Power supply system, server and power supply method

Abstract

This disclosure provides a power supply system, server, and power supply method applicable to the server field. The power supply system may include: a first power rail and a second power rail; a controller for generating a first control signal based on a type signal from a central processing unit (CPU) disposed on a server motherboard; and a switching control circuit electrically connected to the first power rail, the second power rail, and the controller, for switching the power supply mode of the first power rail and the second power rail to the CPU under the control of the first control signal. In the first power supply mode, the first power rail and the second power rail are electrically connected so that both power rails jointly supply power to the CPU. In the second power supply mode, the first power rail and the second power rail are electrically isolated from each other so that either the first power rail or the second power rail supplies power to the CPU.

Description

Technical Field

[0001] This disclosure relates to the field of servers, and more specifically, to a power supply system, a server, and a power supply method. Background Technology

[0002] With the development of central processing units (CPUs), the design differences between different types of CPUs have become increasingly significant. To accommodate various types of CPUs, some server designs require multiple independent power supply bills of materials (BOMs), and the server is deployed based on these multiple BOMs to power different types of CPUs separately. However, this approach has drawbacks such as occupying server motherboard space, reducing the layout space of other components, and consuming more resources, posing challenges to the overall design and system integration of the server motherboard. Summary of the Invention

[0003] In view of this, this disclosure provides a power supply system, a server, and a power supply method.

[0004] According to one aspect of this disclosure, a power supply system is provided, including: a first power rail and a second power rail disposed on a server motherboard; a controller for generating a first control signal based on a type signal from a central processing unit disposed on the server motherboard; and a switching control circuit electrically connected to the first power rail, the second power rail, and the controller for switching the power supply mode of the first power rail and the second power rail to the central processing unit under the control of the first control signal, wherein, in a first power supply mode, the first power rail and the second power rail are electrically connected so that the first power rail and the second power rail jointly supply power to the central processing unit, and in a second power supply mode, the first power rail and the second power rail are electrically isolated from each other so that either the first power rail or the second power rail supplies power to the central processing unit.

[0005] In this embodiment, the controller can provide a first control signal to the switching control circuit based on the type signal of the central processing unit (CPU) located on the server motherboard. Under the control of the first control signal, the switching control circuit can electrically connect the first and second power rails, or electrically isolate the first and second power rails, so that the first and second power rails jointly power the CPU, or that either the first or second power rail powers the CPU. Thus, the switching control circuit can flexibly control the electrical connection or isolation of the first and second power rails according to the type of CPU, flexibly and efficiently meeting the power requirements of the CPU. Based on this, by using the switching control circuit, the power requirements of different CPUs can be adaptively met, eliminating the need to design multiple independent power supply components to meet the power requirements of different CPUs. This reduces the area of ​​the server motherboard occupied by multiple power supply components, providing layout space for other components and reducing resource consumption.

[0006] According to an embodiment of this disclosure, the switching control circuit includes: a first control unit electrically connected between a first power rail and a second power rail, and a control terminal connected to a controller. The first control unit is used to: electrically connect the first power rail and the second power rail when the switching control circuit is in a first power supply mode; and electrically isolate the first power rail and the second power rail when the switching control circuit is in a second power supply mode.

[0007] In this embodiment, the first control unit connected between the first and second power rails can, under the control of a first control signal, electrically connect or electrically isolate the first and second power rails. Thus, the first control unit can flexibly control the switching control circuit to electrically connect or isolate the first and second power rails according to the type of central processing unit, flexibly and efficiently meeting the power requirements of the central processing unit. This eliminates the need to design multiple independent power supply components to meet the power needs of different central processing units, thereby reducing the area occupied by multiple power supply components on the server motherboard, providing layout space for other components, and reducing resource consumption.

[0008] According to embodiments of this disclosure, the server motherboard further includes a power supply. The first control unit includes: a first resistor electrically connected between the power supply and a first node; a second resistor electrically connected between the power supply and a second node; a first switching transistor with its control terminal electrically connected to a controller and its two ends electrically connected to the first node and ground, respectively; a second switching transistor with its control terminal electrically connected to the first node and its two ends electrically connected to the second node and ground, respectively; and a third switching transistor with its control terminal electrically connected to the second node, its first end electrically connected to a first electrical rail, and its second end electrically connected to the second electrical rail via the second node.

[0009] In this embodiment, the first switching transistor can connect or isolate the first node from ground under the control of the first control signal; the second switching transistor can connect or isolate the second node from ground under the control of the potential of the first node; and the third switching transistor can connect or isolate the first and second power rails under the control of the potential of the second node. Thus, the first and second power rails can be flexibly connected or isolated using the first, second, and third switching transistors, thereby meeting the power requirements of the central processing unit. This eliminates the need to design multiple independent power supply components to meet the power needs of different central processing units, reducing the area occupied by multiple power supply components on the server motherboard, providing layout space for other components, and reducing resource consumption.

[0010] According to an embodiment of the present disclosure, the second power rail is electrically connected to the central processing unit so as to supply power to the central processing unit via the second power supply mode; the switching control circuit further includes: a second control unit, including an adjustment voltage terminal for receiving an adjustment voltage, and electrically connected to the second power rail and the controller, the second control unit being used to electrically connect the voltage adjustment terminal and the second power rail when the switching control circuit is in the second power supply mode, so as to adjust the voltage of the second power rail using the adjustment voltage.

[0011] In this embodiment, the second power rail can serve as the power rail for supplying power to the central processing unit in the second power supply mode. In this mode, the second control unit can electrically connect the voltage adjustment terminal and the second power rail under the control of the first control signal to adjust the voltage of the second power rail. This allows for flexible switching of power supply modes to use the second power rail for power supply, ensuring that the voltage of the second power rail meets the power requirements of the central processing unit. This eliminates the need to design multiple independent power supply components to meet the power requirements of specific types of central processing units, reducing the area occupied by multiple power supply components on the server motherboard, providing layout space for other components, and reducing resource consumption.

[0012] According to an embodiment of this disclosure, the second control unit includes: a third resistor electrically connected between the third node and the power supply; a fourth switching transistor with its control terminal electrically connected to the controller and its two ends electrically connected to the third node and ground, respectively; and a fifth switching transistor with its control terminal electrically connected to the third node, its first end electrically connected to the voltage adjustment terminal, and its second end electrically connected to the second electric rail via the third node.

[0013] In this embodiment, the fourth switching transistor can electrically connect or isolate the third node from ground under the control of the first control signal; the fifth switching transistor can electrically connect or isolate the third node from ground under the control of the potential of the third node; and the third switching transistor can electrically connect or isolate the second rail from the voltage adjustment terminal under the control of the potential of the third node. Thus, the second rail and voltage adjustment terminal can be flexibly electrically connected or isolated via the fourth and fifth switching transistors, thereby meeting the power requirements of the central processing unit, reducing the area of ​​the server motherboard occupied by multiple power supply components, providing layout space for other components, and reducing resource consumption.

[0014] According to embodiments of this disclosure, the first switching transistor, the second switching transistor, and the fourth switching transistor are depletion-mode field-effect transistors, and the third switching transistor and the fifth switching transistor are enhancement-mode field-effect transistors.

[0015] In this embodiment, since the first and second switching transistors are depletion-mode field-effect transistors, they are easier to switch than the third switching transistor. This facilitates mode switching by the switching control circuit, improving mode switching efficiency. Furthermore, by reducing the difficulty of controlling the switching of the first and second switching transistors, resources used for this purpose are saved. Thus, the server motherboard area occupied by the power supply system can be further reduced without requiring multiple independent power supply components.

