CN115441572A - Power supply circuit for controller and electronic device - Google Patents
Power supply circuit for controller and electronic device Download PDFInfo
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- CN115441572A CN115441572A CN202211017497.9A CN202211017497A CN115441572A CN 115441572 A CN115441572 A CN 115441572A CN 202211017497 A CN202211017497 A CN 202211017497A CN 115441572 A CN115441572 A CN 115441572A
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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
- H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
- H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
- H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
- H02J9/061—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems for DC powered loads
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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
- H02J7/0047—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with monitoring or indicating devices or circuits
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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
Technical Field
The present disclosure relates to power supply circuits, and particularly to a power supply circuit for a controller and an electronic device.
Background
Electronic devices generally require an external power source to supply power, and the external power source provides voltage to units such as a controller chip in the electronic device to supply power. Some electronic devices with internal storage batteries also require an external power source to charge, and the external power source can also supply power to the electronic device during charging. The number of the external power supplies is generally one, and for example, a common mobile phone and a common notebook computer are powered by the external power supplies through a power interface. A few electronic devices support multi-power-supply-input power supply, but the power supply circuits of the electronic devices supporting multi-power-supply-input are complex and have single functions, and active identification and switching cannot be realized.
Disclosure of Invention
The application provides a power supply circuit and electronic equipment for controller, can receive the input power of first transmission interface or second transmission interface and supply power through many power input multiplex switch, and circuit structure is simple. And the power supply mode of the received input power supply can be transmitted to the controller, and the controller identifies and enters different performance modes. Furthermore, the automatic switching of the input power of the accessed 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 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, to the controller, corresponding status indications and output power 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 indications, the power consumption in the second performance mode being less than the power consumption in the first performance mode.
In some embodiments, 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 transmitting, to the controller, a second status indication and a second output power corresponding to the second input power when the second input power is received via the second transmission interface without receiving the first input power via the first transmission interface, such that the controller operates in the second performance mode based on the second output power in response to the second status indication.
In some embodiments, 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.
In some embodiments, 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.
In some embodiments, the power supply circuit further comprises: 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.
In some embodiments, the power transfer control unit is configured to generate the power transfer status signal in dependence on whether the first input power supply conforms to a PD2.0 protocol and a PD3.0 protocol.
In some embodiments, the power supply circuit further comprises: 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.
In some embodiments, the power supply circuit further comprises: an external power source 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.
In some embodiments, the power supply circuit further comprises: 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 comprises a power supply Type-C interface, and the second transmission interface comprises a Type-C/DP interface.
In a second aspect, an electronic device is provided. The electronic device includes: a controller; and a power supply circuit according to any one of the embodiments of the present invention.
In some embodiments, the controller is configured to cause the second transport interface to be in DP mode or USB OTG mode when operating in the first performance mode.
In some embodiments, the electronic device includes a development board.
According to the embodiment of the invention, the first transmission interface and the second transmission interface can be coupled to the first power input terminal or the second power input terminal, the first input power or the second input power can be accessed, then the power of the first transmission interface or the second transmission interface can be received through the multi-power input multiplexing switch, and the power can be supplied to the controller for power supply and starting, namely the application can support the input power access of the first transmission interface or the second transmission interface and the starting of the controller. Meanwhile, the multi-power input multiplexing switch outputs the currently received state indication of the input power to the controller, and the controller enters a certain specific performance mode according to the state indication, so that the controller enters different performance modes according to different input power.
The above description of the present invention is only an overview of the technical solutions of the present application, and in order to make the technical solutions of the present application more clearly understood by those skilled in the art, the present invention may be further implemented according to the content described in the text and drawings of the present application, and in order to make the above objects, other objects, features, and advantages of the present application more easily understood, the following description is made in conjunction with the detailed description of the present application and the drawings.
