CN114520582A - Power supply circuit and electronic device - Google Patents
Power supply circuit and electronic device Download PDFInfo
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- CN114520582A CN114520582A CN202011299345.3A CN202011299345A CN114520582A CN 114520582 A CN114520582 A CN 114520582A CN 202011299345 A CN202011299345 A CN 202011299345A CN 114520582 A CN114520582 A CN 114520582A
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- power supply
- circuit
- voltage conversion
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- control circuit
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
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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
- H02J1/08—Three-wire systems; Systems having more than three wires
- H02J1/082—Plural DC voltage, e.g. DC supply voltage with at least two different DC voltage levels
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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
- H02J1/10—Parallel operation of dc sources
- H02J1/102—Parallel operation of dc sources being switching converters
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of dc power input into dc power output
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D10/00—Energy efficient computing, e.g. low power processors, power management or thermal management
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Direct Current Feeding And Distribution (AREA)
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Abstract
The application discloses a power supply circuit and an electronic device. The power supply circuit includes: the control circuit is electrically connected with an external power supply; the at least two first voltage conversion circuits are electrically connected with an external power supply and the control circuit and are externally connected with an electric load; wherein at least two first voltage conversion circuits are arranged in parallel; each first voltage conversion circuit receives a corresponding first electric signal sent by an external power supply and a corresponding first control electric signal sent by a control circuit, outputs a corresponding second electric signal based on the corresponding first electric signal and the corresponding first control electric signal, and outputs the second electric signal to an electric load; the first control electric signal is also used for regulating and outputting a second electric signal. The application provides a power supply circuit realizes the multiplexed output of voltage, and the control wherein is wherein one kind or multiplexed output and adjust every output voltage of the same kind, satisfies the different power supply demands of power consumption load different periods, and reduces the wasting of resources, improves power supply efficiency.
Description
Technical Field
The present disclosure relates to power supply technologies, and particularly to a power supply circuit and an electronic device.
Background
With the development of technology, the electronic devices have more and more powerful functions, and the demand for power supply increases, and power supply needs to be distributed, and efficiency, size, cost, thermal performance and the like are also considered, so that power supply of the electronic devices is a problem to be studied intensively.
Taking a Graphics Processing Unit (GPU) as an example, with the adoption of an AI function in large-scale learning and inference application deployment, ASICs and GPUs with complex functions are applied more and more widely in various industries, the performance of the graphics processor is more and more powerful, the computing power of the processor is increased, and thus the demand for power supply is increased. Therefore, power supply has become one of the main factors limiting the performance of the GPU, and how to supply power and improve power efficiency has become the biggest problem for the GPU system.
The same problem exists for powering other electronic devices like GPUs.
Disclosure of Invention
The application mainly provides a power supply circuit and an electronic device to solve the problems that the power supply effect of electronic equipment is not good and the power supply efficiency is not high.
In order to solve the technical problem, the application adopts a technical scheme that: provided is a power supply circuit including: a control circuit electrically connected to an external power supply; the at least two first voltage conversion circuits are electrically connected with an external power supply and the control circuit and are externally connected with an electric load; wherein at least two first voltage conversion circuits are arranged in parallel; each first voltage conversion circuit receives a corresponding first electric signal sent by an external power supply and a corresponding first control electric signal sent by a control circuit, outputs a corresponding second electric signal based on the corresponding first electric signal and the corresponding first control electric signal, and outputs the second electric signal to an electric load; the first control electric signal is also used for regulating and outputting a second electric signal.
In some embodiments, at least two first voltage conversion circuits share one output interface.
In some embodiments, a separate output interface is used for each first voltage conversion circuit.
In some embodiments, the at least two first voltage conversion circuits are different types of DC-DC voltage conversion circuits to convert the second electrical signal outputting different voltages.
In some embodiments, when the control circuit determines that the first electrical signal exceeds the set threshold, the control circuit sends a second control signal to the first voltage conversion circuit to turn off the first voltage conversion circuit.
In some embodiments, the power supply circuit includes a temperature sensor coupled to the control circuit; when the temperature sensor detects that the temperature of the power supply circuit exceeds a set temperature threshold, an electric signal is sent to the control circuit, so that the control circuit sends a third control signal to the first voltage conversion circuit, and the first voltage conversion circuit is disconnected.
