Design method of server power supply supporting two main path output voltage modes

Abstract

The invention relates to the technical field of server power supplies, and belongs to a design method of a server power supply supporting two main path output voltage modes. On the basis of the design architecture of the existing server power supply, a PFC (Power Factor Correction) functional module is kept unchanged, and software and hardware are simultaneously improved on a DCDC (Direct Current / Direct Current) module, so that the design of the server power supply is realized under the architecture of one server power supply. And two main path output voltage modes are supported. Hardware design of the server power supply supporting two main path output voltage modes is provided, and the design of the two main path output voltage modes of the server power supply can be realized by matching with design improvement of software in a DSP1. A customer can switch the output voltage of the main circuit at any time according to requirements. In addition, under the condition that the server system has a new power supply voltage requirement, the development period can be shortened.

Description

Technical Field

[0001] The present invention relates to the technical field of server power supplies, and belongs to a design method for a server power supply that supports two main output voltage modes. Background Art

[0002] In recent years, modern information technology has developed vigorously, and the Internet industry has also undergone earth-shaking changes. In this development process, servers play a crucial role. It provides services such as data storage, processing, and transmission for enterprises, institutions, and individuals. As the power supply device of the server system, the server power supply is of vital importance. In the server power supply with the CRPS specification, the output voltage is mainly 12V, but in some AI and liquid-cooled server systems, there are power supply requirements of 54V and 48V.

[0003] As Figure 1 shown, in the existing server power supply design, the input voltage is connected to the PFC circuit after EMI filtering, and the input voltage will be boosted to about 400V. The 400V BULK capacitor voltage is stepped down to the required output voltage through the DCDC circuit. The output voltage has only one value: 12V, 48V, 54V, etc. Among them, the internal design architecture of the DCDC functional module is as Figure 2 shown. After the BULK capacitor voltage is inverted, it is transformed through a transformer, and then the required main output voltage is output after rectification and filtering.

[0004] Since there is a transformer in the DCDC circuit for voltage transformation and isolation, the reference grounds before and after the transformer are different. Therefore, the PFC circuit and the DCDC circuit are controlled by DSP1 and DSP2 respectively. DSP1 and DSP2 communicate data through UART to transfer relevant data information.

[0005] The design of the server power supply only supports one main voltage output mode: 12V, or 54V, etc. If the server power supply supports two main output voltage modes, it means that for the same power supply, customers can specify the main output voltage according to their own needs, so that it can be applied to more occasions. In addition, in some cases of unexpected voltage requirements without preparation, such as: Company A originally had a server system with a 12V power supply, and suddenly introduced a server system with a 54V power supply requirement. Customers can promptly change the main output voltage mode to provide normal power supply for the 54V server system and shorten the R & D cycle. Summary of the Invention

[0006] In view of the above technical problems, the present invention provides a design method for a server power supply that supports two main output voltage modes.

[0007] To achieve the above object, the present invention provides the following technical solutions: On the one hand, a server power supply supporting two main output voltage modes is provided, including a processing module and a voltage output module. The processing module is connected to the voltage output module through a GPIO driving method. The processing module includes a microprocessor DSP1 and a microprocessor DSP2. The processor DSP1 and the microprocessor DSP2 are connected through UART communication. One end of the microprocessor DSP1 is connected to a power supply module, and a software control module for voltage switching is included in the microprocessor DSP1.

[0008] Preferably, the voltage output module includes a transformer T0 and a transformer T1. The transformer T0 and the transformer T1 are connected in parallel. Inverters and rectifiers are respectively connected in series at both ends of the transformer T0. The inverters and the rectifiers are respectively connected in series at both ends of the transformer T1. A relay K1 / K2 is connected between the transformer T0 and the inverter, and a relay K3 / K4 is connected between the transformer T1 and the inverter.

[0009] Preferably, the processor DSP1 is connected to the relay K1 / K2 and the relay K3 / K4 through a GPIO driving method.

[0010] Preferably, the inverter is connected to the Vbulk voltage, and a capacitor C1 is connected in parallel between the inverter and the Vbulk voltage.

[0011] Preferably, the rectifier is connected to the Vout voltage, and a capacitor C2 is connected in parallel between the rectifier and the Vout voltage.

[0012] Preferably, the power supply module includes a DIP switch K5. One end of the DIP switch K5 is connected in series with a resistor R1, and the other end is connected in series with a resistor R2. The resistor R1 is connected to the power supply voltage Vcc, and the resistor R2 is connected to the ground terminal GND. The DIP switch K5 is connected to the microprocessor DSP1.