Drawings
The drawings are only for purposes of illustrating the principles, implementations, applications, features, and effects of particular embodiments of the present application, as well as others related thereto, and are not to be construed as limiting the 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 explain in detail possible application scenarios, technical principles, practical embodiments, and the like of the present application, the following detailed description is given with reference to the accompanying drawings in conjunction with the listed embodiments. The embodiments described herein are only used for clearly illustrating the technical solutions of the present application, and therefore are only used as examples, and the scope of the present application is not limited thereby.
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 application. The appearances of the phrase "an embodiment" in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or related to other embodiments specifically defined. In principle, in the present application, the technical features mentioned in the embodiments can be combined in any manner to form a corresponding implementable technical solution as long as there is no technical contradiction or conflict.
Unless otherwise defined, technical terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the use of relational terms herein is intended only to describe particular embodiments and is not intended to limit the present application.
In the description of the present application, the term "and/or" is a expression for describing a logical relationship between objects, meaning that three relationships may exist, for example a and/or B, meaning: there are three cases of A, B, and both A and B. In addition, the character "/" herein generally indicates that the former and latter associated objects are in a logical relationship of "or".
In this application, terms such as "first" and "second" are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions.
Without further limitation, in this application, the use of "including," "comprising," "having," or other similar expressions in phrases and expressions of "including," "comprising," or "having," is intended to cover a non-exclusive inclusion, and such expressions do not exclude the presence of additional elements in a process, method, or article that includes the recited elements, such that a process, method, or article that includes a list of elements may include not only those elements but also other elements not expressly listed or inherent to such process, method, or article.
In this application, the terms "greater than", "less than", "more than", and the like are to be understood as excluding the number; the expressions "above", "below", "within" and the like are understood to include the present numbers. In addition, in the description of the embodiments of the present application, "a plurality" means two or more (including two), and expressions related to "a plurality" similar thereto are also understood, for example, "a plurality of groups", "a plurality of times", and the like, unless specifically defined otherwise.
As mentioned in the background art, the conventional power supply switching power supply circuit is complex and has a single function, and cannot realize active identification and switching. In the application, the multi-power-supply input multiplexing switch can receive and supply the voltages of different transmission interfaces, and the circuit structure is simple. And the power supply mode of the received transmission interface can be identified and different performance modes can be entered. Specific embodiments are explained 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 supply circuit 100 includes a first transmission interface 101, a second transmission interface 102, and a multi-power-supply 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 the second power input terminal 202.
A multi-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 a corresponding status indication and output power to the controller 301 in accordance with receiving a first input power via the first transmission interface 101 or a second input power via the second transmission interface 102, 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. The power consumption in the second performance mode is less than the power consumption in the first performance mode.
In some embodiments, different input power sources have different power modes, the power modes indicating the magnitude of the external power supply capability of the input power sources, and the different power modes correspond to different status indications. The status indication is used for indicating the power supply modes of the first input power supply and the second input power supply which are currently received, and the power supply modes comprise 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 voltage to the first transmission interface 101 or the second input power voltage to the second transmission interface 102 and outputs the power to the controller 301, and then the controller 301 can obtain the power and start. The term "coupled" 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 is 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 second input power, at this time, the input power is not received, then the multi-power input multiplexing switch 103 determines 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, wherein the power consumption in the second performance mode is less than the power consumption in the first performance mode. The first performance mode may be considered a high performance mode and the second performance mode may be considered a low performance mode, with a higher performance level and higher power consumption in the first performance mode than in the low performance mode, requiring higher voltage and greater current support. Generally, the initial mode when the controller receives the voltage start is a low performance mode. Then the controller judges the power supply mode of the input power supply according to the state indication, and if the input power supply has strong power supply capability, the controller 301 responds to the state indication to work in the first performance mode, namely, enters the first performance mode with high performance to work. And if the input power supply is weak in power supply capacity, the input power supply is operated in the second performance mode. Therefore, the controller completes the state indication identification of the input power supply and realizes the work in different performance modes according to different input power supplies.