[0016] Furthermore, since the fourth switching transistor is a depletion-mode field-effect transistor, it is easier to switch than the fifth switching transistor, thus facilitating mode switching by the switching control circuit and improving mode switching efficiency. Additionally, the reduced difficulty in controlling the switching of the fourth switching transistor saves resources used for this purpose. In this way, the server motherboard area occupied by the power supply system can be further reduced without requiring multiple independent power supply components.

[0017] According to embodiments of this disclosure, the controller is further configured to generate a second control signal based on the type signal when a first control signal is generated; the power supply system further includes: a first power supply module electrically connected to a first power rail; a second power supply module electrically connected to a second power rail; and a feedback control device electrically connected to the first power supply module, the second power supply module, and the controller, wherein the feedback control device is configured to control the first power supply module and the second power supply module respectively to adjust the voltage of the first power rail and the second power rail under the control of the second control signal to adapt to the power demand of the central processing unit.

[0018] In this embodiment, after the controller uses the first control signal to control the switching control circuit to switch the power supply mode, it can use the second control signal to control the feedback control device, so that the feedback control device controls the first power supply module and the second power supply module to adjust the voltage of the first and second rails. In this way, based on the second control signal corresponding to the type of the central processing unit, the voltage of the first and second rails can be flexibly and adaptively adjusted after the power supply mode switch, thereby timely, conveniently, and flexibly meeting the power requirements of the central processing unit. Thus, the voltage of the first and second rails can be further adjusted without additional components, thereby reducing the server motherboard area occupied by the power supply system layout of this embodiment.

[0019] According to an embodiment of this disclosure, a first power supply module includes: a first voltage regulator connected to a first power rail; a first voltage regulation controller connected to the first voltage regulator and having a first differential remote detection pin; a second power supply module includes: a second voltage regulator connected to a second power rail; a second voltage regulation controller connected to the second voltage regulator and having a second differential remote detection pin; a feedback control device electrically connected to the first differential remote detection pin and the second differential remote detection pin, the feedback control device being used to control the first voltage regulation controller and the second voltage regulation controller respectively by adjusting the levels of the first differential remote detection pin and the second differential remote detection pin, such that the first voltage regulation controller controls the first voltage regulator to regulate the voltage of the first power rail, and the second voltage regulation controller controls the second voltage regulator to regulate the voltage of the second power rail.

[0020] In this embodiment, the feedback control device controls the first voltage regulator and the second voltage regulator respectively by adjusting the levels of the first differential remote detection pin and the second differential remote detection pin. This causes the first voltage regulator to control the first voltage regulator to adjust the voltage of the first rail, and the second voltage regulator to control the second voltage regulator to adjust the voltage of the second rail. Thus, based on the second control signal corresponding to the type of the central processing unit, the voltages of the first and second rails can be flexibly and adaptively adjusted after a power supply mode switch, promptly, conveniently, and flexibly meeting the power requirements of the central processing unit. Furthermore, even without multiple power supply components on the server motherboard, the voltages of the first and second rails can be further adjusted after merging or isolating them to meet the power requirements of the central processing unit, without requiring additional components. This reduces the server motherboard area occupied by the power supply system layout of this embodiment.

[0021] According to an embodiment of this disclosure, the feedback control device includes: a sixth switching transistor, the control terminal of which is electrically connected to the controller, and the two ends of which are respectively electrically connected to the first differential remote detection pin and the ground of the server motherboard; and a seventh switching transistor, the control terminal of which is electrically connected to the controller, and the two ends of which are respectively electrically connected to the second differential remote detection pin and the ground.

[0022] In this embodiment, the controller controls a sixth switching transistor via a second control signal to connect the first differential remote detection pin to ground, and a seventh switching transistor to connect the second differential remote detection pin to ground. This allows the controller to adjust the voltage levels of the first and second differential remote detection pins, thereby enabling the first voltage regulator to control the first voltage regulator to adjust the voltage of the first rail, and the second voltage regulator to control the second voltage regulator to adjust the voltage of the second rail. Thus, using two switching transistors, the voltages of the first and second rails can be flexibly and adaptively adjusted after power supply mode switching based on a second control signal corresponding to the type of the central processing unit, promptly, conveniently, and flexibly meeting the power requirements of the central processing unit. Furthermore, even without multiple power supply components on the server motherboard, the voltages of the first and second rails can be further adjusted after connecting or isolating them to meet the power requirements of the central processing unit, without requiring additional components, thereby reducing the server motherboard area occupied by the power supply system layout of this embodiment.

[0023] According to another aspect of this disclosure, a server is provided, comprising: a central processing unit; and any of the aforementioned power supply systems.

[0024] According to another aspect of this disclosure, a power supply method is provided, applied to any of the above-described power supply systems, comprising: a controller generating a first control signal based on a type signal from a central processing unit disposed on a server motherboard; and a switching control circuit switching the power supply modes of a first power rail and a second power rail to the central processing unit under the control of the first control signal, wherein, in the first power supply mode, the first power rail and the second power rail are electrically connected so that the first power rail and the second power rail jointly supply power to the central processing unit, and in the second power supply mode, the first power rail and the second power rail are electrically isolated from each other so that either the first power rail or the second power rail supplies power to the central processing unit.

[0025] According to embodiments of this disclosure, a power supply system, a server, and a power supply method are provided. The power supply system can be disposed on a server motherboard and electrically connected to a central processing unit (CPU) disposed on the server motherboard. Thus, a controller in the power supply system can provide a first control signal to a switching control circuit based on a CPU type signal to switch the power supply mode of a first and a second electrical rail connected to the switching control circuit for the CPU. Thus, under the control of the first control signal, the switching control circuit can electrically connect or electrically isolate the first and second electrical rails, so that the first and second electrical rails jointly supply power to the CPU, or that either the first or the second electrical rail supplies power to the CPU. In this way, the switching control circuit can be flexibly controlled to electrically connect or isolate the first and second electrical rails according to the CPU type, enabling flexible and efficient switching of the power supply mode for the specific CPU type to meet the CPU's power requirements. Based on this, by using a switching control circuit, the power requirements of different central processing units can be adaptively met, eliminating the need to design multiple independent power supply components to meet the power requirements of different central processing units. This reduces the area of ​​the server motherboard occupied by multiple power supply components, providing layout space for other components and reducing resource consumption. Attached Figure Description

[0026] The above and other objects, features and advantages of this disclosure will become clearer from the following description of embodiments of this disclosure with reference to the accompanying drawings, which will be explained in conjunction with the drawings.

[0027] Figure 1 A schematic diagram of a server according to an embodiment of the present disclosure is shown.

[0028] Figure 2 A schematic diagram of a power supply system according to an embodiment of the present disclosure is shown.

[0029] Figure 3 A schematic diagram of a power supply system according to another embodiment of the present disclosure is shown.

[0030] Figure 4 A schematic diagram of a power supply system according to another embodiment of the present disclosure is shown.

[0031] Figure 5 A schematic diagram of a power supply system according to another embodiment of the present disclosure is shown.

[0032] Figure 6 A schematic diagram of a switching control circuit according to another embodiment of the present disclosure is shown.

[0033] Figure 7 A schematic diagram of a power supply system according to another embodiment of the present disclosure is shown.

