic module 5, and the output end of the power supply logic module 5 is connected to the power input end of the power management module 4, and is configured to convert the second power supply, convert the voltage and/or current of the second power supply into the voltage and/or current required by the power management module 4, and send the converted second power supply to the power management module 4.
Further, the power supply circuit that this embodiment provided still includes power conversion module 6, power conversion module 6 is provided with input and output, power conversion module 6's input is connected with power management module 4's interface power supply output, power conversion module 6's output is connected with data interface 2, specifically, power conversion module 6's output is connected in power detection module 3's third link, power conversion module 6's output is connected with data interface 2 through power detection module 3's third link and fourth link promptly. The power conversion module 6 is configured to convert the external output power provided by the power management module 4 into a dc output power, provide the dc output power to the data interface 2, and supply power to the external device connected to the data interface 2.
Specifically, the third connection end of the power detection module 3 provided in this embodiment is connected to the output end of the power conversion module 6, the fourth connection end of the power detection module 3 is connected to the data interface 2, when the power detection module 3 detects that the power interface 1 is connected to the first power source, the data interface 2 is controlled to be connected to the power conversion module 6 (i.e., the third connection end and the fourth connection end of the power detection module 3 are controlled to be disconnected), and when the power interface 1 is not detected to be connected to the first power source, the data interface 2 is kept connected to the power conversion module 6 (i.e., the third connection end and the fourth connection end of the power detection module 3 are controlled to be connected), so as to keep the power management module 4 connected to the power supply loop of the data interface 2 outputting the dc output power source.
Further, the power supply circuit provided in this embodiment further includes a circuit protection module 7, a first detection end of the circuit protection module 7 is connected to the data interface 2, and a second detection end is connected to the interface power supply output end of the power conversion module 6. The circuit protection module 7 is used for detecting a first voltage of the data interface 2 through the first detection end and a second voltage of the interface power supply output end of the power conversion module 6 through the second detection end, comparing the first voltage with the second voltage, and controlling the data interface 2 and the power conversion module 6 to be disconnected when the first voltage is greater than the second voltage.
Fig. 2 is a schematic circuit structure diagram of a power supply circuit provided in an embodiment of the present application, and fig. 2 is further configured on the basis of fig. 1, and as shown in fig. 2, the power detection module 3 provided in this embodiment includes a voltage detection circuit, a first switching device 32(MOS-SW1), and a second switching device 33(MOS-SW 2). In this embodiment, the detection end of the voltage detection circuit is used as the detection end of the power detection module 3, the first connection end and the second connection end of the first switch device 32 are used as the first connection end and the second connection end of the power detection module 3, and the first connection end and the second connection end of the second switch device 33 are used as the third connection end and the fourth connection end of the power detection module 3. The power interface 1 provided in this embodiment is a direct current power interface 1 (a 12V DC2.0 interface is taken as an example in the figure for description), the data interface 2 is a USB interface, such as a TYPE-A, TYPE-B, TYPE-C interface, and a TYPE-C interface is taken as an example in the figure for description, wherein the data interface 2 can input a 5V/9V/ 12V/20V second power and communicate with the power supply Logic module 5 based on a CC Logic communication protocol to determine an input second power voltage, the power supply conversion module 6 employs a 5V/2A output DC-DC conversion module, and the power supply Logic module 5 employs a PD & PMU power management chip (PD & pmulogic module).
The detection end of the voltage detection circuit is connected with the positive output end (the end outputting 12V power in the figure) of the power interface 1, the first connection end of the first switch device 32 is connected with the data interface 2, the second connection end of the first switch device 32 is connected with the input end of the power supply logic module 5, and one output end of the voltage detection circuit is connected with the control end of the first switch device 32. The voltage detection circuit is configured to detect whether the power interface 1 is connected to a first power supply according to a power voltage of the power interface 1, send a turn-off control signal to the first switching device 32 when the power interface 1 is connected to the first power supply to control the first switching device 32 to turn off, and send a turn-on control signal to the first switching device 32 when the power interface 1 is not connected to the first power supply to control the first switching device 32 to turn on.
