CN115441572A - Power supply circuit for controller and electronic device - Google Patents

Abstract

The present disclosure relates to power supply circuits, and particularly to a power supply circuit and an electronic device. The power supply circuit includes: a first transmission interface coupled to a first power input terminal; a second transmission interface coupled to a second power input terminal; and a multi-power input multiplexing switch coupled to the first and second transmission interfaces and configured to transmit a corresponding status indication and output power to the controller in accordance with receiving a first input power via the first transmission interface or a second input power via the second transmission interface, such that the controller operates in one of a first performance mode and a second performance mode based on the output power in response to the status indication, the power consumption in the second performance mode being less than the power consumption in the first performance mode. The invention can realize the access of a plurality of paths of input power supplies and the performance mode switching of the controller.

Description

Power circuits and electronics for controllers

technical field

The present application relates to the technical field of power circuits, in particular to power circuits and electronic equipment for controllers.

Background technique

Electronic equipment generally needs an external power supply for power supply, and the external power supply provides voltage for units such as a controller chip in the electronic equipment to supply power. Some electronic devices with accumulators inside also need to be charged by an external power source, and the external power source can also supply power to the electronic device during charging. The number of external power supply is generally one, such as common mobile phones and notebooks are powered by an external power supply through a power interface. There are also a small number of electronic devices that support multi-power input power supply, but the power supply circuits of these electronic devices that support multi-power input are relatively complex and have single functions, so that active identification and switching cannot be realized.

Contents of the invention

The present application provides a power supply circuit and electronic equipment for a controller, which can receive and provide power from the input power of the first transmission interface or the second transmission interface through a multi-power input multiplexing switch, and has a simple circuit structure. And it can be realized that the power supply mode of the received input power is transmitted to the controller, and the controller can identify and enter different performance modes. Further, the automatic switching of the input power of the connected first transmission interface or the second transmission interface can be completed, and the second transmission interface is switched to the first transmission interface.

In a first aspect, a power supply circuit for a controller is provided. The power circuit includes: a first transmission interface coupled to a first power input terminal; a second transmission interface coupled to a second power input terminal; and a multi-power input multiplexing switch coupled to the first transmission interface and the second transmission interface, and configured to transmit a corresponding status to the controller according to receiving a first input power via the first transmission interface or receiving a second input power via the second transmission interface indicating and outputting power, such that the controller operates in one of a first performance mode and a second performance mode based on the output power in response to the status indication, the second performance mode consumes less power than the power consumption in the first performance mode described above.

In some embodiments, the multi-power input multiplexing switch is configured to: when receiving the first input power via the first transmission interface, transmit a first status indication to the controller and communicate with the A first output power supply corresponding to a first input power supply, such that the controller is responsive to the first status indication to operate in the first performance mode based on the first output power supply; and upon transmission via the second When the interface receives the second input power but does not receive the first input power through the first transmission interface, it transmits a second status indication and a first input corresponding to the second input power to the controller. Two output power sources, such that the controller is responsive to the second status indication to operate in the second performance mode based on the second output power source.

In some embodiments, the multi-power input multiplexing switch is configured to: receive the second input power through the second transmission interface after receiving the first input power through the first transmission interface When power is turned on, the first output power is kept delivered to the controller such that the controller remains in the first performance mode.

In some embodiments, the multi-power input multiplexing switch is configured to: receive the first input through the first transmission interface after receiving the second input power through the second transmission interface When power is turned on, the first status indication and the first output power are transmitted to the controller, causing the controller to transition from the second performance mode to the first performance mode.

In some embodiments, the power supply circuit further includes: a power transfer control unit coupled to the first transmission interface and configured to generate a power transfer state according to a first input power received via the first transmission interface signal, and transmit the power transfer status signal to the controller, so that the controller operates according to the power transfer status signal.

In some embodiments, the power transfer control unit is configured to generate the power transfer status signal according to whether the first input power complies with the PD2.0 protocol or the PD3.0 protocol.

