Power supply system, computer system and power supply method

Abstract

The invention provides a power supply system, a computer system and a power supply method. The system is used for providing peak power to a system load, and comprises a power supply unit; a controller configured to receive data from the power supply unit, and an input switch coupled to the power supply unit may also be included. The system may also include an input capacitor coupled to the input switch, an output capacitor coupled to the input capacitor, and an output switch coupled to a system load. The system may also be configured to provide boost power to the system load when the power supply unit has determined to trigger the constant current mode.

Description

Technical Field

[0001] This invention relates to electronic circuits, and more particularly to electronic circuits and methods for providing power in response to peak power demands. Background Technology

[0002] Electronic systems (such as computer server systems) may require reliable power supplies. In some cases, electronic systems may have peak power demands that are significantly higher than the baseline power requirement for a period of time. Electronic systems performing critical operations may require these peak power demand periods. Some modern electronic systems also increase their baseline operational voltage, further increasing peak power demands. Traditional methods of meeting peak power demands may involve increasing output capacity and / or the number of power supplies, leading to increased cost and complexity. Such power supplies are expensive and require more space within the electronic system. Similarly, meeting peak power demands using traditional methods may require increasing the number of capacitors or other components in the power supply design. Higher power may not be needed during the baseline power demand period, and peak power periods may be infrequent. In such cases, it may be possible to over-design power supplies with increased capacity or systems that utilize more power supplies or capacitors.

[0003] Therefore, there is a need for methods and systems to provide power to meet peak power demands without increasing design costs or space requirements. Furthermore, there is a need for methods and systems to increase the voltage of the supply current in cases of peak power demands. Summary of the Invention

[0004] The term "example" and similar terms, such as implementation, configuration, viewpoint, paradigm, and selection, are intended to broadly refer to all the subject matter of the invention and the following claims. It should be understood that statements containing these terms do not limit the subject matter described herein or limit the meaning or scope of the following claims. The embodiments of the invention covered herein are defined by the following claims, not by the summary of the invention. The summary of the invention is intended to summarize various viewpoints of the invention and introduce some concepts that will be further described in the following embodiments. The summary of the invention is not intended to identify key or essential features of the subject matter of the claims. Nor is the summary of the invention intended to determine the scope of the subject matter of the claims solely by using this summary of the invention. The subject matter should be understood by referring to appropriate paragraphs throughout the specification of the invention, any or all of the accompanying drawings, and each claim.

[0005] According to some embodiments of the present invention, a power supply system includes a power supply unit configured to provide current at an input voltage to a system load. The system may also include a controller configured to receive data from the power supply unit, and an input switch coupled to the power supply unit. The system may also include an input capacitor coupled to the input switch. The input capacitor has an input voltage, and an output capacitor coupled to the input capacitor stores a specific voltage. A boost converter coupled to the input capacitor and the output capacitor may also be included in the system. The boost converter is configured to charge the output capacitor, receive the input voltage, and boost the input voltage to a specific voltage. The output switch is coupled to the system load and can deliver current to the system load.

[0006] In a further embodiment of this system, the input switch is a metal-oxide-semiconductor field-effect transistor (MOSFET) OR gate.

[0007] In another further embodiment of the above implementation, the output switch is a metal-oxide-semiconductor field-effect transistor (MOSFET) OR gate.

[0008] According to another embodiment of the present invention, the power supply unit and the system load of the system can be configured to operate at a voltage of 50V.

[0009] According to another embodiment of the present invention, the controller of the system may be configured to receive data from the power supply unit, including the power supply unit status, output current, input current, temperature, voltage, or any combination thereof.

[0010] According to the configuration of the above embodiment, the controller can be configured to determine the constant current mode of the system based on data from the power supply unit, and based on the constant current mode, disable the input switch and enable the output switch to transfer current from the output capacitor to the system load.

[0011] In a further embodiment of the invention, the system also includes a voltage bus line coupled to a power supply unit, an input switch, an output switch, and a system load.

[0012] In another embodiment of the invention, a computer system is provided. The computer system may include one or more computer server systems and a power supply unit configured to provide current at an input voltage to the system load of the one or more computer server systems. The system may also include a controller configured to receive data from the power supply unit and an input switch coupled to the power supply unit. An input capacitor coupled to the input switch may have an input voltage. An output capacitor coupled to the input capacitor may store a specific voltage. The system may also include a boost converter coupled to the input capacitor and the output capacitor. The boost converter is configured to charge the output capacitor, receive the input voltage, and boost the input voltage to a specific voltage. The system may also include an output switch coupled to one or more computer server systems.