The power supply modes of the first input power supply and the second input power supply are not limited in the present invention, for example, the first input power supply may be both input power supplies with strong power supply capability or both input power supplies with weak power supply capability, or one of the input power supplies may be an input power supply with strong power supply capability and the other input power supply with weak power supply capability. In some embodiments, the first input power source is more powerful and the second input power source is less powerful. At this time, the multi-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 transmitting, to the controller, a second status indication and a second output power corresponding to the second input power when the second input power is received via the second transmission interface without receiving the first input power via the first transmission interface, such that the controller operates in the second performance mode based on the second output power in response to the second status indication. That is, in this embodiment, the first performance mode corresponding to the first transmission interface and the first input power supply is used, and the controller enters the first performance mode with high performance and high power consumption when receiving the first input power supply with strong power supply capability. And the controller enters the second performance mode with low performance and low power consumption when receiving the second input power supply with weak power supply capacity.
In some embodiments, 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. In this embodiment, the priority of the first transmission interface and the first input power supply is higher than that of the second transmission interface and the second input power supply, and the determination of the priority may be performed according to the voltage, current or power state of the external power supply connected to the transmission interface 101, for example, the high priority is when the voltage, current or power is large, and the low priority is when the voltage, current or current is small. Or in some embodiments, since the performance of the transmission interfaces is different, one of the transmission interfaces may be set as a main power supply port, the main power supply port has a high priority, and the other transmission interfaces are set as a slave power supply port, and the slave power supply port has a low priority. When the controller is in the first performance mode after receiving the first input power supply and then is connected with the second input power supply, the receiving of the first input power supply and the output of the first output power supply are kept unchanged, so that the controller is kept in the first performance mode, namely the high performance mode.
In some embodiments, 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. 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 mode. When the first input power supply is connected, the multi-power input multiplexing switch 103 switches to the first input power supply and outputs the first output power supply, and transmits a first state indication to the controller, so that the controller is switched from the second performance mode to the first performance mode, and the controller completes the switching from the second performance mode to the first performance mode according to the condition of the input power supply. When the multi-power input multiplexing switch 103 receives an external power supply with a higher voltage and a higher current, the controller 301 can be supported to enter the high-performance mode, and the controller 301 can switch from the low-performance mode to the high-performance mode by indicating the output state of the multi-power input multiplexing switch to the controller 301, so that the controller 301 can complete the performance switching according to the received power supply modes of different input power supplies.
In some embodiments, the determination and switching of the power supply mode of the first input power source by the multi-power-source input multiplexing switch 103 are based on a voltage of the first input power source connected by the first transmission interface 101, the voltage of the first input power source is higher than a voltage of the second input power source, when the first input power source is connected and the voltage of the first input power source is higher than the voltage of the second input power source, the multi-power-source input multiplexing switch 103 can switch the input power source from the second output power source to the first output power source, and output a first status indication to the controller, and 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 the present 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 transfer control unit 105 is configured to generate a power transfer status signal from a first input power source received via the first transmission interface 101 and to transfer the power transfer status signal to the controller 301 such that the controller 301 operates according to the power transfer status signal.
In this embodiment, the controller 301 can know the power supply power of the connected input power source according to the received power transmission status signal. The controller 301 may determine whether to enter the first performance mode or the second performance mode according to the power transmission status signal, for example, enter the first performance mode after the power in the power transmission status signal is greater than a predetermined value. The accurate power parameter can be obtained through the power transmission control unit 105, and at the moment, the controller can obtain the accurate power parameter through the power transmission state signal, so that more accurate input power supply judgment is realized, and the corresponding performance mode can be ensured.
In some embodiments, the power transfer control unit 105 is configured to generate the power transfer status signal in dependence on whether the first input power supply conforms to a PD2.0 protocol and a PD3.0 protocol. The corresponding Power transfer control unit 105 may now be the PD controller 105, the full name of the PD being USB Power Delivery. Communication with the PD-type input power supply can be achieved by the PD controller 105, so that the supply power of the PD-type input power supply can be identified, when the power transfer status signal is a PD status output signal. The controller 301 can know the power supply of the connected PD-type input power source after receiving the PD status output signal. The controller 301 may determine whether to enter the high performance mode according to the supply power.