Further, a first connection end of the second switching device 33 is connected to the interface power supply output end of the power conversion module 6, a second connection end of the second switching device 33 is connected to the data interface 2, and a control end of the second switching device 33 is connected to an output end of the voltage detection circuit. The voltage detection circuit sends a turn-on control signal to the second switching device 33 to control the second switching device 33 to turn on when the power interface 1 is connected to the first power supply, and sends a turn-off control signal to the second switching device 33 to control the second switching device 33 to turn off when the power interface 1 is not connected to the first power supply.
Further, the power interface 1 is connected to the power input terminal of the power management module 4 through a first diode 81(VT1), wherein an anode of the first diode 81 is connected to the power interface 1, a cathode of the first diode 81 is connected to the power input terminal of the power management module 4, an output terminal of the power supply logic module 5 is connected to the power input terminal of the power management module 4 through a second diode 82(VT2), an anode of the second diode 82 is connected to the output terminal of the power supply logic module 5, and a cathode of the second diode 82 is connected to the power input terminal of the power management module 4.
The Voltage detection circuit provided by this embodiment includes a Voltage detection unit 311(DC12V Voltage detection logic module), a first resistor 312(R1), and a second resistor 313(R2), wherein the Voltage detection unit 311 may be a Voltage detection chip or a micro-processing unit. A first connection end of the first resistor 312 serves as a detection end of the power detection module 3 and is electrically connected to an anode output end of the power interface 1, a second connection end of the first resistor 312 is electrically connected to a first connection end of the second resistor 313, a second connection end of the second resistor 313 is grounded, a voltage detection interface of the voltage detection unit 311 is connected to a second connection end of the first resistor 312, a first output end (Control logic level 1) of the voltage detection unit 311 is connected to a Control end of the first switch device 32, and a second output end (Control logic level 2) of the voltage detection unit 311 is connected to a Control end of the second switch device 33.
Specifically, the circuit protection module 7 provided in this embodiment includes a voltage comparison circuit 71 and a third switching device 72(MOS-SW3), where a first detection end of the voltage comparison circuit 71 is connected to the data interface 2 and is configured to detect a first voltage of the data interface 2, and a second detection end of the voltage comparison circuit 71 is connected to the interface power supply output end of the power conversion module 6 and is configured to detect a second voltage of the interface power supply output end of the power conversion module 6. The first connection end of the third switching device 72 is connected with the interface power supply output end of the power conversion module 6, and the second connection end of the third switching device 72 is connected with the data interface 2. The voltage comparison circuit 71 is configured to send an off control signal to the third switching device 72 to control the third switching device 72 to be off when the first voltage is greater than the second voltage, and send an on control signal to the third switching device 72 to control the third switching device 72 to be on when the first voltage is less than the second voltage.
Optionally, the switching devices (including the first switching device 32, the second switching device 33, and the third switching device 72) provided in this embodiment may be MOS transistors or triodes, for example, NMOS transistors are used as the switching devices, and gates, drains, and sources of the NMOS transistors are used as the control terminal, the first connection terminal, and the second connection terminal, and when the gates receive a high level signal, the first connection terminal and the second connection terminal are connected, and the NMOS transistors are connected, and when the gates receive a low level signal, the first connection terminal and the second connection terminal are disconnected, and the NMOS transistors are disconnected.
When the power interface 1 of the power supply circuit provided in this embodiment is not connected to the first power supply, and after the power interface 1 is divided by the first resistor 312 and the second resistor 313, the voltage detected by the voltage detection interface of the voltage detection unit 311 is low, and it is determined that the power interface 1 is not connected to the first power supply, the power supply circuit sends a conduction control signal to the first switching device 32 to control the first switching device 32 to be conducted. When the second power supply is accessed through the data interface 2, the data interface 2 communicates with the power supply logic module 5, determines the voltage of the accessed second power supply, converts the second power supply by the power supply logic module 5 (for example, converts the voltage of the second power supply from 20V to 12V), and sends the converted second power supply to the power management module 4. And at this time, the first voltage of the data interface 2 is greater than the second voltage of the interface power supply output end of the power conversion module 6, the voltage comparison circuit 71 sends a turn-off control signal to the third switching device 72, and the third switching device 72 is turned off.