[0013] In a further embodiment of this system, the input switch is a metal-oxide-semiconductor field-effect transistor (MOSFET) OR gate.

[0014] In another further embodiment of the above implementation, the output switch is a metal-oxide-semiconductor field-effect transistor (MOSFET) OR gate.

[0015] In a further embodiment of the invention, the power supply unit and the system load of the system can be configured to operate at a voltage of 50V.

[0016] In another further embodiment of the invention, the controller of the system may be configured to receive data from the power supply unit, including power supply unit status, output current, input current, temperature, voltage, or any combination thereof.

[0017] According to another configuration of the above-described embodiment, the controller can be configured to determine the constant current mode of the system based on data from the power supply unit, and based on the constant current mode, disable the input switch and enable the output switch to transfer current from the output capacitor to the system load.

[0018] In a further embodiment of the invention, the system also includes a voltage bus line coupled to a power supply unit, an input switch, an output switch, and a system load.

[0019] In another embodiment of the invention, a power supply method is provided. This method may include receiving current from a power supply unit via an input switch. A controller, interconnected to receive data from the power supply unit, determines whether a constant current mode has been triggered. If the constant current mode is not triggered, the method may include enabling the input switch, disabling the output switch, and transferring current from the input switch to an input capacitor. If the constant current mode has been triggered, the method may include disabling the input switch, enabling the output switch, enabling the boost converter, and transferring current to the output capacitor via the boost converter. This method may also include transferring current from the output capacitor to a system load via the output switch.

[0020] In a further embodiment of the invention, the power supply unit and the system load may be configured to operate at a voltage of 50V.

[0021] In another embodiment of the above implementation, the controller may be configured to receive data from the power supply unit, including power supply unit status, output current, input current, temperature, voltage, or any combination thereof.

[0022] In a further embodiment of the above implementation, the method may include boosting the voltage of the current from the input capacitor to a specific voltage, and storing the specific voltage in the output capacitor.

[0023] In another embodiment of the above implementation, the method may further include determining a specific voltage by a controller based on data from a power supply unit.

[0024] In another embodiment of the above implementation, the method may further include determining a constant current mode based at least on data from the power supply unit.

[0025] The foregoing summary is not intended to represent every embodiment or all aspects of the invention. Rather, it provides only embodiments of some of the innovative ideas and features described herein. The foregoing features and advantages, as well as other features and advantages, of the invention will become apparent from the following detailed description of representative embodiments and modes for implementing the invention, taken in conjunction with the accompanying drawings and claims. Additional aspects of the invention will become apparent to those skilled in the art from the detailed description of the various embodiments performed with reference to the accompanying drawings, an overview of which is shown below. Attached Figure Description

[0026] The invention, along with its advantages, will be better understood through the following description of representative embodiments in conjunction with the accompanying drawings. These drawings depict only representative embodiments and should not be construed as limiting the scope of the various embodiments or claims.

[0027] Figure 1The accompanying drawings illustrate a peak energy storage circuit in a computer system according to certain embodiments of the present invention.

[0028] Figure 2 The accompanying drawings illustrate a peak energy storage circuit in a computer system according to certain embodiments of the present invention.

[0029] Figure 3 The diagram illustrates a peak energy storage circuit that provides peak power according to certain embodiments of the present invention.

[0030] Figure 4 The circuit diagram illustrates a peak energy storage circuit according to certain embodiments of the present invention.

[0031] Figure 5 A flowchart illustrating a method for providing peak power according to certain embodiments of the present invention.

[0032] [Symbol Explanation]

[0033] 100: Computer System

[0034] 102, 202, 402: Power supply unit (PSU)