In some embodiments, the power circuit includes a connection circuit communicatively coupled to the controller to transmit control instructions sent by an external host to the control circuit to cause the control circuit to generate the first control electrical signal.
In some embodiments, the control circuit is connected to an external host through an IIC bus to receive a control command sent by the external host, so that the control circuit generates the first control electrical signal.
In some embodiments, the power supply circuit includes a second voltage conversion circuit; the input end of the second voltage conversion circuit is connected with an external power supply, and the output end of the second voltage conversion circuit is connected with the control circuit and the first voltage conversion circuit; the second voltage conversion circuit converts a third electrical signal sent by an external power supply into a first electrical signal.
In order to solve the above technical problem, another technical solution adopted by the present application is: an electronic device is provided that includes a power circuit.
The beneficial effect of this application is: in contrast to the state of the art, the present application discloses a power supply circuit. In the power supply circuit, each first voltage conversion circuit receives a corresponding first electric signal sent by an external power supply, receives a corresponding first control electric signal sent by a control circuit, and outputs a corresponding second electric signal based on the corresponding first electric signal and the corresponding first control electric signal, so that voltage multipath output is realized, and the requirements of an electric load on a plurality of voltages are met; and each first voltage conversion circuit is arranged in parallel, the control circuit realizes independent control on each first voltage conversion circuit, when the power load does not need one or more voltages for power supply, one or more first voltage conversion circuits are controlled to be connected or not connected, so that partial voltage output is realized, the output voltage of each first voltage conversion circuit can be controlled, different power supply requirements of the external power load in different periods are met, simultaneously, resource loss and waste are reduced, and the power supply efficiency is improved. The first control electric signal sent by the control circuit controls the output voltage of each first voltage conversion circuit, and participates in adjusting the output voltage of each first voltage conversion circuit within a certain range in a compensation mode so as to control the voltage output of each first voltage conversion circuit and meet the power supply requirements of an external power load on different voltages and a plurality of different voltages.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative efforts, wherein:
FIG. 1 is a schematic diagram of an embodiment of a power circuit provided in the present application;
FIG. 2 is a schematic diagram of another embodiment of a power supply circuit provided in the present application;
fig. 3 is a schematic structural diagram of an embodiment of an electronic device provided in the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
It should be noted that if directional indications (such as up, down, left, right, front, and back … …) are referred to in the embodiments of the present application, the directional indications are only used to explain the relative positional relationship between the components, the movement situation, and the like in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indications are changed accordingly.
In addition, if there is a description of "first", "second", etc. in the embodiments of the present application, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present application.
For convenience of understanding, the power load is a GPU as an example, however, the power circuit provided in the present application is not limited to supplying power to the GPU, and in other embodiments, other electronic devices and apparatuses with complicated power supply requirements may also be supplied. In the whole operation process of the GPU, a plurality of different voltages are possibly needed, and the voltages needed in different operation states at different time are different, so that the power supply design of the GPU is particularly important, the complex power supply requirement of the GPU is met, the power supply efficiency can be improved, and the power supply loss is reduced. The power supply circuit can be applied to the fields with GPU requirements, such as large-scale data centers, automatic driving automobiles, bit coin mining machines, servers and the like, and is matched with the GPU to realize power supply architecture configuration of the GPU.
The power supply circuit can be integrated through the SMD (Surface Mounted Devices) electronic assembly process, so that the power supply circuit volume is smaller, the space occupied by the power supply circuit is reduced, the routing is shortened after integration, the loss can be reduced, and the power supply efficiency is improved. The SMD is one of SMT (Surface Mount Technology) components, and the SMT is a Circuit mounting Technology in which a leadless or short-lead Surface Mount component (SMC/SMD, which is called a chip component in chinese) is mounted on a Surface of a Printed Circuit Board (PCB) or a Surface of another substrate, and is soldered and assembled by a method such as reflow soldering or dip soldering.
Referring to fig. 1, fig. 1 is a schematic structural diagram of an embodiment of a power circuit provided in the present application.
The power circuit in this embodiment is connected to the external power source 120 and the electrical load 130, so as to convert the voltage of the external power source 120 and output the converted voltage to the electrical load 130, thereby meeting different power supply requirements of the electrical load 130. The external power source 120 may provide a dc power to the power circuit, the dc power may have a voltage of 12V, 24V, 48V, etc., and the current may be 100A, 80A, 60A, 50A, 40A, etc., without limitation. The number of the electrical loads 130 may be one or more, and the power supply circuit may satisfy the power supply requirement of the one or more electrical loads 130.