[0013] On the other hand, a control method for a server power supply supporting two main output voltage modes is provided, including the following steps: S1. The user selects the main output voltage mode through the DIP switch K5; S2. The microprocessor DSP1 automatically detects the level signal of the DIP switch K5; S3. According to the level signal detected in S2, the microprocessor DSP1 controls the opening and closing states of the relay K1 / K2 and the relay K3 / K4 to perform the switching of the main output voltage. S4. The microprocessor DSP1 communicates with the microprocessor DSP2 via UART. The microprocessor DSP2 enters the main output voltage loop corresponding to the transformer T0 to control the next voltage switch.

[0014] Preferably, the level signals of the DIP switch K5 in S2 include high level and low level.

[0015] Compared with the prior art, the present invention provides a design method for a server power supply supporting two main output voltage modes, having the following beneficial effects: 1. On the basis of only adding a few hardware devices, combined with the design improvement in software, the server power supply can be made to have two main output voltage modes.

[0016] 2. It breaks the design mode that the existing server power supply can only support one fixed main output voltage, broadening the application scope and application mode of the same server power supply; in case of emergency needs, for example, when the customer has a power supply failure of the 54V power supply and only has a 12V backup power supply on hand and no 54V main output backup power supply, with the two main output voltage modes, the customer can choose based on their own needs, reducing the probability of power supply failure of the server system; in certain cases, it can shorten the R & D cycle. For example, the customer originally only has a general server system powered by 12V and no AI server system powered by 54V. When developing a new system, the output voltage can be selected based on actual needs to ensure power supply and shorten the R & D cycle.

[0017] The features and advantages of the present invention will be described in detail through embodiments in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is the existing design architecture of the existing server power supply; Figure 2 is the internal design architecture of the existing DCDC module; Figure 3 is the hardware design block diagram of the design method for a server power supply supporting two main output voltage modes of the present invention; Figure 4 is the software control logic block diagram of the design method for a server power supply supporting two main output voltage modes of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] To make the purpose, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below through the accompanying drawings and embodiments. However, it should be understood that the specific embodiments described herein are only used to explain the present invention and do not limit the scope of the present invention. In addition, in the following description, the description of well-known structures and technologies is omitted to avoid unnecessarily confusing the concepts of the present invention.

[0020] Embodiment 1 Referring to Figure 3 , the present invention provides a server power supply supporting two main output voltage modes, including a processing module and a voltage output module. The processing module is connected to the voltage output module through a GPIO driving mode. The processing module includes a microprocessor DSP1 and a microprocessor DSP2. The processor DSP1 and the microprocessor DSP2 are communicatively connected through UART. One end of the microprocessor DSP1 is connected to a power supply module, and a software control module for voltage switching is included in the microprocessor DSP1.

[0021] Specifically, the voltage output module includes a transformer T0 and a transformer T1. The transformer T0 and the transformer T1 are connected in parallel. An inverter and a rectifier are respectively connected in series at both ends of the transformer T0. The inverter and the rectifier are respectively connected in series at both ends of the transformer T1. A relay K1 / K2 is connected between the transformer T0 and the inverter, and a relay K3 / K4 is connected between the transformer T1 and the inverter.

[0022] Specifically, the processor DSP1 is connected to the relay K1 / K2 and the relay K3 / K4 through a GPIO driving mode.

[0023] Specifically, the inverter is connected to the Vbulk voltage, and a capacitor C1 is connected in parallel between the inverter and the Vbulk voltage.

[0024] Specifically, the rectifier is connected to the Vout voltage, and a capacitor C2 is connected in parallel between the rectifier and the Vout voltage.

[0025] Specifically, the power supply module includes a DIP switch K5. One end of the DIP switch K5 is connected in series with a resistor R1, and the other end is connected in series with a resistor R2. The resistor R1 is connected to the power supply voltage Vcc, the resistor R2 is connected to the ground terminal GND, and the DIP switch K5 is connected to the microprocessor DSP1.

[0026] Embodiment 2 Referring to Figure 4 , the present invention provides a control method for a server power supply supporting two main output voltage modes, including the following steps: S1. The user selects the main output voltage mode through the DIP switch K5; S2. The microprocessor DSP1 automatically detects the level signal of the DIP switch K5; S3. According to the level signal detected in S2, the microprocessor DSP1 controls the opening and closing states of the relays K1 / K2 and K3 / K4 to switch the main output voltage; S4. The microprocessor DSP1 communicates with the microprocessor DSP2 via UART. The microprocessor DSP2 enters the main output voltage loop corresponding to the transformer T0 to control the next voltage switch.