[0035] 104: Data Line

[0036] 106, 406: Controller

[0037] 108, 408: Input switches

[0038] 110, 412: Input capacitors

[0039] 112: Boost Inductor

[0040] 114: Boost Converter

[0041] 116, 418: Forward diodes

[0042] 118, 416: Output capacitors

[0043] 120, 420: Output switches

[0044] 122, 222, 422: Input current

[0045] 124, 224, 424: Output current

[0046] 126, 426: System load

[0047] 128: Voltage bus (VBUS) line

[0048] 130, 230, 430: Peak energy storage circuit

[0049] 200: Computer Server Environment

[0050] 204, 404: data

[0051] 226: Load side

[0052] 228: VBUS Power Connection

[0053] 232: Baseboard Management Controller (BMC) 300: Graphics

[0054] 301: Current

[0055] 302: Peak Power

[0056] 304: Constant Current Mode

[0057] 306: Rated load

[0058] 308: Timeline

[0059] 310: Timeline already calibrated

[0060] 312: Time

[0061] 314: PSU output current

[0062] 316: Peak power of the server

[0063] 318: Shaded area

[0064] 400: System

[0065] 410: Inductor

[0066] 414: Power switch

[0067] 428:VBUS

[0068] 500: Flowchart

[0069] 502, 504, 510, 512, 514, 518, 520, 522, 524, 526: Operations Detailed Implementation

[0070] This invention relates to electronic circuits, computer systems, and operating methods designed to meet the peak power demand of a system load while reducing the design cost and complexity of one or more power supply units (PSUs). This invention allows a power delivery system for a system load to store energy in a peak energy storage circuit when the system load is not under constant current protection. When one or more PSUs trigger constant current protection, the peak energy storage circuit can release its stored energy to provide peak power to the system load. In some exemplary embodiments of this invention, the system can also boost the voltage of the power supplied to the system load to a specific voltage.

[0071] Various embodiments are described in conjunction with the accompanying drawings, wherein reference numerals in the drawings indicate the same or similar elements. The drawings are not necessarily drawn to scale and are provided only to illustrate embodiments and features of the invention. Numerous specific details, relationships, and methods are described to provide a comprehensive understanding of certain embodiments and features of the invention, although those skilled in the art acknowledge that these embodiments and features may be implemented without one or more specific details, through other relationships, or other methods. In some embodiments, well-known structures or operations are not shown in detail for drawing purposes. The various embodiments shown herein are not limited to the order of the depicted actions or events, as some actions may occur in a different order and / or simultaneously with other actions or events. Furthermore, not all depicted actions or events are indispensable for implementing certain embodiments and features of the invention.

[0072] For the purposes of this detailed description, unless otherwise stated, the singular includes the plural where appropriate, and vice versa. The word “includes” means “includes but is not limited to”. Furthermore, approximate terms such as “approximately,” “almost,” “substantially,” “roughly”, etc., may in this document mean “in,” “close to,” “approximately,” “within 3% to 5%,” “within acceptable manufacturing tolerances,” or any logical combination thereof. Similarly, the terms “vertical” or “horizontal” are intended to additionally include “within 3% to 5%” in the vertical or horizontal direction, respectively. Additionally, directional terms such as “at the top,” “at the bottom,” “to the left,” “to the right,” “above,” and “below” are intended to indicate the equivalent direction depicted with reference to the accompanying drawings and are to be understood in light of the context in which the object or element is referred to, such as from its usual position or other description herein.

[0073] refer to Figure 1A peak energy storage circuit 130 is provided. The peak energy storage circuit 130 may be located within a computer system 100. The computer system 100 may include one or more power supply units (PSUs) 102 and a system load 126. The system load 126 represents components of the computer system 100, such as processors, memory devices, fans, controllers, etc. One or more PSUs 102 may be connected to the system load 126 via a voltage bus (VBUS) line 128. In some embodiments, the VBUS line 128 may be another type of connection capable of delivering power from one or more PSUs 102 to the system load 126. One or more PSUs 102 may be connected to a controller 106 via a data line 104. The controller 106 may be located within the peak energy storage circuit 130 or within the computer system 100. The controller 106 may be configured to receive data from the data line 104, such as PSU status, output current, input current, temperature, and voltage. The controller 106 can also be configured to determine the constant current mode of the computer system 100.

[0074] refer to Figure 1 The peak energy storage circuit 130 and controller 106 can be connected to the input switch 108. In some embodiments of the invention, the input switch 108 may be a logical OR MOSFET gate. In some other embodiments, the input switch 108 may be another type of MOSFET. The input switch 108 can be configured to be enabled or disabled by the controller 106 according to the constant current mode of the computer system 100. When enabled, input current 122 is allowed to flow from VBUS line 128 into the input switch 108. The input current 122 can then be transferred to the input capacitor 110. The input capacitor 110 can store at least a portion of the input current 122.