The power supply circuit in this embodiment includes a control circuit 111 and four first voltage conversion circuits 1121, 1122, 1123, 1124. One or more of the four first voltage conversion circuits 1121, 1122, 1123, and 1124 may be conversion circuits of different models, or four conversion circuits of different models, and may convert the voltage provided by the external power source 120 into different voltages under the control of the control circuit 111, so as to meet the power supply requirements of the electrical load 130 for different voltages or the power supply requirements of multiple different electrical loads 130.
The first voltage conversion circuits 1121, 1122, 1123, 1124 may be DC-DC conversion circuits, or DC-DC converters, the DC-DC conversion circuits may convert a DC power supply of a certain voltage level into a DC power supply of another voltage level, have high conversion efficiency, and can support a large current, and the use of the DC-DC conversion circuits enables the power supply circuits to output large currents of different voltages, improves power supply power, and improves power supply efficiency. The DC-DC conversion circuit is divided into two types of voltage boosting and voltage reducing according to the voltage grade conversion relation, and is divided into two types of isolation and non-isolation according to the input and output relation.
The control circuit 111 is electrically connected to the external power source 120, and receives a first electrical signal transmitted from the external power source 120. The four first voltage conversion circuits 1121, 1122, 1123, 1124 are connected in parallel, are electrically connected to the external power source 120 and the control circuit 111, and are externally connected to the electrical load 130. The first voltage conversion circuits 1121, 1122, 1123, and 1124 receive corresponding first electrical signals transmitted from the external power source 120, receive corresponding first control electrical signals transmitted from the control circuit 111, output corresponding second electrical signals based on the corresponding first electrical signals and the corresponding first control electrical signals, output the second electrical signals to the electrical load 130, and supply power to the electrical load 130; the first control electric signal is also used for regulating and outputting a second electric signal. The voltages output by the first voltage conversion circuits 1121, 1122, 1123, 1124 may be 24V, 12V, 3.3V, 1.8V, 1.5V, 1.2V, 1.0V, 0.8V, and the currents may be large currents such as 50A, 40A, 30A, 20A, and the large currents are output, so that the requirement of the electrical load 130 for high-power supply is met.
Different from the prior art, in the power circuit in this embodiment, the first voltage conversion circuits 1121, 1122, 1123, and 1124 respectively receive the corresponding first electrical signals sent by the external power source 120, receive the corresponding first control electrical signals sent by the control circuit 111, and output the corresponding second electrical signals based on the corresponding first electrical signals and the corresponding first control electrical signals, so as to implement multiple outputs of voltages and meet the requirements of the electrical load 130 for multiple voltages. The first voltage conversion circuits 1121, 1122, 1123, 1124 are arranged in parallel, the control circuit 111 controls the first voltage conversion circuits 1121, 1122, 1123, 1124 individually, and controls one or more of the first voltage conversion circuits 1121, 1122, 1123, 1124 to be connected or not to be connected when the electrical load 130 does not need one or more of the voltages for power supply, so as to output a part of the voltages, and also control the output voltage of each of the first voltage conversion circuits 1121, 1122, 1123, 1124, so as to meet different power supply requirements when the external electrical load 130 is in different operating states, and simultaneously reduce resource loss and waste and improve power supply efficiency. The first control electrical signal sent by the control circuit 111 controls the output voltage of each of the first voltage conversion circuits 1121, 1122, 1123, 1124, and participates in adjusting the output voltage of each of the first voltage conversion circuits 1121, 1122, 1123, 1124 in a certain range by means of compensation, so as to control the voltage output of each of the first voltage conversion circuits 1121, 1122, 1123, 1124, and meet the power supply requirements of the external power load 130 for different voltages and a plurality of different voltages.
In another embodiment, the power circuit comprises a control circuit and at least two first voltage conversion circuits, and can also realize multi-path output of different voltages, the control circuit can selectively communicate one or more of the first voltage conversion circuits to supply power to the electric load, and the control circuit can also adjust the output voltage of each of the at least two first voltage conversion circuits within a certain range in a compensation manner, so as to meet the power supply requirements of the electric load on different voltages and the power supply requirements of multiple voltages.