When the first power supply is connected through the power interface 1, the power interface 1 directly supplies power to the power management module 4, and after the power interface 1 is divided by the first resistor 312 and the second resistor 313, the potential detected by the voltage detection interface of the voltage detection unit 311 rises, and it is determined that the power interface 1 is connected to the first power supply, a turn-off control signal is sent to the first switching device 32 to control the first switching device 32 to turn off, the power connection of the data interface 2 is cut off, and a turn-on control signal is sent to the second switching device 33 to control the second switching device 33 to turn on. If the data interface 2 does not access the external power supply, the first voltage of the data interface 2 is lower than the second voltage of the interface power supply output end of the power conversion module 6, the voltage comparison circuit 71 sends a conduction control signal to the third switching device 72, and the third switching device 72 is turned on. The power conversion module 6 converts the external output power provided by the power management module 4 into a dc output power (e.g., a dc output power of 5V 2A), and provides the dc output power to the data interface 2.
When the first power supply is connected through the power interface 1, if an external power supply (for example, an external power supply higher than 5V) with a voltage higher than the dc output power supply voltage is forcibly connected to the data interface 2, at this time, the first voltage of the data interface 2 is higher than the second voltage of the interface power supply output end of the power conversion module 6, the voltage comparison circuit 71 sends a turn-off control signal to the third switching device 72, and the third switching device 72 turns off, so as to cut off the internal power supply path of the data interface 2, thereby protecting the circuit.
Fig. 3 is a block diagram of an electronic device according to an embodiment of the present disclosure, and as shown in fig. 3, the electronic device includes a power supply circuit 10, an input device 11, an output device 12, a memory 8, and one or more processors 9 provided in this embodiment, where the power supply circuit 10 is electrically connected to the input device 11, the output device 12, the memory 8, and the processors 9, and is used to supply power to the input device 11, the output device 12, the memory 8, and the processors 9, and the electronic device is connected to a first power source or a second power source through the power supply circuit 10, and the power management module 4 in the power supply circuit 10 performs power conversion on the first power source or the second power source to supply power to electrical components (including the input device 11, the output device 12, the memory 8, and the processors 9) in the electronic device.
Wherein the memory 8 is used for storing one or more programs, which when executed by the one or more processors 9, cause the one or more processors 9 to implement the corresponding functions of the one or more programs. Wherein the input device 11, the output device 12, the memory 8 and the processor 9 may be connected by a bus or other means, which is exemplified in fig. 3, and the power supply circuit 10 may supply power to the input device 11, the output device 12, the memory 8 and the processor 9 through the bus. The memory 8 is a storage medium readable by a computing device and can be used for storing software programs and computer executable programs. The memory 8 may mainly include a program storage area and a data storage area, wherein the program storage area may store an operating system, an application program required for at least one function; the storage data area may store data created according to use of the device, and the like. Further, the memory 8 may include high speed random access memory 8, and may also include non-volatile memory 8, such as at least one piece of disk memory 8, flash memory device, or other non-volatile solid state memory 8. In some examples, memory 8 may further include memory 8 remotely located from processor 9, and these remote memories 8 may be connected to the device over a network. Examples of such networks include, but are not limited to, the internet, intranets, local area networks, mobile communication networks, and combinations thereof. The input means 11 may be used to receive input numeric or character information and to generate key signal inputs relating to user settings and function control of the device. The output device 12 may include a display device such as a display screen.