[0034] Figure 8 A schematic diagram of a power supply system according to another embodiment of the present disclosure is shown.

[0035] Figure 9 A schematic diagram of a feedback control device according to an embodiment of the present disclosure is shown.

[0036] Figure 10 A schematic diagram of a power supply method according to an embodiment of the present disclosure is shown. Detailed Implementation

[0037] The embodiments of the present disclosure will now be described with reference to the accompanying drawings. However, it should be understood that these descriptions are exemplary only and are not intended to limit the scope of the disclosure. In the following detailed description, numerous specific details are set forth to provide a thorough understanding of the embodiments of the present disclosure for ease of explanation. However, it will be apparent that one or more embodiments may be practiced without these specific details. Furthermore, descriptions of well-known structures and techniques are omitted in the following description to avoid unnecessarily obscuring the concepts of the present disclosure.

[0038] The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit this disclosure. The terms “comprising,” “including,” etc., as used herein indicate the presence of the stated features, steps, operations, and / or components, but do not exclude the presence or addition of one or more other features, steps, operations, or components.

[0039] All terms used herein (including technical and scientific terms) have the meanings commonly understood by those skilled in the art, unless otherwise defined. It should be noted that the terms used herein are to be interpreted in a manner consistent with the context of this specification, and not in an idealized or overly rigid way.

[0040] When using expressions such as "at least one of A, B and C", they should generally be interpreted in accordance with the meaning that is commonly understood by those skilled in the art (e.g., "a system having at least one of A, B and C" should include, but is not limited to, a system having A alone, a system having B alone, a system having C alone, a system having A and B, a system having A and C, a system having B and C, and / or a system having A, B and C, etc.).

[0041] Figure 1 A schematic diagram of a server according to an embodiment of the present disclosure is shown.

[0042] like Figure 1 As shown, the server in this embodiment can be in a network environment, for Figure 1This computer system provides services to client devices (such as personal computers, smartphones, etc.) not shown. When classified by instruction set architecture, the server type in this embodiment can be a Complex Instruction Set Computing (CISC) architecture server, a Reduced Instruction Set Computing (RISC) architecture server, or an Explicit Parallel Instruction Set Computing (EPIC) architecture server, etc. When classified by physical structure, the server type in this embodiment can be a tower server, a rack server, a blade server, or a cabinet server, etc. The physical form of the server motherboard can be a multilayer printed circuit board (PCB). The server motherboard provides mechanical fixation, electrical connections, and data transmission channels for the various functional units on it, so that these independent functional units can be integrated into a fully functional system.

[0043] Furthermore, the server in this embodiment may include a central processing unit (CPU). A CPU can refer to the core hardware component in the server that interprets and executes instructions and processes data. CPUs can also be classified into various types according to their power consumption requirements. In this embodiment, the server motherboard may be equipped with CPUs of various power consumption requirements. For example, CPUs with relatively high power consumption can be used to perform computational tasks with high responsiveness and high computing power requirements. CPUs with relatively low power consumption can be used to meet routine tasks, such as retrieving computational data.

[0044] Furthermore, in this embodiment, the server may also include a power supply system. This power supply system may be located on the server motherboard and electrically connected to the central processing unit (CPU) located on the server motherboard. Thus, the power supply system can automatically identify the type of the CPU and supply power to the CPU based on the power requirements corresponding to that type. It should be noted that in this embodiment, power may not be supplied to only a single CPU; in some embodiments, multiple CPUs may be supplied power separately according to their actual power requirements.

[0045] Furthermore, in some embodiments, the power supply system may be installed on the server motherboard before the central processing unit (CPU). Thus, when the CPU is installed on the server motherboard and electrically connected to the power supply system, the power supply system can directly adaptively identify and supply power to the CPU. Specifically, the CPU may be directly fixed (e.g., soldered) to the server motherboard after it is installed. However, this disclosure is not limited to this. In other embodiments, the CPU may be detachably installed on the server motherboard via a slot (e.g., a gold finger). The power supply system can also be electrically connected to pins within the slot to directly supply power to the CPU as needed when the CPU (e.g., in the form of a standard card) is plugged into the server motherboard.

[0046] However, the embodiments disclosed herein are not limited to this. In another embodiment, when the central processing unit (CPU) of the server motherboard is replaced, even if the power requirements of the CPU before and after replacement are different, the power supply system can adaptively identify the power requirements of the replaced CPU and supply power to it. This at least partially avoids setting up power supply components on the server motherboard to independently power multiple CPUs, reducing the area occupied by the server motherboard and reducing resource consumption. The power supply system of the embodiments of this disclosure will be further described below with reference to the accompanying drawings.

[0047] Figure 2 A schematic diagram of a power supply system according to an embodiment of the present disclosure is shown.

[0048] like Figure 2 As shown, in this embodiment, the power supply system may include a first power rail, a second power rail, and a switching control circuit disposed on the server motherboard. It should be understood that, although in Figure 2 Only one set of first rails, second rails, switching control circuits, and central processing units is shown in the illustration. However, the embodiments of this disclosure do not actually limit the number of each functional unit, such as the number of first rails, second rails, switching control circuits, controllers, and central processing units.

[0049] The first and second electrical rails can be conductive paths on a server motherboard for transmitting electrical power to various components. In some embodiments, the first and second electrical rails may have the same voltage, but are not limited to this; in other embodiments, the first and second electrical rails may have different voltages. For example, the voltage of the first electrical rail may be higher or lower than the voltage of the second electrical rail.

[0050] The switching control circuit can be electrically connected to the first power rail, the second power rail, and the central processing unit (CPU) on the server motherboard, respectively. Furthermore, the switching control circuit can be used to implement multiple power supply modes for the first and second power rails. Different power supply modes can be used to supply power to different types of CPUs based on the voltage of the first and second power rails, while meeting the power requirements of different types of CPUs. For example, in the first power supply mode, the switching control circuit can electrically connect the first and second power rails so that both power the CPU. In the second power supply mode, the switching control circuit can electrically isolate the first and second power rails from each other so that either the first or second power rail supplies power to the CPU, thereby adjusting the voltage amplitude supplied to the CPU.

[0051] In this embodiment of the disclosure, the power supply system may further include a controller disposed on the server motherboard. This controller can be used to control the switching control circuit to switch the power supply mode of the first and second power rails to the central processing unit. The controller may be implemented based on a complex programmable logic device (CPLD) or a microcontroller (MCU).

[0052] The controller can be electrically connected to the central processing unit (CPU) of the server motherboard and receive a type signal from the CPU. For example, the type signal can indicate the type of the CPU. Specifically, the type signal can carry a type ID for the CPU. It should be understood that different types of CPUs may have different power requirements.

[0053] Upon receiving this type of signal, the controller can parse it to obtain the type identifier carried by the signal. Based on the pre-stored mapping relationship between the type identifier and the corresponding central processing unit (CPU) type information, the controller identifies the type of CPU based on the parsed type identifier. Subsequently, a corresponding first control signal can be generated according to the type of CPU.

[0054] The controller can also be electrically connected to the switching control circuit to provide the first control signal to the switching control circuit, thereby enabling the switching control circuit to switch the power supply mode of the first and second electric rails to the central processing unit under the control of the first control signal.

[0055] In some solutions, switching between power rails lacking voltage regulation commands is difficult to achieve through digital multiphase control. In other solutions, only voltage regulation of the power rails can be implemented, but it is difficult to perform the splitting and merging operations between different power rails, thus limiting the functional coverage.