In some embodiments, the power supply circuit further includes: a buck-boost unit, coupled to the multi-power input multiplexing switch, and configured to receive the output power, and boost and buck the output power to generating a power supply; and a power management unit coupled to the buck-boost unit and configured to receive the power supply and supply power to the controller based on the power supply.

In some embodiments, the power circuit further includes: an external power interface configured to receive an external power and transmit the external power to the buck-boost unit, so that the controller operates in the first performance mode work in.

In some embodiments, the power circuit further includes: a first unidirectional power switch coupled to the first transmission interface; and a second unidirectional power switch coupled to the second transmission interface.

In some embodiments, the first transmission interface includes a power supply Type-C interface, and the second transmission interface includes a Type-C/DP interface.

In a second aspect, an electronic device is provided. The electronic device includes: a controller; and a power circuit according to any one of the embodiments of the present invention.

In some embodiments, the controller is configured to make the second transmission interface be in DP mode or USB OTG mode when working in the first performance mode.

In some embodiments, the electronic device includes a development board.

According to the embodiment of the present invention, through the first transmission interface and the second transmission interface, it can be coupled to the first power input terminal or the second power input terminal, and the first input power or the second input power can be connected, and then through The multi-power input multiplexing switch can receive the power of the first transmission interface or the second transmission interface, and provide the power to the controller for power supply and startup, that is, this application can support the power of the first transmission interface or the second transmission interface. Input power access and startup of the controller. At the same time, the multi-power input multiplexing switch outputs the status indication of the currently received input power to the controller, and the controller enters a specific performance mode according to the status indication, so that the controller enters different performance modes according to different input power sources.

The relevant descriptions of the above-mentioned content of the invention are only an overview of the technical solution of the present application. In order to allow those skilled in the art to understand the technical solution of the application more clearly, it can be implemented according to the text of the description and the content recorded in the drawings, and in order to let those skilled in the art The above purpose and other purposes, features and advantages of the present application can be more easily understood, and will be described below in conjunction with specific implementation methods and accompanying drawings of the present application.

Description of drawings

The accompanying drawings are only used to illustrate the principles, implementations, applications, features and effects of the specific embodiments of the present application and other related contents, and should not be considered as limitations on the present application.

FIG. 1 is a schematic block diagram illustrating a power supply circuit according to an embodiment of the present disclosure;

FIG. 2 is another schematic block diagram illustrating a power supply circuit according to an embodiment of the present disclosure.

detailed description

In order to describe in detail the possible application scenarios, technical principles, specific solutions that can be implemented, goals and effects that can be achieved, etc., the following will be described in detail in conjunction with the listed specific embodiments and accompanying drawings. The embodiments described herein are only used to illustrate the technical solutions of the present application more clearly, so they are only examples, and cannot be used to limit the protection scope of the present application.

Reference herein to an "embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the present application. The word "embodiment" appearing in various positions in the specification does not necessarily refer to the same embodiment, nor does it specifically limit its independence or relationship with other embodiments. In principle, in this application, as long as there is no technical contradiction or conflict, each technical feature mentioned in each embodiment can be combined in any way to form a corresponding implementable technical solution.

Unless otherwise defined, the meanings of the technical terms used herein are the same as those commonly understood by those skilled in the art to which the application belongs; the use of relevant terms herein is only to describe specific embodiments, and is not intended to limit the application .

In the description of this application, the term "and/or" is an expression used to describe the logical relationship between objects, indicating that there may be three relationships, such as A and/or B, which means: there is A, there is B, and There are three situations A and B at the same time. In addition, the character "/" in this article generally indicates that the contextual objects are a logical relationship of "or".

In this application, terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply that there is a relationship between these entities or operations. Any actual quantitative, primary or sequential relationship.

Without further limitation, in this application, the words "including", "comprising", "having" or other similar expressions are intended to cover a non-exclusive inclusion, and these expressions do not exclude Additional elements may also be present in a process, method, or product that includes the stated elements, so that a process, method, or product that includes a series of elements may include not only those defined elements, but also other elements that are not explicitly listed , or also include elements inherent in such a process, method, or product.