In one embodiment, the power circuit is connected to the electrical load 130 through an output interface, that is, the first voltage conversion circuits 1121, 1122, 1123, 1124 may share an output interface to supply power to the electrical load 130, so as to provide a plurality of different output voltages to the electrical load 130. In another embodiment, the first voltage conversion circuits 1121, 1122, 1123, 1124 respectively use a single output interface, and may be all connected to one electrical load 130, so as to provide multiple voltage outputs to the electrical load 130, thereby meeting the power supply requirements of the electrical load 130 for multiple voltages. Or may be connected to a plurality of electrical loads 130 to provide one or more output voltages to the plurality of electrical loads 130. For example, two electrical loads 130, each electrical load 130 is connected to 2 output interfaces, and it is also possible to output multiple voltages to multiple electrical loads 130, so as to meet the power supply requirements of multiple electrical loads 130 for multiple voltages.
The four first voltage conversion circuits 1121, 1122, 1123, 1124 may employ different types of voltage conversion circuits, such as different types of DC-DC conversion circuits, to convert and output second electrical signals with different voltages. For example, the DC-DC conversion circuit may be of a type LTC3729, LTC3731, LTC3717, or the like, which is not limited herein.
In this embodiment, the power circuit has functions of overvoltage protection, overcurrent protection, and over-temperature protection. The control circuit 111 is connected to the external power source 120, receives the first electrical signal sent by the external power source 120, determines whether the first electrical signal sent by the external power source 120 exceeds a set threshold, and sends a second control signal to the first voltage conversion circuits 1121, 1122, 1123, 1124 when the first electrical signal exceeds the set threshold, so as to disconnect the first voltage conversion circuits 1121, 1122, 1123, 1124, thereby implementing overvoltage and overcurrent protection. The set threshold includes a voltage threshold and a current threshold, and when the voltage or the current is too large and exceeds the threshold, the control circuit 111 controls the first voltage conversion circuits 1121, 1122, 1123, 1124 to be turned off, so as to turn off the voltage output of the first voltage conversion circuits, thereby protecting the electrical load 130 and avoiding the electrical load 130 from being damaged due to overvoltage or overcurrent.
In this embodiment, the power circuit includes a temperature sensor coupled to the control circuit 111. When the temperature sensor detects that the temperature of the power circuit exceeds a set temperature threshold, an electrical signal is sent to the control circuit 111, so that the control circuit 111 sends a third control signal to the first voltage conversion circuits 1121, 1122, 1123, 1124, so that the first voltage conversion circuits 1121, 1122, 1123, 1124 are turned off, the power circuit is protected, and the power circuit is prevented from being damaged due to the fact that the temperature is too high and heat is not dissipated timely. Temperature sensors may also be disposed on each sub-circuit of the power circuit, for example, the control circuit 111, and each voltage conversion circuit 1121, 1122, 1123, 1124 has a corresponding temperature sensor, and when the temperature sensor exceeds a temperature threshold corresponding to each sub-circuit, the corresponding sub-circuit is turned off, for example, the first voltage conversion circuit 1121, 1122, 1123, 1124 is turned off and does not operate, so as to protect the sub-circuit of the power circuit, and avoid that the local circuit is burned out due to an excessively high temperature, thereby causing the power circuit to be damaged and failing to normally supply power to the electrical load 130.
Referring to fig. 2, fig. 2 is a schematic structural diagram of another embodiment of a power circuit according to the present application.
The power circuit 210 in this embodiment is connected to the external power source 220, the power load 230, and the external host 240, receives a control signal from the external host 240, converts the voltage input by the external power source 220, and outputs the converted voltage to the power load 230, thereby meeting different power supply requirements of the power load 230. The external power source 220 may provide a direct current to the power circuit 210, the voltage of the direct current may be 18V to 28V, for example, the voltage of the direct current may be 20V, 22V, 24V, 25V or 26V, and the current may be 100A, 80A, 60A, 50A, 40A, etc., which is not limited herein.
The power supply circuit 210 in the present embodiment includes a control circuit 211, four first voltage conversion circuits 2121, 2122, 2123, 2124, and a second voltage conversion circuit 213. One or more of the four first voltage conversion circuits 2121, 2122, 2123, and 2124 may be conversion circuits of different types, or four conversion circuits of different types, and may convert the voltage provided by the external power source 220 into different voltages under the control of the control circuit 211, so as to meet the power supply requirement of the electrical load 230 for different voltages or the power supply requirement of multiple different electrical loads 230.