[0056] In this embodiment, the controller can provide a first control signal to the switching control circuit based on the type signal of the central processing unit (CPU) mounted on the server motherboard. Under the control of the first control signal, the switching control circuit can electrically connect the first and second power rails, or electrically isolate the first and second power rails, so that the first and second power rails jointly supply power to the CPU, or that either the first or second power rail supplies power to the CPU. Thus, the switching control circuit can flexibly control the electrical connection or isolation of the first and second power rails according to the type of CPU, flexibly and efficiently meeting the power requirements of the CPU. Based on this, by using the switching control circuit, the power requirements of different CPUs can be adaptively met, eliminating the need to design multiple independent power supply components to meet the power requirements of different CPUs. This reduces the area of ​​the server motherboard occupied by multiple power supply components, providing layout space for other components and reducing resource consumption.

[0057] In some embodiments, when the central processing unit of the server motherboard is replaced, even if the power requirements of the central processing unit before and after the replacement are different, the controller can adaptively identify the power requirements of the replaced central processing unit according to the replaced central processing unit, thereby supplying power to the central processing unit. This at least partially avoids setting up multiple power supply components on the server motherboard, reduces the area occupied by the server motherboard, and reduces resource consumption.

[0058] Figure 3 A schematic diagram of a power supply system according to another embodiment of the present disclosure is shown.

[0059] like Figure 3 As shown, the power supply system of this embodiment may include a controller, a switching control circuit, a first electric rail, and a second electric rail. A description of the controller, the switching control circuit, the first electric rail, and the second electric rail is provided in the attached description. Figure 2 The described embodiments are sufficient. Further, refer to... Figure 2 The first and second electrical rails are both directly electrically connected to the switching control circuit, but whether they are connected to the central processing unit is not directly shown. In some embodiments, after electrically isolating the first and second electrical rails from each other, the switching control circuit may electrically connect one of the first and second electrical rails to the central processing unit.

[0060] However, with Figure 2 The difference is that, in Figure 3 Another feasible embodiment is shown in the figure, see reference. Figure 3 The first power rail is electrically connected to the switching control circuit but not directly to the central processing unit (CPU). The second power rail, CPU, and switching control circuit are electrically connected through the same node (hereinafter referred to as the output node for ease of description). Thus, in the first power supply mode, the switching control circuit effectively connects the first power rail to the output node where the second power rail is connected to the CPU, thereby merging the first and second power rails so that both power rails jointly supply power to the CPU. In the second power supply mode, the switching control circuit can directly disconnect the first power rail from this output node, allowing the second power rail to directly supply power to the CPU via this output node.

[0061] It should be understood that in embodiments where the switching control circuit electrically connects one of the first and second rails to the central processing unit, a specific control path needs to be designed within the switching control circuit. Figure 3 In the illustrated embodiment, the switching control circuit can be omitted entirely and directly positioned between the first power rail and the output node. This reduces the area occupied by the power supply system on the server motherboard.

[0062] Figure 4 A schematic diagram of a power supply system according to another embodiment of the present disclosure is shown.

[0063] like Figure 4 As shown, the power supply system of this embodiment may include a controller, a first electric rail, and a second electric rail. The descriptions of the controller, the first electric rail, and the second electric rail are as described in the above embodiment.

[0064] The switching control circuit may include a first control unit electrically connected between the first and second power rails. Thus, the controller can directly provide a first control signal to the first control unit to control the first control unit to electrically connect the first and second power rails in a first power supply mode and electrically isolate the first and second power rails in a second power supply mode.

[0065] In this embodiment, the first control unit connected between the first and second power rails can, under the control of a first control signal, electrically connect or electrically isolate the first and second power rails. Thus, the first control unit can flexibly control the switching control circuit to electrically connect or isolate the first and second power rails according to the type of central processing unit, flexibly and efficiently meeting the power requirements of the central processing unit. This eliminates the need to design multiple independent power supply components to meet the power needs of different central processing units, thereby reducing the area occupied by multiple power supply components on the server motherboard, providing layout space for other components, and reducing resource consumption.

[0066] Figure 5 A schematic diagram of a power supply system according to another embodiment of the present disclosure is shown.

[0067] like Figure 5 As shown, the power supply system of this embodiment may include a controller, a first electric rail, and a second electric rail. The descriptions of the controller, the first electric rail, and the second electric rail are as described in the above embodiment.

[0068] Unlike the embodiments described above, in Figure 5 The switching control circuit shown may include a second control unit in addition to the first control unit described above. This second control unit may include an adjustment voltage terminal, which can be used to receive adjustment voltages from other functional units on the server motherboard and is electrically connected to the second power rail and the controller. It should be noted that in this embodiment, the second power rail can be directly electrically connected to the central processing unit (CPU) so that the CPU is powered via the second power supply mode. Specifically, when the switching control circuit is in the second power supply mode, the second control unit can electrically connect the voltage adjustment terminal to the second power rail to adjust the voltage of the second power rail, thereby ensuring that the voltage supplied by the second power rail to the CPU meets the CPU's power requirements.

[0069] In this embodiment, the first control unit and the second control unit are simultaneously controlled by the same first control signal. Thus, when the first control unit switches to the second power supply mode, the second control unit can adaptively connect the voltage adjustment terminal to the second power rail so that the voltage of the second power rail can meet the power requirements of the central processing unit.

[0070] Based on this, in this embodiment, the second power rail can serve as the power rail for supplying power to the central processing unit in the second power supply mode. In this mode, the second control unit can electrically connect the voltage adjustment terminal and the second power rail under the control of the first control signal to adjust the voltage of the second power rail. This allows for flexible switching of power supply modes to use the second power rail for power supply, ensuring that the voltage of the second power rail meets the power requirements of the central processing unit. This eliminates the need to design multiple independent power supply components to meet the power requirements of specific types of central processing units, reducing the area occupied by multiple power supply components on the server motherboard, providing layout space for other components, and reducing resource consumption.

[0071] Figure 6 A schematic diagram of a switching control circuit according to another embodiment of the present disclosure is shown.

[0072] like Figure 6 As shown, the switching control circuit is electrically connected to the controller, the first rail, and the second rail. For a description of the switching control circuit, controller, first rail, and second rail, please refer to the above embodiment. It should be noted that, for illustrative purposes, [the following is unclear and likely a fragment from another document] Figure 6 The central processing unit (CPU) is not shown, but it can be directly electrically connected to the second power rail. It should be understood that the server motherboard may have a power supply VDD (e.g., 5V). This power supply VDD can be used by the first control unit and the second control unit to achieve the aforementioned functions.

[0073] Specifically, the first control unit may include a first resistor R1, a second resistor R2, a first switching transistor T1, a second switching transistor T2, and a third switching transistor T3. The first resistor R1 is electrically connected between the power supply VDD and the first node N1. The second resistor R2 is electrically connected between the power supply VDD and the second node N2. The first switching transistor T1, the second switching transistor T2, and the third switching transistor T3 may be, for example, N-type field-effect transistors (NMOS).