In the present application, expressions such as "greater than", "less than", and "exceeding" are understood as excluding the original number; expressions such as "above", "below", and "within" are understood as including the original number. In addition, in the description of the embodiments of the present application, "multiple" means more than two (including two), and similar expressions related to "many" are also understood in this way, such as "multiple groups", " many times", etc., unless otherwise expressly and specifically defined.

As mentioned in the background art, the existing power switching power supply circuit is relatively complex, and has a single function, and cannot realize active identification and switching. However, in the present application, the voltages of different transmission interfaces can be received and supplied by the multi-power input multiplexing switch, and the circuit structure is simple. In addition, the power supply mode of the received transmission interface can be identified and different performance modes can be entered. The specific implementation manner is described below:

FIG. 1 is a schematic block diagram illustrating a power supply circuit 100 according to an embodiment of the present disclosure. As shown in FIG. 1 , the power circuit 100 includes a first transmission interface 101 , a second transmission interface 102 , and a multi-power input multiplexing switch 103 .

The first transmission interface 101 is coupled to a first power input terminal 201 .

The second transmission interface 102 is coupled to a second power input terminal 202 .

The multiple power supply input multiplexing switch 103 is coupled to the first transmission interface 101 and the second transmission interface 102 . The multi-power input multiplexing switch 103 is configured to transmit the corresponding A status indication and output power such that the controller 301 operates in one of a first performance mode and a second performance mode based on the output power in response to the status indication. Power consumption in the second performance mode is less than power consumption in the first performance mode.

In some embodiments, different input power sources have different power supply modes, and the power supply mode indicates the external power supply capability of the input power source, and different power supply modes correspond to different state indications. The state indication is used to indicate the power supply mode of the first input power supply and the second input power supply currently received, and the power supply mode includes power, voltage magnitude, current magnitude and the like. It should be noted that receiving means that the multi-power input multiplexing switch 103 uses the first input power supply voltage to the first transmission interface 101 or the second input power supply voltage to the second transmission interface 102 and outputs the power to the controller 301, The controller 301 can then get the power and start up. Coupling in this application means that the first power input terminal 201 is electrically connected to the first transmission interface 101 or the second power input terminal 202 is electrically connected to the second transmission interface 102. At this time, the voltage of the first input power or the second input power Connected to the first transmission interface 101 or connected to the input of the multi-power input multiplexing switch 103, the multi-power input multiplexing switch 103 can detect the power supply mode of the connected first input power and the second input power, at this time If the input power is not received, then the multi-power input multiplexing switch 103 decides whether to receive the input power according to the power supply mode of the first input power or the second input power, and the received input power can output power to the controller 301 for use.

The controller 301 includes a first performance mode and a second performance mode, and the power consumption in the second performance mode is smaller than the power consumption in the first performance mode. The first performance mode can be considered as a high-performance mode, and the second performance mode can be considered as a low-performance mode. The performance level and power consumption in the first performance mode are higher than those in the low-performance mode, which requires higher voltage and greater current support. . Generally, the initial mode when the controller gets the voltage to start is the low performance mode. Then the controller judges the power supply mode of the input power supply according to the state indication. If it is an input power supply with strong power supply capability, the controller 301 responds to the state indication to work in the first performance mode, that is, to enter the high-performance first performance mode. . If it is an input power source with weak power supply capability, it works in the second performance mode. Thus, the controller completes identification of the state indication of the input power and realizes working in different performance modes according to different input power.

The present invention does not limit the power supply modes of the first input power supply and the second input power supply. For example, the first input power supply can be both input power supplies with strong power supply capabilities or both input power supplies with weak power supply capabilities, or one of the input power supplies can be The input power supply with strong power supply capability, and the other is the input power supply with weak power supply capability. In some embodiments, the first input power source is strong and the second input power source is weak. At this time, the multi-power input multiplexing switch is configured to: when receiving the first input power via the first transmission interface, transmit a first status indication and a a first output power supply corresponding to the power supply, such that the controller responds to the first status indication to operate in the first performance mode based on the first output power supply; and upon receiving via the second transmission interface When the second input power does not receive the first input power through the first transmission interface, transmit a second status indication and a second output power corresponding to the second input power to the controller , causing the controller to operate in the second performance mode based on the second output power supply in response to the second state indication. That is, in this embodiment, the first transmission interface and the first input power correspond to the first performance mode, and the controller enters the first performance mode with high performance and high power consumption when receiving the first input power with strong power supply capability. As for the second performance mode corresponding to the second transmission interface and the second input power, the controller enters the second performance mode with low performance and low power consumption when receiving the second input power with weak power supply capability.