[0075] Input capacitor 110 can be configured to deliver input current 122 to boost converter 114. Boost converter 114 includes boost inductor 112 and forward diode 116. Boost converter 114 can be configured to boost the input voltage of input current 122 to a specific boost voltage. For example, in some embodiments of the invention, an input voltage ranging from 12V to 50V is boosted to a specific boost voltage of 50V. This will generate a potential difference of 38V for peak power. In some embodiments, the specific boost voltage can be predetermined during the configuration of computer system 100. In some other embodiments, the specific boost voltage can be determined by controller 106. Boost converter 114 can perform this boost operation in response to a constant current mode determined by controller 106. Controller 106 can also cause boost converter 114 to boost the voltage of input current 122 in response to other signals.

[0076] In some embodiments of the invention, boosted or unboosted current can be delivered to output capacitor 118. Output capacitor 118 can be configured to store at least a portion of the boosted current. Output capacitor 118 can then deliver this current to output switch 120. In some embodiments of the invention, output switch 120 can be a logic OR MOSFET gate. In some other embodiments, output switch 120 can be another type of MOSFET. Output switch 120 can be connected to controller 106. Controller 106 can disable or enable output switch 120 according to a predetermined constant current mode of computer system 100. Other signals can also be transmitted through controller 106 to control output switch 120. When output switch 120 is enabled, boosted current from output capacitor 118 can be delivered to system load 126 as output current 124.

[0077] refer to Figure 2 This is an illustration of a peak energy storage circuit 230 disposed within a computer server environment in one embodiment. The computer server environment 200 may include one or more power supply units (PSUs) 202 connected to a load terminal 226 via a VBUS power connection 228. The one or more PSUs 202 may also be configured to transmit data 204 to a baseboard management controller (BMC) 232. The BMC 232 may be configured to manage power delivery across the computer server environment 200 and may also monitor and control other operations (such as cooling and startup) and transmit operational data to external devices. The BMC 232 may also be configured to transmit data 204 to a controller 106 in the peak energy storage circuit 130. In some embodiments, the BMC 232 may be configured to receive data 204, which includes PSU status, output current, input current, temperature, voltage, or any combination thereof.

[0078] exist Figure 2 In the detailed embodiments described herein, the components and functions of the peak energy storage circuit 230 may be the same as those of the peak energy storage circuit 130 described above (in...). Figure 1Similar to (in Chinese). In some embodiments, the configuration of the peak energy storage circuit 230 can be modified for use in the computer server environment 200. For example, one or more input switches 108 or output switches 120 can be used, or one or more input capacitors 110 or output capacitors 118 can be used. Similarly, the BMC 232 can be configured to control certain aspects of the peak energy storage circuit 230, such as the constant current mode of the computer server environment 200. The peak energy storage circuit 230 in the computer server environment 200 can be configured to receive input current 222 from one or more PSUs 202. This current can be boosted according to the constant current mode of the computer server environment 200 and then delivered from the output switch 120 to the load terminal 226 as output current 224.

[0079] The computer server environment 200 can utilize various operating voltages. For example, one or more PSUs 202 and load terminal 226 of the computer server environment 200 can be configured to operate at 50V with a low voltage warning of 45V. Embodiments of the invention may also use other voltage configurations. For example, one or more PSUs 202 and load terminal 226 of the computer server environment 200 can be configured to operate at 12V.

[0080] Figure 3 In this embodiment of the invention, a peak energy storage circuit 130 with a peak power of 302 is provided (in... Figure 1 The graph 300 shows the peak power 302 provided to the computer server (e.g., computer server environment 200) over time 312. Figure 2 The solid line represents the PSU output current 314, and the dashed line represents the server's peak power 316. When the computer server's constant current mode 304 is triggered, the computer server's peak energy storage circuit can be activated at a point on time axis 308. This will cause the peak power 302 supplied through the peak energy storage circuit to be provided to the computer server for a period of time represented by the shaded area 318. The computer server can then determine that the constant current mode 304 has ended and subsequently deactivate the peak energy storage circuit at a point on the calibrated time axis 310. Therefore, this will stop supplying peak power to the computer server and simultaneously supply the rated load 306 to the computer server.

[0081] refer to Figure 4This is a circuit diagram of a system 400 including a peak energy storage circuit 430 in an embodiment of the present invention. System 400 may include one or more PSUs 402 connected via VBUS 428 to provide power to a system load 426. The system load 426 may be any component in system 400 that requires power. VBUS 428 may also be another type of connection capable of providing power to the system load 426. One or more PSUs may also be configured to provide data 404 to a controller 406. Similar to other exemplary embodiments of the present invention, controller 406 may be configured to determine the constant current mode of system 400.