[0074] Based on this, the control terminal (e.g., gate) of the first switching transistor T1 is electrically connected to the controller, and its other two terminals (e.g., drain and source) are electrically connected to the first node N1 and ground GND, respectively. The control terminal (e.g., gate) of the second switching transistor T2 is electrically connected to the first node N1, and its other two terminals (e.g., drain and source) are electrically connected to the second node N2 and ground GND, respectively. The control terminal (e.g., gate) of the third switching transistor T3 is electrically connected to the second node N2, its first terminal (e.g., drain) is electrically connected to the first rail, and its second terminal (e.g., source) is electrically connected to the second rail via the second node N2.

[0075] Thus, when the first control signal is at a first level (e.g., a high level (“1”), the first switching transistor T1 can electrically connect the first node N1 and ground GND. Consequently, the control terminal of the second switching transistor T2 and the potential of the first node N1 are pulled down, and the second switching transistor T2 is turned off. Conversely, the potential of the second node N2 and the control terminal of the third switching transistor T3 are pulled up, and the third switching transistor T3 is turned on, thereby electrically connecting the first rail to the output node NOUT, thus electrically connecting the first rail to the second rail. In this way, the power supply system is in the first power supply mode.

[0076] When the first control signal is at the second level (e.g., low level ("0")), the first switching transistor T1 can electrically disconnect the first node N1 from ground GND. This causes the control terminal of the second switching transistor T2 and the potential of the first node N1 to be pulled up by the power supply VDD, turning on the second switching transistor T2. Conversely, the potential of the second node N2 and the control terminal of the third switching transistor T3 is pulled down, turning off the third switching transistor T3, thereby electrically isolating the first and second power rails. Thus, the power supply system is in the second power supply mode.

[0077] Based on this, in this embodiment, the first switching transistor T1 can electrically connect or isolate the first node N1 and ground GND under the control of the first control signal; the second switching transistor T2 can electrically connect or isolate the second node N2 and ground GND under the control of the potential of the first node N1; and the third switching transistor T3 can electrically connect or isolate the first and second power rails under the control of the potential of the second node N2. In this way, the first and second power rails can be flexibly connected or isolated by the first switching transistor T1, the second switching transistor T2, and the third switching transistor T3, thereby meeting the power requirements of the central processing unit. This eliminates the need to design multiple independent power supply components to meet the power requirements of different central processing units, reducing the area occupied by multiple power supply components on the server motherboard, providing layout space for other components, and reducing resource consumption.

[0078] Furthermore, the second control unit may include a third resistor R3 and a fourth switching transistor T4. The third resistor R3 may be electrically connected between the third node N3 and the power supply VDD. The fourth switching transistor T4 may be an N-type field-effect transistor. The control terminal (e.g., gate) of the fourth switching transistor T4 is electrically connected to the controller, and its other two terminals (e.g., drain and source) are electrically connected to the third node N3 and ground GND, respectively. The control terminal (e.g., gate) of the fifth switching transistor T5 is electrically connected to the third node N3, its first terminal is electrically connected to a voltage adjustment terminal, and its second terminal is electrically connected to the second power rail via the third node N3.

[0079] Thus, when the first control signal is at the first level (e.g., a high level (“1”), the fourth switching transistor T4 can electrically connect the third node N3 and ground GND, so that the potential of the control terminal of the third node N3 and the fifth switching transistor T5 is pulled down, the fifth switching transistor T5 is turned off, thereby electrically disconnecting the voltage adjustment terminal and the second rail.

[0080] When the first control signal is at the second level (e.g., low level (“0”)), the fourth switching transistor T4 can disconnect the third node N3 and ground GND, so that the potential of the control terminal of the third node N3 and the fifth switching transistor T5 is pulled up, and the fifth switching transistor T5 is turned on, thereby making the voltage adjustment terminal electrically connected to the output node NOUT, so as to be electrically connected to the second rail.

[0081] In this embodiment, the fourth switching transistor T4 can electrically connect or isolate the third node N3 and ground GND under the control of the first control signal. The fifth switching transistor T5 can electrically connect or isolate the third node N3 and ground GND under the control of the potential of the third node N3. The third switching transistor T3 can electrically connect or isolate the second power rail and the voltage adjustment terminal under the control of the potential of the third node N3. Thus, the second power rail and the voltage adjustment terminal can be flexibly electrically connected or isolated by the fourth switching transistor T4 and the fifth switching transistor T5, thereby meeting the power requirements of the central processing unit, reducing the area of ​​the server motherboard occupied by multiple power supply components, providing layout space for other components, and reducing resource consumption.

[0082] Furthermore, in this embodiment, the first switching transistor T1, the second switching transistor T2, and the fourth switching transistor T4 are depletion-mode field-effect transistors, and the third switching transistor T3 and the fifth switching transistor T5 are enhancement-mode field-effect transistors. Also, since both the third switching transistor T3 and the fifth switching transistor T5 are electrically connected to the power rails, their dimensions can be larger than those of the first switching transistor T1, the second switching transistor T2, and the fourth switching transistor T4.

[0083] Based on this, the first switching transistor T1, the second switching transistor T2, and the fourth switching transistor T4 are easier to switch than the third switching transistor T3 and the fifth switching transistor T5, thus facilitating mode switching by the switching control circuit and improving mode switching efficiency. Furthermore, by reducing the difficulty of controlling the switching of the first switching transistor T1, the second switching transistor T2, and the fourth switching transistor T4, resources used for controlling their switching can be saved. In this way, the server motherboard area occupied by the power supply system can be further reduced without requiring multiple sets of independent power supply components.

[0084] However, it should be understood that the first control unit and the second control unit are not limited to the aforementioned switching transistors. In some embodiments, the first control unit and the second control unit may also include other switching transistors, as long as it is ensured that when the first control unit and the second control unit are simultaneously controlled by the first control signal, the switching transistors connected between the first and second electric rails in the first control unit and the switching transistors connected between the second electric rail and the voltage adjustment terminal in the second control unit have opposite conduction states.

[0085] Furthermore, the switching control circuit of this embodiment may also include components such as a fourth resistor R4 connected between the output terminal of the controller for providing the first control signal and ground GND, a fifth resistor R5 connected between the output terminal of the controller and the control terminal of the first switching transistor T1, a sixth resistor R6 connected between the second node N2 and the third switching transistor T3, a seventh resistor R7 connected between the third node N3 and the fifth switching transistor T5, a first capacitor C1 connected between the sixth resistor R6 and the output node NOUT, a second capacitor C2 and a third capacitor C3 connected between the output node NOUT and ground GND, and a fourth capacitor C4 connected between the control terminal of the fifth switching transistor T5 and the output node NOUT, to improve the quality of signal transmission within the switching control circuit, which will not be elaborated here. For example, the specification of the first resistor R1 can be 4.7KR1%0402. The specification of the second resistor R2 can be 4.7KR1%0402. The specification of the first switching transistor T1 can be 2N7002LT1G. The specification of the second switching transistor T2 can be 2N7002LT1G. The third switching transistor T3 can be a VS3603GPMT. The third resistor R3 can be a 4.7KΩ R1%0402. The fourth switching transistor T4 can be a 2N7002LT1G. The fifth switching transistor T5 can be a VS3603GPMT. The fourth resistor R4 can be a 4.7KΩ R1%0402. The fifth resistor R5 can be a 1KΩ R1%0402. The sixth resistor R6 can be a 0Ω R1%0402. The seventh resistor R7 can be a 0Ω R1%0402. The first capacitor C1 can be a C1u25X0402. The second capacitor C2 can be a C22u16X0805. The third capacitor C3 can be a C22u16X0805. The fourth capacitor C4 can be a C1u25X0402. It should be understood that this disclosure does not impose any limitations, and the specifications of the aforementioned components can be adjusted based on actual needs. Furthermore, it should be understood that... Figure 6 The diagram also shows the body diodes of each switching transistor; it should be understood that this is merely an illustrative example.