The input end of the second voltage conversion circuit 213 is connected to the external power supply 220, and the output end of the second voltage conversion circuit 213 is connected to the control circuit 211 and each of the first voltage conversion circuits 2121, 2122, 2123, 2124; the second voltage conversion circuit 213 converts the third electrical signal from the external power supply 220 into the first electrical signal, and outputs the first electrical signal to the control circuit 211 and each of the first voltage conversion circuits 2121, 2122, 2123, 2124. The first voltage conversion circuits 2121, 2122, 2123, and 2124 are connected in parallel, electrically connected to the second voltage conversion circuit 213 and the control circuit 211, and externally connected to the electrical load 230.
The control circuit 211 is connected to the external host 240 through a connection circuit, and the connection circuit transmits a control command sent by the external host 240 to the control circuit 211, so that the control circuit 211 generates a first control electrical signal. The first voltage conversion circuits 2121, 2122, 2123, and 2124 receive the corresponding first electrical signals sent by the second voltage conversion circuit 213, receive the corresponding first control electrical signals sent by the control circuit 211, output corresponding second electrical signals based on the corresponding first electrical signals and the corresponding first control electrical signals, output the second electrical signals to the electrical load 230, and supply power to the electrical load 230; the first control electric signal is also used for regulating and outputting a second electric signal.
In an embodiment, the control Circuit 211 may be connected to the external host 240 via an Inter-Integrated Circuit (IIC) bus, so as to receive a control command sent by the external host 240, and enable the control Circuit 211 to generate the first control signal. The external host 240 controls each output voltage through the IIC bus, including controlling each voltage output to be disconnected or connected, that is, controlling each first voltage conversion circuit 2121, 2122, 2123, 2124 to be disconnected or connected, or controlling and regulating each output voltage. IIC is a serial communication bus using a multi-master-slave architecture. The control circuit 211 may also be connected to the external host 240 through an SMBus (System Management Bus). SMBus is a system and power management related task control bus that is based largely on the IIC bus specification, which can be said to be one of the IICs. In another embodiment, the control circuit 211 may be connected to the external host 240 through wireless communication, and the control circuit 211 receives a wireless control signal transmitted by the external host 240 and controls and adjusts each of the first voltage converting circuits 2121, 2122, 2123, 2124. Different communication connection modes of the control circuit 211 and the external host 240 can be selected according to different power supply environments, so as to meet different power supply requirements.
In one embodiment, the output voltages of the first voltage conversion circuits 2121, 2122, 2123, 2124 are 0.8V, 1.0V, 1.2V, and 1.5V, respectively. The control circuit 211 adjusts the output voltages of the first voltage conversion circuits 2121, 2122, 2123, and 2124 within a certain range by means of compensation, the voltage adjustment range of the small voltage output is relatively small and may be adjusted within a range of ± 0.05 of the output voltage, the adjustment range of the larger voltage output is relatively large and may be ± 0.5V, for example, the output voltage of 0.8V may realize the voltage output of 0.75V to 0.85V through the adjustment function of the control circuit 211, and the output voltage of 1.5V may realize the voltage output of 1.0V to 2.0V through the adjustment function of the control circuit 211.
Each output voltage of power supply circuit 210 can all be adjusted in a certain range, when satisfying the different power supply demands of power consumption load 230, can be used for testing the withstand voltage performance of power consumption load 230, for example, test the voltage range that GPU can tolerate, adjust voltage output, monitor GPU's running state, in a certain voltage range, GPU running state is normal, surpass certain voltage threshold value, GPU unable normal operating, test this kind of GPU's withstand voltage scope, provide this kind of GPU optimal supply voltage scope. Or the GPU can be operated under a certain voltage, whether the voltage value is suitable for the GPU is judged through the influence on the service life of the GPU, and the voltage value is gradually increased or decreased, so that the power supply voltage range suitable for the GPU is tested, and the service life of the GPU is prolonged through the optimal power supply scheme.