In some embodiments, the multi-power input multiplexing switch is configured to: receive the second input power through the second transmission interface after receiving the first input power through the first transmission interface When power is turned on, the first output power is kept delivered to the controller such that the controller remains in the first performance mode. In this embodiment, the priority of the first transmission interface and the first input power is higher than that of the second transmission interface and the second input power, and the priority may be determined according to the voltage and current of the external power connected to the transmission interface 101 Or the power state is determined, for example, a high priority is given to a voltage, current or power, and a low priority is given to a small voltage, current or current. Or in some embodiments, because the performance of the transmission interface is different, one of them can be set as the main power supply port, the main power supply port has a high priority, and the other is set as a slave power supply port, and the slave power supply port is a low priority class. After receiving the first input power, the controller is in the first performance mode at this time, and then when the second input power is connected, the reception of the first input power and the output of the first output power remain unchanged, so that The controller remains in said first performance mode, ie in high performance mode.

In some embodiments, the multi-power input multiplexing switch is configured to: receive the first input through the first transmission interface after receiving the second input power through the second transmission interface When power is turned on, the first status indication and the first output power are transmitted to the controller, causing the controller to transition from the second performance mode to the first performance mode. In this embodiment, the priority of the first transmission interface and the first input power is higher than that of the second transmission interface and the second input power, and when the second input power is received, the controller is in the second performance model. Then when the first input power is connected, the multi-power input multiplexing switch 103 switches to the first input power and outputs the first output power, and transmits the first state indication to the controller, so that the controller is switched from the second performance mode to In the first performance mode, the controller completes the switching from the second performance mode to the first performance mode according to the input power condition. When the multi-power input multiplexing switch 103 receives an external power supply with higher voltage and larger current, it can support the controller 301 to enter the high-performance mode, and the output status indication of the multi-power input multiplexing switch to the control By using the controller 301, the controller can switch from the low-performance mode to the high-performance mode, so that the controller 301 can complete the performance switching according to the received power supply modes of different input power sources.

In some embodiments, the multi-power input multiplexing switch 103 judges and switches the power supply mode of the first input power supply based on the first input power supply voltage connected to the first transmission interface 101, the voltage of the first input power supply Higher than the voltage of the second input power supply, when the first input power supply is connected and the voltage is higher than the second input power supply, the multi-power supply input multiplexing switch 103 can switch the input power supply from the second output power supply to the first output power supply, And outputting the first state indication to the controller, the controller 301 enters the first performance mode.

FIG. 2 is another schematic block diagram illustrating a power supply circuit according to an embodiment of the present disclosure. As shown in FIG. 2 , the power supply circuit 100 of this embodiment further includes a power transfer control unit 105 .

A power transfer control unit 105 is coupled to said first transmission interface 101 . The power transmission control unit 105 is configured to generate a power transmission status signal according to the first input power received via the first transmission interface 101, and transmit the power transmission status signal to the controller 301, so that the control The controller 301 works according to the power transfer status signal.

In this embodiment, the controller 301 can know the power supply of the connected input power supply according to the received power transmission state signal. The controller 301 may determine whether to enter the first performance mode or the second performance mode according to the power transmission state signal, for example, enter the first performance mode after the power in the power transmission state signal is greater than a certain preset value. Accurate power parameters can be obtained through the power transmission control unit 105, and at this time the controller can obtain accurate power parameters through the power transmission status signal, so as to realize more accurate input power judgment and ensure that the corresponding performance mode can be entered.