[0086] Figure 7 A schematic diagram of a power supply system according to another embodiment of the present disclosure is shown.

[0087] like Figure 7 As shown, the power supply system of this embodiment may include a controller, a switching control circuit, a first electric rail, and a second electric rail. The descriptions of the controller, the switching control circuit, the first electric rail, and the second electric rail are as described in the above embodiment. Furthermore, the power supply system of this embodiment may also include a first power supply module, a second power supply module, and a feedback control device.

[0088] In this embodiment of the disclosure, a first power supply module can be electrically connected to a first power rail and apply voltage to the first power rail. A second power supply module can be electrically connected to a second power rail and apply voltage to the second power rail.

[0089] In addition to generating a first control signal, the controller can also generate a second control signal based on a type signal, in addition to the first control signal. Specifically, the controller can determine whether the central processing unit belongs to a target type based on the type signal, according to a pre-deployed program, and generate a corresponding second control signal. The target type of central processing unit may refer to a central processing unit that is difficult to meet the power demand when only the first and second electric rails are electrically connected or electrically isolated.

[0090] The controller can be electrically connected to a feedback control device and provide the second control signal to the feedback control device. The feedback control device can also be electrically connected to a first power supply module and a second power supply module. Thus, under the control of the second control signal, the feedback control device can control the first power supply module and the second power supply module respectively to adjust the voltages of the first and second power rails to meet the power requirements of the central processing unit.

[0091] Based on this, in this embodiment, after the controller uses the first control signal to control the switching control circuit to switch the power supply mode, it can use the second control signal to control the feedback control device, so that the feedback control device controls the first power supply module and the second power supply module to adjust the voltage of the first and second rails. In this way, according to the second control signal corresponding to the type of the central processing unit, the voltage of the first and second rails can be flexibly and adaptively adjusted after the power supply mode switch, thereby timely, conveniently, and flexibly meeting the power demand of the central processing unit. Thus, the voltage of the first and second rails can be further adjusted without additional components, thereby reducing the server motherboard area occupied by the power supply system layout of this embodiment.

[0092] In addition, the controller can also be electrically connected to a feedback control device so as to read the voltage of the first power supply module and the second power supply module used by the feedback control device to control the first power supply module and the second power supply module, so as to indicate to the controller whether to stop controlling the first power supply module and the second power supply module according to the voltage, so that the voltage output by the first power supply module and the second power supply module to the first rail and the second rail respectively meets the power demand of the central processing unit.

[0093] Figure 8 A schematic diagram of a power supply system according to another embodiment of the present disclosure is shown.

[0094] like Figure 8As shown, the power supply system of this embodiment may include a controller, a switching control circuit, a first power supply module, a second power supply module, a first power rail, and a second power rail. The descriptions of the controller, the switching control circuit, the first power rail, and the second power rail are as described in the above embodiment.

[0095] In this embodiment, the first power supply module may include a first voltage regulator and a first voltage regulation controller. The first voltage regulator is electrically connected to a first power rail. The first voltage regulation controller is electrically connected to the first voltage regulator. The second power supply module may include a second voltage regulator and a second voltage regulation controller. The second voltage regulator is electrically connected to a second power rail. The second voltage regulation controller is electrically connected to the second voltage regulator.

[0096] For example, the first and second voltage regulators can be voltage regulators (VRs) on a server motherboard for DC-DC conversion. The first voltage regulator controller and the second voltage regulator controller can each be a controller on the server motherboard for controlling the first and second voltage regulators. For example, each of the first and second voltage regulators may include a switching transistor for voltage conversion. The first voltage regulator controller can control the output voltage of the first voltage regulator by switching the switching transistor of the first voltage regulator. The second voltage regulator controller can control the output voltage of the second voltage regulator by switching the switching transistor of the second voltage regulator. Specifically, the first voltage regulator controller can output a pulse-width modulation (PWM) signal to switch the switching transistor of the first voltage regulator to control the output voltage of the first voltage regulator. The second voltage regulator controller can output a PWM signal to switch the switching transistor of the second voltage regulator to control the output voltage of the second voltage regulator.

[0097] Furthermore, in this embodiment of the disclosure, the first voltage regulation controller has a first differential remote detection pin for signal sampling. The second voltage regulation controller has a second differential remote detection pin for signal sampling.

[0098] The feedback control device is electrically connected to the first differential remote detection pin and the second differential remote detection pin, and can adjust the levels of the first differential remote detection pin and the second differential remote detection pin. Thus, by adjusting the levels of the first differential remote detection pin and the second differential remote detection pin, the feedback control device controls the first voltage regulator and the second voltage regulator, respectively. The first voltage regulator controls the first voltage regulator to adjust the voltage of the first electric rail, and the second voltage regulator controls the second voltage regulator to adjust the voltage of the second electric rail.

[0099] In this embodiment, the feedback control device controls the first voltage regulator and the second voltage regulator respectively by adjusting the levels of the first differential remote detection pin and the second differential remote detection pin. This causes the first voltage regulator to control the first voltage regulator to adjust the voltage of the first rail, and the second voltage regulator to control the second voltage regulator to adjust the voltage of the second rail. Thus, based on the second control signal corresponding to the type of the central processing unit, the voltages of the first and second rails can be flexibly and adaptively adjusted after a power supply mode switch, promptly, conveniently, and flexibly meeting the power requirements of the central processing unit. Furthermore, even without multiple power supply components on the server motherboard, the voltages of the first and second rails can be further adjusted after merging or isolating them to meet the power requirements of the central processing unit, without requiring additional components. This reduces the server motherboard area occupied by the power supply system layout of this embodiment.

[0100] In addition, in some embodiments, the second voltage regulator may have an additional adjustment pin in addition to the output pin that is directly connected to the second electric rail. This adjustment pin can be electrically connected to the voltage adjustment terminal to provide the adjustment voltage to the second electric rail, which will not be described in detail here.

[0101] In addition, the controller can be electrically connected to the first differential remote detection pin and the second differential remote detection pin via a feedback control device to read the voltage used by the feedback control device to control the first voltage regulator and the second voltage regulator, so as to indicate to the controller whether to stop controlling the first voltage regulator and the second voltage regulator based on the voltage, so that the voltage output by the first voltage regulator and the second voltage regulator to the first electric rail and the second electric rail respectively meets the power requirements of the central processing unit.

[0102] Figure 9 A schematic diagram of a feedback control device according to an embodiment of the present disclosure is shown.

[0103] like Figure 9As shown, the feedback control device may include a sixth switching transistor T6 and a seventh switching transistor T7. For example, the sixth switching transistor T6 and the seventh switching transistor T7 may be N-type field-effect transistors, specifically depletion-type N-type field-effect transistors, and the specifications of the sixth switching transistor T6 and the seventh switching transistor T7 may be 2N7002LT1G. The control terminal (e.g., gate) of the sixth switching transistor T6 is electrically connected to the controller, and its other two terminals (e.g., drain and source) are electrically connected to the first differential remote detection pin and the ground GND of the server motherboard, respectively. The control terminal (e.g., gate) of the seventh switching transistor T7 is electrically connected to the controller, and its other two terminals (e.g., drain and source) are electrically connected to the second differential remote detection pin and the ground GND, respectively. The first differential remote detection pin includes a first differential remote detection positive pin V0SNS+ and a first differential remote detection negative pin V0SNS-. The second differential remote detection pin includes a second differential remote detection positive pin V1SNS+ and a second differential remote detection negative pin V1SNS-.