Referring to fig. 3, fig. 3 is a schematic structural diagram of an embodiment of an electronic device provided in the present application. In this embodiment, the electronic device 30 includes a power circuit 31, the power circuit 31 supplies power to the whole electronic device 30 or supplies power to some electric loads in the electronic device 30, and the power circuit 31 can provide multiple paths of voltages and adjustable voltages to meet the power demand of each electric load in the high-power electronic device. The host in the electronic device 30 may control the power circuit 31 through the IIC bus, and control whether the power circuit 31 outputs a voltage to supply power to the electrical loads in the electronic device 30, or mediate and output different voltages to meet the power supply requirements of different voltages of the multiple electrical loads in the electronic device 30.
The power circuit 31 of the embodiment can be integrated into a power board, the wires of each circuit in the power circuit 31 are short, so that the loss can be reduced, and the miniaturization of the power circuit 31 makes the occupied space in the electronic device 30 smaller, so that the size of the electronic device 30 can be indirectly reduced.
In a specific embodiment, the electronic device 30 may be an equipment device including a GPU, such as a large data center, an auto-pilot vehicle, a bitcoin machine, a server, and the like, and the power circuit 31 in the electronic device 30 cooperates with the GPU to implement a power architecture configuration of the GPU, so as to meet power requirements of the GPU for high power and various voltages, improve power supply efficiency, and reduce energy loss. When different power supply requirements of different operating states of the power load are met, the electric energy loss can be reduced, the power supply efficiency is improved, and the protection function of the power circuit 31 is realized.
The above description is only an example of the present application and is not intended to limit the scope of the present application, and all modifications of equivalent structures and equivalent processes, which are made by the contents of the specification and the drawings, or which are directly or indirectly applied to other related technical fields, are intended to be included within the scope of the present application.
Claims (10)
1. A power supply circuit, comprising:
the control circuit is electrically connected with an external power supply;
at least two first voltage conversion circuits which are electrically connected with the external power supply and the control circuit and are externally connected with an electric load; at least two first voltage conversion circuits are arranged in parallel;
each first voltage conversion circuit receives a corresponding first electric signal sent by the external power supply and a corresponding first control electric signal sent by the control circuit, outputs a corresponding second electric signal based on the corresponding first electric signal and the corresponding first control electric signal, and outputs the second electric signal to the electric load;
wherein the first control electrical signal is further used for regulating and outputting the second electrical signal.
2. The power supply circuit according to claim 1, wherein at least two of the first voltage conversion circuits share an output interface.
3. The power supply circuit of claim 1, wherein each of the first voltage conversion circuits uses a separate output interface.
4. The power supply circuit according to claim 1, wherein at least two of the first voltage conversion circuits are different types of DC-DC voltage conversion circuits to convert the second electrical signal outputting different voltages.
5. The power supply circuit of claim 1, wherein the control circuit sends a second control signal to the first voltage conversion circuit to turn off the first voltage conversion circuit when the control circuit determines that the first electrical signal exceeds a set threshold.
6. The power supply circuit of claim 1, comprising a temperature sensor coupled to the control circuit;
when the temperature sensor detects that the temperature of the power supply circuit exceeds a set temperature threshold value, an electric signal is sent to the control circuit, so that the control circuit sends a third control signal to the first voltage conversion circuit, and the first voltage conversion circuit is disconnected.
7. The power supply circuit according to claim 1, comprising a connection circuit communicatively connected to the controller to transmit a control command sent by an external host to the control circuit to cause the control circuit to generate the first control electrical signal.
8. The power supply circuit of claim 1, wherein the control circuit is connected to an external host through an IIC bus to receive a control command sent by the external host, so that the control circuit generates the first control signal.
9. The power supply circuit according to claim 1, comprising a second voltage conversion circuit;
the input end of the second voltage conversion circuit is connected with the external power supply, and the output end of the second voltage conversion circuit is connected with the control circuit and the first voltage conversion circuit;
the second voltage conversion circuit converts a third electrical signal emitted by the external power supply into the first electrical signal.
10. An electronic device, characterized in that the electronic device comprises a power supply circuit according to any one of claims 1-9.
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CN202011299345.3A CN114520582A (en) | 2020-11-18 | 2020-11-18 | Power supply circuit and electronic device |
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CN202011299345.3A CN114520582A (en) | 2020-11-18 | 2020-11-18 | Power supply circuit and electronic device |
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CN114520582A true CN114520582A (en) | 2022-05-20 |
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