[0082] like Figure 4 As shown, embodiments of the present invention can also provide input current 422 to input switch 408, which may be a logic OR MOSFET gate. Input switch 408 can be enabled or disabled by controller 406 to provide power to input capacitor 412. Input capacitor 412 can store at least a portion of input current 422. Input capacitor 412 can be configured to provide input current 422 to boost converter, which includes inductor 410, power switch 414, and forward diode 418. In some embodiments, power switch 414 is a MOSFET. Inductor 410 and forward diode 418 can be used to boost the voltage of input current 422 to a specific boost voltage. Power switch 414 can be used to control the boost voltage of input current 422 through inductor 410 and forward diode 418. When power switch 414 is enabled, input current 422 flows through inductor 410 and power switch 414, thereby storing energy in inductor 410. When power switch 414 is deactivated, input current 422 is boosted to a specific boost voltage and directed to forward diode 418. Power switch 414 can be controlled by controller 406 depending on the constant current mode of system 400. The specific boost voltage can be determined during system 400 configuration or by controller 406. In some embodiments of the invention, the boost converter includes additional or alternative elements.

[0083] At least a portion of the boosted voltage or unboosted voltage of the boost converter can be stored in the input capacitor 416. When a constant current mode is determined by the controller 406, the output capacitor 416 can be configured to provide an output current 424 to the output switch 420. Similar to the input switch 408, the output switch 420 can be an OR MOSFET gate. Other types of logic gates and manufacturing processes can also be used in embodiments of the invention. The output switch 420 can be configured to provide an output current 424 to the system load 426. The output current 424 can be boosted to a specific boost voltage by the boost converter to enable the peak energy storage circuit 430 to provide peak power to the system load 426.

[0084] refer to Figure 5A flowchart 500 is shown, which describes in detail the operation method according to certain embodiments of the present invention. Figure 5 Flowchart 500 in the diagram represents a model of machine-readable instructions for a routine used to provide power in response to peak power demands. In this example, the machine-readable instructions contain an algorithm that is executed by (a) a processor, (b) a controller, and / or (c) one or more other suitable processing devices. The algorithm may be embodied in software stored on tangible media such as flash memory, compact disc read-only memory (CD-ROM), magnetic disk, conventional hard disk, digital video (versatile) disk (DVD), or other storage devices. However, those skilled in the art will readily understand that the entire algorithm and / or parts thereof can alternatively be executed by a device outside the processor, and / or embodied in firmware or dedicated hardware in a well-known form (e.g., implemented by application-specific integrated circuits (ASICs), programmable logic devices (PLDs), field-programmable logic devices (FPLDs), field-programmable gate arrays (FPGAs), discrete logic, etc.). For example, any or all of the components of the interface can be implemented by software, hardware, and / or firmware. Furthermore, some or all of the machine-readable instructions represented by the flowchart can be manually implemented. Additionally, although referenced... Figure 5 The flowchart 500 depicts the exemplary algorithm, and those skilled in the art will understand that many other methods can be used alternatively, such as those implemented in the machine-readable instructions of the example. For example, the execution order of blocks can be changed, and / or some of the described blocks can be changed, removed, or merged.

[0085] The power supply method includes operation 502, where the input switch receives current from the PSU. In operation 504, the controller (e.g., controller 106) (in...) Figure 1 As shown in the diagram, it determines whether the PSU has triggered constant current mode. The PSU is connected to the controller to receive data from the PSU.

[0086] If the constant current mode is not triggered, then execution is possible. Figure 5Operations 510 to 514. The constant current mode can be determined by controller 106. The constant current mode can also be determined by a processor or controller elsewhere in the system, such as BMC 232 (in...). Figure 2 (As shown in the diagram). In this case, operation 510 enables the input switch. In operation 512, the output switch is disabled. In operation 514, current is transferred from the input switch to the input capacitor.