In the above, by providing the data interface 2 for connecting the power interface 1 for connecting the first power supply to the power management module 4, the first power supply can be provided to the power management module 4 through the power interface 1, or the second power supply can be provided to the power management module 4 through the data interface 2, the power management module 4 can perform power conversion on the first power supply or the second power supply to output appropriate power to each electrical component, meanwhile, the power detection module 3 detects whether the power interface 1 is connected to the first power supply, if it is detected that the power interface 1 is connected to the first power supply, the data interface 2 is controlled to be disconnected from the power input end of the power management module 4, power is supplied to the power management module 4 only through the power interface 1, if it is not detected that the power interface 1 is connected to the first power supply, the data interface 2 is kept connected to the power input end, and power can be supplied to the power management module 4 through the data interface 2, the situation that the power supply interface 1 and the data interface 2 supply power to the power management module 4 at the same time is reduced, the interfaces of the input power supply are automatically switched, the conflict problem caused by the fact that the power supply interface 1 and the data interface 2 are connected into the power supply at the same time is reduced, and normal work of equipment is guaranteed. Meanwhile, when the first power supply is connected, the power supply management module 4 outputs an external output power supply to the power supply conversion module 6, the external output power supply is converted into a direct current output power supply by the power supply conversion module 6, the direct current output power supply is provided for the data interface 2, and the external device connected to the data interface 2 can obtain the direct current output power supply from the data interface 2 to serve as a power supply.
The foregoing is considered as illustrative of the preferred embodiments of the invention and the technical principles employed. The present application is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present application has been described in more detail with reference to the above embodiments, the present application is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present application, and the scope of the present application is determined by the scope of the claims.
Claims (10)
1. The utility model provides a power supply circuit which characterized in that, includes power interface, data interface, power detection module and power management module, wherein:
the power supply interface is connected with a power supply input end of the power supply management module and used for accessing a first power supply and providing the first power supply for the power supply management module;
the data interface is connected with a first connecting end of the power supply detection module, a second connecting end of the power supply detection module is connected with a power supply input end of the power supply management module, and the data interface is used for accessing a second power supply and providing the second power supply for the power supply management module;
the detection end of the power supply detection module is connected with the power supply interface and used for detecting whether the power supply interface is connected with a first power supply or not, and when the power supply interface is connected with the first power supply, the data interface is controlled to be disconnected with the power supply input end of the power supply management module.
2. The power supply circuit according to claim 1, further comprising a power supply logic module, wherein the data interface is connected to an input terminal of the power supply logic module, and an output terminal of the power supply logic module is connected to a power input terminal of the power management module, and is configured to convert the second power supply and send the converted second power supply to the power management module.
3. The power supply circuit of claim 2, wherein the power detection module comprises a voltage detection circuit and a first switching device, wherein:
the detection end of the voltage detection circuit is connected with the power interface, the first connection end of the first switching device is connected with the data interface, the second connection end of the first switching device is connected with the input end of the power supply logic module, and the output end of the voltage detection circuit is connected with the control end of the first switching device;
the voltage detection circuit is used for detecting whether the power interface is connected with a first power supply or not according to the power voltage of the power interface, and controlling the first switching device to be switched off when the power interface is connected with the first power supply.
4. The power supply circuit according to claim 3, further comprising a power conversion module, wherein an input terminal of the power conversion module is connected to the power management module, and an output terminal of the power conversion module is connected to the data interface;
the power supply conversion module is used for converting an external output power supply provided by the power supply management module into a direct current output power supply and providing the direct current output power supply for the data interface.
5. The power supply circuit according to claim 4, wherein a third connection terminal of the power detection module is connected to an output terminal of the power conversion module, a fourth connection terminal of the power detection module is connected to the data interface, and the power detection module controls the data interface to communicate with the power conversion module when the power interface is connected to a first power source.
6. The power supply circuit according to claim 5, wherein the power detection module further includes a second switching device, a first connection terminal of the second switching device is connected to the interface power supply output terminal of the power conversion module, a second connection terminal of the second switching device is connected to the data interface, a control terminal of the second switching device is connected to the output terminal of the voltage detection circuit, and the voltage detection circuit controls the second switching device to be turned on when the power interface is connected to the first power supply.