In some embodiments, the power transfer control unit 105 is configured to generate the power transfer status signal according to whether the first input power complies with the PD2.0 protocol or the PD3.0 protocol. At this time, the corresponding power transmission control unit 105 may be a PD controller 105, and the full name of PD is USB Power Delivery. Through the PD controller 105, communication with the PD-type input power supply can be realized, so that the power supply of the PD-type input power supply can be identified, and the power transmission status signal is the PD status output signal at this time. After receiving the PD state output signal, the controller 301 can know the power supply of the connected PD type input power supply. The controller 301 may determine whether to enter the high-performance mode according to the power supply.

In some embodiments, the power supply circuit 100 may further include a buck-boost unit 106 and a power management unit 107 . The buck-boost unit 106 is coupled to the multi-power input multiplexing switch 103 . The buck-boost unit 106 is configured to receive the output power, and buck-boost the output power to generate a power supply. A power management unit 107 is coupled to the buck-boost unit 106 . The power management unit 107 is configured to receive the power supply, and supply power to the controller based on the power supply.

The buck-boost unit 106 can change the received voltage to a preset voltage value, so as to meet the voltage requirements of subsequent circuits. The voltage output by the buck-boost unit 106 can be directly provided to the controller 301 for use, and the controller 301 can be started after being powered on. In addition, the voltage output by the buck-boost unit 106 can be managed by the power management unit 107 . The power management unit 107 is used to implement more complex power management, such as outputting multiple different voltages to the controller 301 , and can cut off the voltage in time when the voltage is abnormal to ensure the voltage safety of the controller 301 .

In some embodiments, the power circuit 100 may further include an external power interface 108 . The external power interface 108 is configured to receive external power and transmit the external power to the buck-boost unit so that the controller works in the first performance mode.

Through the external power interface 108 , an external power supply can provide voltage (ie power supply) to the buck-boost unit 106 , and then the buck-boost unit 106 can provide voltage to the controller 301 . In some embodiments, the controller 301 is configured to enter the first performance mode after detecting that the external power supply is a preset device. The preset device is an external power supply that meets the voltage and current requirements, and the detection can be performed through an information transmission interface between the controller 301 and the external power supply interface 108, such as an I2C interface. In actual implementation, the information transmission interface of the external power interface 108 can be set on an interface board, and then connected to the controller 301 through an interface connection line, so as to realize the information transmission between the controller 301 and the external power interface 108 . When power is supplied through the external power supply interface 108, the first transmission interface 101 and the second transmission interface 102 can realize the function of non-power supply, such as the function of information transmission can be realized. At this time, the information transmission pin of the controller 301 (such as USB data pin, DP data pin, etc.) can be connected to the first transmission interface 101 and the second transmission interface 102, and then the external device can be connected to the first transmission interface 101 and the second transmission interface 102 and perform information transmission and communication with the controller information exchange.

In some embodiments, the power circuit 100 may further include a first unidirectional power switch 109 and a second unidirectional power switch 110 . A first unidirectional power switch 109 is coupled to the first transmission interface. A second unidirectional power switch 110 is coupled to the second transmission interface.

The first unidirectional power switch 109 or the second unidirectional power switch 110 outputs a voltage to the first transmission interface 101 or the second transmission interface 102 in response to the control of the controller 301 . When a transmission interface is not connected to an input power source, the controller 301 can control the unidirectional power switch connected to the transmission interface, and then the unidirectional power switch can output voltage to the transmission interface, so that the transmission interface It can supply power to the outside, that is, supply power to devices connected to the transmission interface 101 . It should be noted that the voltage or power supply voltage mentioned in this application refers to the power supply voltage, which is the voltage used for power supply and providing electric energy, rather than the varying level used for information transmission.

In some embodiments, the first transmission interface 101 or the second transmission interface 102 is a USB interface, and the controller 301 is configured to enable the USB interface when detecting that the external power supply interface 108 is connected to an external power supply Support USBOTG mode. OTG is the abbreviation of On-The-Go, which is mainly used in the connection between different devices or mobile devices for data exchange. That is, after the external power supply interface 108 is connected to an external power supply, the external device can be connected to the transmission interface through USB, and at this time, the USB data pin of the first transmission interface 101 or the second transmission interface 102 is connected to the controller, so that the controller 301 and OTG data exchange with external devices.