[0087] If the constant current mode has been triggered, then execution can proceed. Figure 5 Operations 518 to 526. The constant current mode can be determined by the controller. The constant current mode can also be determined by a processor or controller elsewhere in the system. In this case, in operation 518, the input switch is disabled. In operation 520, the output switch is enabled. In operation 522, the boost converter is enabled. This boost converter may include a forward diode and a boost inductor, as described above (in...). Figure 4 (As shown in the diagram). In operation 524, current flows from the input capacitor to the output capacitor via the boost converter. In operation 526, current flows from the output capacitor to the system load via the output switch.

[0088] While embodiments of one or more implementations have been drawn and described, those skilled in the art will recognize or understand equivalent changes and modifications upon reading and understanding this specification and the accompanying drawings. Furthermore, specific features of the invention may be disclosed only in one of several implementations, and such features may be combined with one or more other features of other implementations, which may be advantageous and desirable for any given or particular application.

[0089] Various embodiments of the present invention have been described above, and it should be understood that they are presented only by way of illustration and are not intended to be limiting. Various modifications may be made to the disclosed embodiments without departing from the spirit and scope of the invention. Therefore, the breadth and scope of the invention should not be limited to any of the embodiments described above. Rather, the scope of the invention should be defined by the claims and their equivalents.

Claims

1. A power supply system, comprising: The power supply unit is configured to provide current at the input voltage to the system load; The controller is configured to receive data from the aforementioned power supply unit; An input switch is coupled to the aforementioned power supply unit; An input capacitor is coupled to the aforementioned input switch, and the aforementioned input capacitor has the aforementioned input voltage; An output capacitor is coupled to the aforementioned input capacitor, and the aforementioned output capacitor stores a specific voltage. A boost converter, coupled to the aforementioned input capacitor and the aforementioned output capacitor, the boost converter being configured to charge the aforementioned output capacitor, receive the aforementioned input voltage, and boost the aforementioned input voltage to the aforementioned specific voltage; and The output switch is coupled to the aforementioned system load.

2. The power supply system as claimed in claim 1, wherein the input switch is a metal-oxide-semiconductor field-effect transistor (OR gate).

3. The power supply system as claimed in claim 1, wherein the output switch is a metal-oxide-semiconductor field-effect transistor (MOSFET) OR gate.

4. The power supply system of claim 1, wherein the power supply unit and the system load are configured to operate at a voltage of 50V.

5. The power supply system of claim 1, wherein the controller is configured to receive the data from the power supply unit, the data including power supply unit status, output current, input current, temperature, voltage, or any combination thereof.

6. The power supply system of claim 5, wherein the controller is configured to: Based on the data from the aforementioned power supply unit, a certain current mode of the power supply system is determined; and Based on the constant current mode described above, the input switch is disabled and the output switch is enabled to transfer the current from the output capacitor to the system load.

7. The power supply system as claimed in claim 1 further includes a voltage bus line coupled to the power supply unit, the input switch, the output switch, and the system load.

8. A computer system comprising: One or more computer server systems; The power supply unit is configured to provide current at the input voltage to the system load of the one or more computer server systems mentioned above. The controller is configured to receive data from the aforementioned power supply unit; An input switch is coupled to the aforementioned power supply unit; An input capacitor is coupled to the aforementioned input switch, and the aforementioned input capacitor has the aforementioned input voltage; An output capacitor is coupled to the aforementioned input capacitor, and the aforementioned output capacitor stores a specific voltage. A boost converter, coupled to the aforementioned input capacitor and the aforementioned output capacitor, the boost converter being configured to charge the aforementioned output capacitor, receive the aforementioned input voltage, and boost the aforementioned input voltage to the aforementioned specific voltage; and An output switch is coupled to one or more of the aforementioned computer server systems.

9. A power supply method, comprising: The input switch receives current from the power supply unit; The controller determines whether the power supply unit triggers a certain current mode. The controllers are interconnected to receive data from the power supply unit. If the above constant current mode is not triggered: Enable the above input switches; Disable the output switch; as well as The aforementioned current is transferred from the aforementioned input switch to the input capacitor; and If the above constant current mode has been triggered: Disable the above input switches; Enable the above output switch; Enable boost converter; The aforementioned boost converter transfers the aforementioned current from the input capacitor to the output capacitor; and The aforementioned output switch transmits the current from the aforementioned output capacitor to the system load.

10. The power supply method as described in claim 9, further comprising: The voltage of the current from the input capacitor is boosted to a specific voltage; The specific voltage described above is stored in the output capacitor described above; The controller determines the specific voltage based on the data from the power supply unit. The controller determines the constant current mode based at least on the data from the power supply unit.

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