7. The power supply circuit according to claim 6, wherein the voltage detection circuit includes a voltage detection unit, a first resistor and a second resistor, a first connection end of the first resistor is connected to the power interface, a second connection end of the first resistor is connected to a first connection end of the second resistor, a second connection end of the second resistor is grounded, a voltage detection interface of the voltage detection unit is connected to a second connection end of the first resistor, a first output end of the voltage detection unit is connected to the control end of the first switching device, and a second output end of the voltage detection unit is connected to the control end of the second switching device.
8. The power supply circuit according to claim 4, wherein the power supply circuit further comprises a circuit protection module, a first detection terminal of the circuit protection module is connected to the data interface, and a second detection terminal of the circuit protection module is connected to the interface power supply output terminal of the power conversion module;
the circuit protection module is used for detecting a first voltage of the data interface and a second voltage of an interface power supply output end of the power supply conversion module, and when the first voltage is larger than the second voltage, the data interface and the power supply conversion module are controlled to be disconnected.
9. The power supply circuit of claim 8, wherein the power conversion module comprises a voltage comparison circuit and a third switching device, wherein:
a first detection end of the voltage comparison circuit is connected with the data interface and is used for detecting a first voltage of the data interface, and a second detection end of the voltage comparison circuit is connected with an interface power supply output end of the power conversion module and is used for detecting a second voltage of the interface power supply output end of the power conversion module;
the first connecting end of the third switching device is connected with the interface power supply output end of the power conversion module, and the second connecting end of the third switching device is connected with the data interface;
the voltage comparison circuit is used for controlling the third switching device to be turned off when the first voltage is greater than the second voltage.
10. An electronic device comprising the power supply circuit of any one of claims 1-9, a memory, and one or more processors, the power supply circuit being electrically connected to the memory and the processors for powering the memory and the processors.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121723647.9U CN215772542U (en) | 2021-07-27 | 2021-07-27 | Power supply circuit and electronic equipment |
| PCT/CN2022/108225 WO2023005969A1 (en) | 2021-07-27 | 2022-07-27 | Power supply circuit and electronic device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121723647.9U CN215772542U (en) | 2021-07-27 | 2021-07-27 | Power supply circuit and electronic equipment |
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| Publication Number | Publication Date |
|---|---|
| CN215772542U true CN215772542U (en) | 2022-02-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121723647.9U Active CN215772542U (en) | 2021-07-27 | 2021-07-27 | Power supply circuit and electronic equipment |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN215772542U (en) |
| WO (1) | WO2023005969A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023005969A1 (en) * | 2021-07-27 | 2023-02-02 | 广州视源电子科技股份有限公司 | Power supply circuit and electronic device |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107492934B (en) * | 2017-09-19 | 2024-01-30 | 上海丹焱信息科技有限公司 | Electronic device with power supply circuit |
| CN109546694A (en) * | 2017-09-22 | 2019-03-29 | 深圳光峰科技股份有限公司 | Power supply unit, method of supplying power to and electronic device |
| US11088565B2 (en) * | 2018-09-11 | 2021-08-10 | Dell Products L.P. | Load-based management of multiple dc power sources |
| CN210377453U (en) * | 2019-11-15 | 2020-04-21 | 深圳市巨戈科技有限公司 | Double TYPE-C interface control circuit |
| CN215772542U (en) * | 2021-07-27 | 2022-02-08 | 广州视源电子科技股份有限公司 | Power supply circuit and electronic equipment |
-
2021
- 2021-07-27 CN CN202121723647.9U patent/CN215772542U/en active Active
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2022
- 2022-07-27 WO PCT/CN2022/108225 patent/WO2023005969A1/en unknown
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023005969A1 (en) * | 2021-07-27 | 2023-02-02 | 广州视源电子科技股份有限公司 | Power supply circuit and electronic device |
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| Publication number | Publication date |
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| WO2023005969A1 (en) | 2023-02-02 |
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