[0104] Thus, when the second control signal is at the first level (e.g., high level (“1”), the sixth switching transistor T6 can electrically connect the first differential remote detection pin to ground GND to adjust the initial level of the first differential remote detection pin using the ground signal; at the same time, the seventh switching transistor T7 can electrically connect the second differential remote detection pin to ground GND to adjust the initial level of the second differential remote detection pin using the ground signal.

[0105] When the second control signal is at the second level (e.g., low level (“0”), the sixth switching transistor T6 can electrically disconnect the first differential remote detection pin from ground GND, and the level of the first differential remote detection pin can be reset to the initial level; at the same time, the seventh switching transistor T7 can electrically disconnect the second differential remote detection pin from ground GND, and the level of the second differential remote detection pin can be reset to the initial level.

[0106] Thus, the first voltage regulator and the second voltage regulator can control the first voltage regulator and the second voltage regulator respectively based on the initial level of the first differential remote detection pin and the level after being regulated by the ground signal, so as to regulate the voltage of the first electric rail and the voltage of the second electric rail. It should be understood that the above voltage regulation process is only an example of the case where the first electric rail and the second electric rail are jointly powered. In some embodiments, only the voltage of the second electric rail can be regulated.

[0107] Based on this, in this embodiment, the controller controls the sixth switching transistor T6 to electrically connect the first differential remote detection pin to ground (GND) via a second control signal, and the seventh switching transistor T7 to electrically connect the second differential remote detection pin to ground (GND). The ground signal can be used to adjust the levels of the first and second differential remote detection pins, thereby enabling the first voltage regulation controller to control the first voltage regulator to adjust the voltage of the first rail, and the second voltage regulation controller to control the second voltage regulator to adjust the voltage of the second rail. Thus, through two switching transistors, the voltages of the first and second rails can be flexibly and adaptively adjusted after power supply mode switching based on the second control signal corresponding to the type of the central processing unit, timely, conveniently, and flexibly meeting the power requirements of the central processing unit. Furthermore, even without multiple power supply components on the server motherboard, the voltages of the first and second rails can be further adjusted after connecting or isolating them to meet the power requirements of the central processing unit, without requiring additional components, thereby reducing the server motherboard area occupied by the power supply system layout of this embodiment.

[0108] Furthermore, the feedback control device in this embodiment may also include various components for improving the quality of the second control signal, such as a ninth resistor R9 connected between the controller and the control terminal of the sixth switching transistor T6, a tenth resistor R10 connected between the control terminal of the sixth switching transistor T6 and the 3.3V power supply, an eleventh resistor R11 connected between the control terminal of the sixth switching transistor T6 and ground GND, a twelfth resistor R12 connected between the controller and the control terminal of the seventh switching transistor T7, a thirteenth resistor R13 connected between the control terminal of the seventh switching transistor T7 and the 3.3V power supply, and a fourteenth resistor R14 connected between the control terminal of the seventh switching transistor T7 and ground GND. These details are not elaborated here. For example, the specification of the ninth resistor R9 can be 0R1%0402. The specification of the tenth resistor R10 can be 0R1%0402. The specification of the eleventh resistor R11 can be 4.7KR1%0402. The specification of the twelfth resistor R12 can be 0R1%0402. The specification for the thirteenth resistor R13 can be 0R1%0402. The specification for the fourteenth resistor R14 can be 4.7KR1%0402.

[0109] In some embodiments, the first sampling terminal of the central processing unit (CPU) may be electrically connected to the first differential remote sensing positive pin V0SNS+, and the negative reference terminal (e.g., ground) of the CPU may be electrically connected to the first differential remote sensing negative pin V0SNS-. Specifically, the first sampling terminal of the CPU may be electrically connected to the first differential remote sensing positive pin V0SNS+ via the first sampling capacitor CS1 and the first sampling resistor RS1, and the negative reference terminal of the CPU may be electrically connected to the second differential remote sensing negative pin V1SNS- via the second sampling resistor RS2 and the third sampling resistor RS3.

[0110] Furthermore, in this embodiment, the first differential remote detection positive pin V0SNS+ can also be electrically connected to the connection node of the second sampling resistor RS2 and the third sampling resistor RS3. A fourth sampling resistor RS4 can be connected between this connection node and the first terminal of the sixth switching transistor T6. The second terminal of the sixth switching transistor T6 is grounded (GND). For example, the first sampling capacitor CS1 can be a C120p50N0402. The first sampling resistor RS1 can be a 0R1%0402. The second sampling resistor RS2 can be a 10KR1%0402. The third sampling resistor RS3 can be a 6.65KR1%0402. The fourth sampling resistor RS4 can be a 20KR1%0402.

[0111] Similarly, the second sampling terminal of the central processing unit (CPU) can be electrically connected to the positive pin V1SNS+ of the second differential remote sensing, and the negative reference terminal (e.g., ground) of the CPU can be electrically connected to the negative pin V1SNS- of the second differential remote sensing. Specifically, the second sampling terminal of the CPU can be electrically connected to the positive pin V1SNS+ of the second differential remote sensing via the second sampling capacitor CS2 and the fifth sampling resistor RS5, and the negative reference terminal of the CPU can be electrically connected to the negative pin V1SNS- of the second differential remote sensing via the sixth sampling resistor RS6 and the seventh sampling resistor RS7.

[0112] Furthermore, in this embodiment, the second differential remote detection positive pin V1SNS+ can also be electrically connected to the connection node of the sixth sampling resistor RS6 and the seventh sampling resistor RS7. An eighth sampling resistor RS8 can be connected between this connection node and the first terminal of the seventh switching transistor T7. The second terminal of the seventh switching transistor T7 is grounded (GND). For example, the specification of the second sampling capacitor CS2 can be C120p50N0402. The specification of the fifth sampling resistor RS5 can be 0R1%0402. The specification of the sixth sampling resistor RS6 can be 10KR1%0402. The specification of the seventh sampling resistor RS7 can be 6.65KR1%0402. The specification of the eighth sampling resistor RS8 can be 20KR1%0402.

[0113] Based on this, when the sixth switching transistor T6 and the seventh switching transistor T7 are turned on, the sixth switching transistor T6 and the seventh switching transistor T7 can respectively adjust the levels of the first differential remote detection pin (i.e., the first differential remote detection positive pin V0SNS+ and the first differential remote detection negative pin V0SNS-) and the second differential remote detection pin (i.e., the second differential remote detection positive pin V1SNS+ and the second differential remote detection negative pin V1SNS-) via their corresponding connection nodes. In this way, the controller can control the first voltage regulator and the second voltage regulator, so that the first voltage regulator and the second voltage regulator can respectively adjust the voltages of the first and second electric rails, thereby accurately meeting the needs of the central processing unit.