In some embodiments, the power circuit 100 may further include a buck-boost unit 106 and a power management unit 107. A buck-boost unit 106 is coupled to the multiple 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 supply power. 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 voltage step-up/step-down unit 106 may change the received voltage to a preset voltage value, so as to meet the voltage requirement of the subsequent circuit. 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. The voltage output by the step-up/down unit 106 may be power-managed by the power management unit 107. The power management unit 107 is used to implement more complicated power management, such as outputting multiple different voltages to the controller 301, and simultaneously cutting off the voltage in time when the voltage is abnormal, so as to ensure the voltage safety of the controller 301.
In some embodiments, the power supply circuit 100 may also include an external power interface 108. The external power source interface 108 is configured to receive an external power source and to transmit the external power source to the buck-boost unit such that the controller operates in the first performance mode.
Through the external power interface 108, it is possible to provide voltage (i.e., power) from the external power source to the buck-boost unit 106, and then provide voltage from the buck-boost unit 106 to the controller 301. In some embodiments, the controller 301 is configured to enter the first performance mode after detecting that the external power source is a predetermined device. The preset device, i.e. the external power supply meeting the voltage requirement and the current requirement, may perform the detection through an information transmission interface between the controller 301 and the external power supply interface 108, such as an I2C interface. In specific implementation, the information transmission interface of the external power interface 108 may be disposed on one interface platelet, and then connected to the controller 301 through an interface connection line, so as to implement information transmission between the controller 301 and the external power interface 108. When power is supplied through the external power interface 108, the first transmission interface 101 and the second transmission interface 102 may realize a non-power supply function, for example, an information transmission function may be realized, at this time, an information transmission pin (such as a USB data pin, a DP data pin, and the like) of the controller 301 may be connected to the first transmission interface 101 and the second transmission interface 102, and then, an external device may be connected to the first transmission interface 101 and the second transmission interface 102 and perform information transmission and information exchange with the controller.
In some embodiments, the power supply 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 an input power supply is not connected to a certain transmission interface, the controller 301 may control the unidirectional power switch connected to the transmission interface, and then the unidirectional power switch may output a voltage to the transmission interface, so that the transmission interface may supply power to the outside, that is, supply power to the device connected to the transmission interface 101. It should be noted that the voltage or the power supply voltage referred to in the present application is a power supply voltage, and is not a voltage for supplying power or supplying power, but is a variable 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 to support an USB OTG mode when detecting that the external power source interface 108 is connected to an external power source. OTG is an abbreviation of On-The-Go, and is mainly applied to connection between different devices or mobile devices for data exchange. That is, after the external power interface 108 is connected to an external power source, the external device may be connected to the transmission interface through a 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 as to implement OTG data exchange between the controller 301 and the external device.
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 may be all 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 other types of interfaces, such as other types of USB interfaces.
In some embodiments, the transmission interfaces are all Type-C interfaces, the first transmission interface includes a Power supply Type-C interface, the second transmission interface includes Type-C/DP interfaces, that is, a Power Type-C interface which is a main Power supply interface and a Type-C/DP interface which is a slave Power supply/display/OTG, where DP refers to a 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 Type-C data transmission function, the data pin of the Type-C interface is connected with the Type-C data pin of the controller. If the display function is to be implemented, the DP pin of the Type-C interface is to be connected with the DP data pin of the controller. The controller can get into high performance mode or low performance mode through the power supply mode who detects every Type-C mouth, and this application supports a plurality of Type-C mouths to insert simultaneously, each other does not influence. The main power supply port has high priority, and the main power supply port is preferentially used for supplying power. An external power interface 108 can be further included, so that the external power and the interface platelet can be simultaneously supported for power supply, and the switching of the high-performance mode can be realized through I2C detection.