In some embodiments, the first transmission interface 101 or the second transmission interface 102 is a Type-C interface. In other embodiments, the first transmission interface 101 or the second transmission interface 102 may be other types of USB interfaces. The first transmission interface 101 or the second transmission interface 102 can all be Type-C interfaces, or one of the first transmission interface 101 or the second transmission interface 102 is a Type-C interface, and the other is another type of interface, such as other types USB interface.

In some embodiments, the transmission interfaces are all Type-C interfaces, the first transmission interface includes a power supply Type-C interface, and the second transmission interface includes a Type-C/DP interface, that is, the main power supply port Power Type-C port, and Type-C/DP port for slave power supply/display/OTG, where DP refers to the DisplayPort interface for display. The power supply priority of the Power Type-C port is higher than that of the Type-C/DP port. In order to realize the data transmission function of Type-C, the data pin of the Type-C interface should be connected with the Type-C data pin of the controller. If the display function is to be realized, the DP pin of the Type-C interface should be connected to the DP data pin of the controller. The controller can enter high-performance mode or low-performance mode by detecting the power supply mode of each Type-C port. This application supports simultaneous insertion of multiple Type-C ports without affecting each other. The priority of the main power supply port is high, and the main power supply port is preferentially used for power supply. It can also include an external power supply interface 108, which can simultaneously support the external power supply and the interface small board power supply, and realize switching of the high-performance mode through I2C detection.

When only one Power Type-C port and Type-C/DP port are connected, both support the power supply start of the controller 301 . However, when the Type-C/DP port is connected to the input power, the controller 301 enters a low-performance mode (the supply current depends on the input power), and only supports common applications. When the Power Type-C is connected to the input power supply, the controller 301 judges that the input power supply is in the PD2.0/PD3.0 protocol power supply mode through the PD status output signal of the PD controller 301, and the controller 301 enters the high status according to the PD status output signal. Performance mode, can support 5V/3A, 12V/2A, 20V/0.9A power supply. If it is in the non-PD power supply mode when the Power Type-C is connected, the controller 301 enters the low-performance mode (supporting current depends on the input power supply).

When both the Power Type-C port and Type-C/DP are connected, the default is Power Type C power supply, and the Type C/DP power supply is disconnected; no matter which Power Type-C port or Type-C/DP is plugged into the input power first, The power supply priority of the Power Type-C port is the highest. When Type-C/DP supplies power, and then inserts Power Type-C, the hardware will automatically switch to Power Type-C port for power supply. At this time, the Type-C/DP port is only used for DP or USB OTG (as a USB HOST, that is, a USB master device, the Type-C/DP supplies power to the outside, that is, the output voltage is switched through the one-way power switch 109); when the Power Type C When the input power is plugged into the port first, the Power Type C realizes the power supply. Subsequent Type-C/DP is plugged into the input power supply, or the Power Type C power supply is maintained, and the power supply path remains unchanged.

When the external power supply and the interface small board supply power (5V/4.5A) to the circuit through the 40pin pin, the controller 301 enters the high-performance mode by detecting the I2C on the small board. When the external power supply and the interface board are connected to the power supply, the Type-C/DP port is allowed to be connected, and it can support DP and USB OTG applications.

In a second aspect, an embodiment of the present disclosure provides an electronic device. The electronic device includes a controller 301 and the power supply circuit 100 according to any one of the embodiments of the present invention. The electronic device not only includes the power circuit 100, but also includes a casing for protecting the power circuit 100, a human-computer interaction input device or a display device, etc., and a program with a preset function stored in the controller 301, which can complete the preset function. Function. The electronic device with the power supply circuit 100 of the present application can realize the access of multiple input power sources, and at the same time, the controller 301 can enter different performance states according to the power supply mode of the input power sources.

In some embodiments, the controller 301 is configured to make the second transmission interface be in DP mode or USB OTG mode when working in the first performance mode. That is, when the first transmission interface is connected to the first input power supply or the external power supply interface 108 is connected to the external power supply, the controller 301 is in the first performance mode at this time, and the second transmission interface does not supply power at this time, which can make the second The transmission interface is in DP mode or USB OTG mode, that is, external devices can be connected through the second transmission interface 102 .