[0114] With the sixth switching transistor T6 and the seventh switching transistor T7 adjusting the voltages of the first and second differential remote detection pins, the central processing unit (CPU) can read the voltage of the first differential remote detection pin and the voltage of the second differential remote detection pin. Based on the read voltages, the CPU can determine whether the power supply to the first and second rails meets the power requirements. If not, the CPU sends an indication signal to the controller to stop generating the second control signal, causing the sixth switching transistor T6 and the seventh switching transistor T7 to turn off, and adjusting the voltages (e.g., voltage amplitude) of the first and second rails so that the adjusted voltages meet the CPU's requirements. This allows for flexible adjustment of the voltages of the first and second rails without additional components, reducing the server motherboard area occupied by the power supply system layout of this embodiment and improving the effective utilization of the server motherboard. It should be understood that if the power requirements are met, the CPU does not need to perform any additional operations.

[0115] Figure 10 A schematic diagram of a power supply method according to an embodiment of the present disclosure is shown.

[0116] like Figure 10 The power supply method described in this embodiment can be applied to any of the power supply systems described in the foregoing embodiments. The power supply method may include operations S1010 to S1020.

[0117] When operating S1010, the controller generates a first control signal based on the type signal from the central processing unit located on the server motherboard.

[0118] In operation S1020, the switching control circuit switches the power supply mode of the first and second electric rails to the central processing unit under the control of the first control signal.

[0119] As described above, in the first power supply mode, the first and second power rails can be electrically connected so that both power rails supply power to the central processing unit. In the second power supply mode, the first and second power rails can be electrically isolated from each other so that either the first or second power rail supplies power to the central processing unit. However, it should be understood that the embodiments of this disclosure are not limited to this. The power supply method of the embodiments of this disclosure may also include other operations. For details, please refer to the operations of the power supply systems of each embodiment described above, which will not be repeated here.

[0120] Those skilled in the art will understand that the features described in the various embodiments of this disclosure can be combined and / or combined in various ways, even if such combinations or combinations are not explicitly described in this disclosure. In particular, the features described in the various embodiments of this disclosure can be combined and / or combined in various ways without departing from the spirit and teachings of this disclosure. All such combinations and / or combinations fall within the scope of this disclosure.

[0121] The embodiments of this disclosure have been described above. However, these embodiments are for illustrative purposes only and are not intended to limit the scope of this disclosure. Although various embodiments have been described above, this does not mean that the measures in the various embodiments cannot be used advantageously in combination. Various substitutions and modifications can be made by those skilled in the art without departing from the scope of this disclosure, and all such substitutions and modifications should fall within the scope of this disclosure.

Claims

1. A power supply system, characterized in that, Including those installed on the server motherboard: First electric rail and second electric rail; A controller is configured to generate a first control signal based on a type signal from a central processing unit located on the server motherboard; A switching control circuit, electrically connected to the first power rail, the second power rail, and the controller, is used to switch the power supply modes of the first power rail and the second power rail to the central processing unit under the control of the first control signal. In the first power supply mode, the first and second power rails are electrically connected so that the first and second power rails jointly supply power to the central processing unit. In the second power supply mode, the first and second power rails are electrically isolated from each other so that either the first or the second power rail supplies power to the central processing unit.

2. The power supply system according to claim 1, characterized in that, The switching control circuit includes: A first control unit is electrically connected between the first and second electric rails, and its control terminal is connected to the controller. The first control unit is configured to: electrically connect the first power rail and the second power rail when the switching control circuit is in the first power supply mode; and electrically isolate the first power rail and the second power rail when the switching control circuit is in the second power supply mode.

3. The power supply system according to claim 2, characterized in that, The server motherboard is also equipped with a power supply. The first control unit includes: The first resistor is electrically connected between the power source and the first node; The second resistor is electrically connected between the power source and the second node. The first switching transistor has its control terminal electrically connected to the controller, its first terminal electrically connected to the first node, and its second terminal grounded. The second switching transistor has its control terminal electrically connected to the first node, its first terminal electrically connected to the second node, and its second terminal grounded. The third switching transistor has its control terminal electrically connected to the second node, its first terminal electrically connected to the first rail, and its second terminal electrically connected to the second rail via the second node. Wherein, the first switching transistor and the second switching transistor are depletion-type field-effect transistors, and the third switching transistor is an enhancement-type field-effect transistor.

4. The power supply system according to claim 3, characterized in that, The second electrical rail is electrically connected to the central processing unit so that the central processing unit can be powered via the second electrical rail in the second power supply mode; The switching control circuit further includes: The second control unit includes an adjustment voltage terminal for receiving adjustment voltage, and the second control unit is electrically connected to the second electric rail and the controller. The second control unit is used to electrically connect the voltage adjustment terminal and the second electric rail when the switching control circuit is in the second power supply mode, so as to adjust the voltage of the second electric rail using the adjustment voltage.

5. The power supply system according to claim 4, characterized in that, The second control unit includes: The third resistor is electrically connected between the third node and the power source; The fourth switching transistor has its control terminal electrically connected to the controller, its first terminal electrically connected to the third node, and its second terminal grounded. The fifth switching transistor has its control terminal electrically connected to the third node, its first terminal electrically connected to the voltage adjustment terminal, and its second terminal electrically connected to the second electric rail via the third node. The fourth switching transistor is a depletion-type field-effect transistor, and the fifth switching transistor is an enhancement-type field-effect transistor.

6. The power supply system according to any one of claims 1 to 5, characterized in that, The controller is further configured to generate a second control signal based on the type signal when the first control signal is generated; The power supply system also includes: The first power supply module is electrically connected to the first power rail; The second power supply module is electrically connected to the second power rail; The feedback control device is electrically connected to the first power supply module, the second power supply module, and the controller. The feedback control device is used to control the first power supply module and the second power supply module respectively to adjust the voltage of the first electric rail and the second electric rail under the control of the second control signal, so as to adapt to the power demand of the central processing unit.

7. The power supply system according to claim 6, characterized in that, The first power supply module includes: A first voltage regulator is connected to the first electric rail; A first voltage regulation controller is connected to the first voltage regulator and has a first differential remote detection pin; The second power supply module includes: A second voltage regulator is connected to the second electric rail; A second voltage regulation controller is connected to the second voltage regulator and has a second differential remote detection pin; The feedback control device is electrically connected to the first differential remote detection pin and the second differential remote detection pin. The feedback control device is used to control the first voltage regulator and the second voltage regulator respectively by adjusting the levels of the first differential remote detection pin and the second differential remote detection pin, so that the first voltage regulator controls the first voltage regulator to adjust the voltage of the first electric rail, and the second voltage regulator controls the second voltage regulator to adjust the voltage of the second electric rail.

8. The power supply system according to claim 7, characterized in that, The feedback control device includes: The sixth switching transistor has its control terminal electrically connected to the controller, its first terminal electrically connected to the first differential remote detection pin, and its second terminal grounded. The seventh switching transistor has its control terminal electrically connected to the controller, its first terminal electrically connected to the second differential remote detection pin, and its second terminal grounded.

9. A server, characterized in that, include: Central processing unit; as well as The power supply system as described in any one of claims 1 to 8.

10. A power supply method, applied to a power supply system according to any one of claims 1 to 8, characterized in that, The method includes: The controller generates a first control signal based on the type signal from the central processing unit located on the server motherboard; The switching control circuit, under the control of the first control signal, switches the power supply mode of the first and second electric rails to the central processing unit, wherein... In the first power supply mode, the first and second power rails are electrically connected so that the first and second power rails jointly supply power to the central processing unit. In the second power supply mode, the first and second power rails are electrically isolated from each other so that either the first or the second power rail supplies power to the central processing unit.

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