When the Power Type-C port and the Type-C/DP port are only connected to one, the Power supply of the controller 301 is started. 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 general applications. When the Power Type-C is connected to the input Power supply, the controller 301 judges that the input Power supply is in a PD2.0/PD3.0 protocol Power supply mode according to the PD state output signal of the PD controller 301, and the controller 301 enters a high-performance mode according to the PD state output signal and can support 5V/3A,12V/2A and 20V/0.9A Power supply. When the Power Type-C is turned on, if in the non-PD Power mode, the controller 301 enters a low performance mode (supporting current depending on the input Power).
When both the Power Type-C port and the Type-C/DP are accessed, the default is that the Power Type C is supplied, and the Power supply of the Type C/DP is disconnected; no matter which of the Power Type-C port and the Type-C/DP is inserted into the input Power supply first, the Power Type-C port has the highest Power supply priority. When the Type-C/DP supplies Power, then the Power Type-C is inserted, and the hardware is automatically switched to the Power Type-C port for supplying Power. At this time, the Type-C/DP port is only used for DP or USB OTG (when the USB HOST is a USB master device, the Type-C/DP port supplies power to the outside, that is, the output voltage is switched by the unidirectional power switch 109); when the Power Type C port is inserted into the input Power supply first, the Power Type C realizes Power supply. And the subsequent Type-C/DP is plugged into the input Power supply again, or the Power Type C is kept for supplying Power, and then the Power supply path is kept unchanged.
When the external power supply and interface platelet supplies power (5V/4.5A) to the circuit through the 40pin, the controller 301 enters the high performance mode by detecting I2C on the platelet. When external power source and interface platelet access power supply, allow Type-C/DP mouth to insert, and can support DP and USB OTG to use.
In a second aspect, embodiments of the present disclosure provide an electronic device. The electronic device comprises 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 supply circuit 100, but also includes a housing for protecting the power supply circuit 100, a man-machine interaction input device or a display device, and the like, and a program with a preset function stored in the controller 301, so that the preset function can be completed. The electronic device with the power supply circuit 100 of the present application can realize access of multiple input power supplies, and meanwhile, the controller 301 can enter different performance states according to the power supply modes of the input power supplies.
In some embodiments, the controller 301 is configured to place the second transport interface in a DP mode or a USB OTG mode when operating in the first performance mode. That is, when the first transmission interface is connected to the first input power source or the external power source 108 is connected to the external power source, the controller 301 is in the first performance mode, and at this time, the second transmission interface is not powered, so that the second transmission interface is in the DP mode or the USB OTG mode, that is, the second transmission interface 102 may be connected to the external device.
In some embodiments, the electronic device comprises a development board. The development board is a circuit board having the power supply circuit 100, and further has a controller 301, and a developer can write a development program into the controller 301, so that further development work can be performed on the development board. The development board with the power supply circuit 100 of the present application can implement access of multiple input power supplies, and the controller 301 can enter different performance states according to the power supply mode of the input power supplies.
Finally, it should be noted that, although the above embodiments have been described in the text and drawings of the present application, the scope of the patent protection of the present application is not limited thereby. All technical solutions generated by replacing or modifying the equivalent structure or the equivalent flow described in the text and the drawings of the present application and directly or indirectly implementing the technical solutions of the above embodiments in other related technical fields and the like based on the substantial idea of the present application are included in the scope of the patent protection of the present 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.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211017497.9A CN115441572A (en) | 2022-08-23 | 2022-08-23 | Power supply circuit for controller and electronic device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211017497.9A CN115441572A (en) | 2022-08-23 | 2022-08-23 | Power supply circuit for controller and electronic device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115441572A true CN115441572A (en) | 2022-12-06 |
Family
ID=84244742
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211017497.9A Pending CN115441572A (en) | 2022-08-23 | 2022-08-23 | Power supply circuit for controller and electronic device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115441572A (en) |
-
2022
- 2022-08-23 CN CN202211017497.9A patent/CN115441572A/en active Pending
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