In some embodiments, the electronic device includes a development board. A development board is a circuit board with a power supply circuit 100 and a controller 301 , and a developer can write a development program in the controller 301 to complete further development work on the development board. The development board with the power supply circuit 100 of the present application can realize the access of multiple input power sources, and at the same time, the controller 301 can enter different performance states according to the power supply mode of the input power sources.

Finally, it should be noted that although the above-mentioned embodiments have been described in the specification text and drawings of the present application, the scope of protection of the patent of the present application cannot be limited thereby. Any technical solution based on the substantive concept of this application, using the equivalent structure or equivalent process replacement or modification of the content recorded in the text and drawings of this application, and directly or indirectly implementing the technical solutions of the above embodiments in Other relevant technical fields, etc., are included in the patent protection scope of this application.

Claims (13)

1. A power supply circuit for a controller, comprising:

a first transmission interface coupled to a first power input terminal;

a second transmission interface coupled to a second power input terminal; and

a multi-power input multiplexing switch coupled to the first and second transmission interfaces and configured to transmit a corresponding status indication and output power to the controller in accordance with receiving a first input power via the first transmission interface or a second input power via the second transmission interface, such that the controller operates in one of a first performance mode and a second performance mode based on the output power in response to the status indication, the power consumption in the second performance mode being less than the power consumption in the first performance mode.

2. The power supply circuit of claim 1, wherein the multiple power input multiplexing switch is configured to:

upon receiving the first input power via the first transmission interface, transmitting a first status indication and a first output power corresponding to the first input power to the controller such that the controller operates in the first performance mode based on the first output power in response to the first status indication; and

when the second input power is received via the second transmission interface without receiving the first input power via the first transmission interface, transmitting a second status indication and a second output power corresponding to the second input power to the controller such that the controller operates in the second performance mode based on the second output power in response to the second status indication.

3. The power supply circuit of claim 2, wherein the multiple power input multiplexing switch is configured to:

when the second input power is received via the second transmission interface after the first input power is received via the first transmission interface, the first output power is kept transmitted to the controller, so that the controller is kept in the first performance mode.

4. The power supply circuit of claim 2, wherein the multiple power input multiplexing switch is configured to:

when the first input power is received through the first transmission interface after the second input power is received through the second transmission interface, the first status indication and the first output power are transmitted to the controller, so that the controller is switched from the second performance mode to the first performance mode.

5. The power supply circuit of claim 1, further comprising:

a power delivery control unit coupled to the first transmission interface and configured to generate a power delivery status signal according to a first input power source received via the first transmission interface and to deliver the power delivery status signal to the controller such that the controller operates according to the power delivery status signal.

6. The power supply circuit of claim 5, wherein the power transfer control unit is configured to generate the power transfer status signal according to whether the first input power supply conforms to a PD2.0 protocol and a PD3.0 protocol.

7. The power supply circuit of claim 1, further comprising:

a buck-boost unit coupled to the multi-power input multiplexing switch and configured to receive the output power and buck-boost the output power to generate a supply power; and

a power management unit coupled to the buck-boost unit and configured to receive the power supply and to supply power to the controller based on the power supply.

8. The power supply circuit of claim 7, further comprising:

an external power interface configured to receive an external power source and to communicate the external power source to the buck-boost unit such that the controller operates in the first performance mode.

9. The power supply circuit of claim 1, further comprising:

a first unidirectional power switch coupled to the first transmission interface; and

a second unidirectional power switch coupled to the second transmission interface.

10. The power supply circuit according to any one of claims 1 to 9, wherein the first transmission interface comprises a power supply Type-C interface, and the second transmission interface comprises a Type-C/DP interface.

11. An electronic device, comprising:

a controller; and

a power supply circuit as claimed in any one of claims 1 to 10.

12. The electronic device of claim 11, wherein the controller is configured to place the second transport interface in a DP mode or a USB OTG mode when operating in the first performance mode.

13. The electronic device of claim 11, wherein the electronic device comprises a development board.

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