[0027] Specifically, the level signals of the DIP switch K5 in S2 include high level and low level.

[0028] Embodiment 3 Combined with Figure 3 、 Figure 4 the shown hardware and software design logics: The user can select the main output voltage mode through the DIP switch K5 to achieve the output of two main voltage modes. When K5 is toggled to the high level, the microprocessor DSP1 detects that the signal of the DIP switch K5 is high. The microprocessor DSP1 controls the relays R1 / R2 to close and the relays R3 / R4 to open. At the same time, the microprocessor DSP1 communicates with the microprocessor DSP2 via UART. The microprocessor DSP2 will enter the control loop of the output voltage 1, that is, the main output voltage loop corresponding to the transformer T0.

[0029] Vice versa.

[0030] In this way, with only a few additional hardware components, the server power supply can achieve two main output voltage modes in combination with the corresponding software design. Moreover, for these two main output voltage modes, the user can switch based on the current requirements without limit on the number of times and time.

[0031] The differences from before the improvement are as follows: Before the improvement, the server power supply had only one fixed main output voltage mode. The same server power supply could only be applied in a fixed and single power supply voltage system; in some emergency situations with other power supply voltage requirements, it could not provide quick power supply.

[0032] After the improvement, on the basis of only adding a few hardware components, the server power supply can achieve two main output voltage modes in combination with software design. Moreover, the customer can switch the main output voltage according to the demand at any time. In addition, when there are new power supply voltage requirements for the server system, the development cycle can also be shortened.

[0033] Embodiment 4 It is set that the server power supply has two main output voltage modes: 12V and 54V. When the microprocessor DSP1 detects that the signal of the DIP switch K5 is at the high level, the default output voltage of the server power supply is 12V; when the microprocessor DSP1 detects that the signal of the DIP switch K5 is at the low level, the default output voltage of the server power supply is 54V. The software and hardware designs of the PFC function module remain unchanged.

[0034] Combined with Figure 3 、Figure 4 When the DIP switch K5 is selected to be connected to the pull-up resistor R1, the pull-down resistor R2 is disconnected. At this time, the input voltage detected by the corresponding GPIO port of the microprocessor DSP1 is high level, and the microprocessor DSP1 will control the relay R1 / R2 to close and the relay R3 / R4 to open, that is, the transformer T0 is connected to the hardware circuit. At the same time, the microprocessor DSP1 will send a signal to the microprocessor DSP2 through UART communication, and the microprocessor DSP2 will enter the control loop of the 12V main output voltage. In this way, after the server power supply is turned on, the 12V main output voltage will be normally output.

[0035] Conversely, when the DIP switch K5 is selected to be connected to the pull-down resistor R2, the pull-up resistor R1 is disconnected. At this time, the input voltage detected by the corresponding GPIO port of the microprocessor DSP1 is low level, and the microprocessor DSP1 will control the relay R1 / R2 to open and the relay R3 / R4 to close, that is, the transformer T1 is connected to the hardware circuit. At the same time, the microprocessor DSP1 will send a signal to the microprocessor DSP2 through UART communication, and the microprocessor DSP2 will enter the control loop of the 54V main output voltage. In this way, after the server power supply is turned on, the 54V main output voltage will be normally output.

[0036] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements or improvements made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A server power supply supporting two main circuit output voltage modes, characterized in that: It includes a processing module and a voltage output module. The processing module is connected to the voltage output module in a GPIO driving manner. The processing module includes a microprocessor DSP1 and a microprocessor DSP2. The processor DSP1 and the microprocessor DSP2 are communicatively connected via UART. One end of the microprocessor DSP1 is connected to a power supply module, and a software control module for voltage switching is included in the microprocessor DSP1.

2. The server power supply supporting two main output voltage modes as described in claim 1, characterized in that: The voltage output module includes a transformer T0 and a transformer T1. The transformer T0 and the transformer T1 are connected in parallel. An inverter and a rectifier are respectively connected in series at both ends of the transformer T0. The inverter and the rectifier are respectively connected in series at both ends of the transformer T1. A relay K1 / K2 is connected between the transformer T0 and the inverter, and a relay K3 / K4 is connected between the transformer T1 and the inverter.

3. The server power supply supporting two main circuit output voltage modes according to claim 2, wherein: The processor DSP1 is connected to the relay K1 / K2 and the relay K3 / K4 in a GPIO driving manner.

4. The server power supply supporting two main output voltage modes according to claim 2, wherein: The inverter is connected to the Vbulk voltage, and a capacitor C1 is connected in parallel between the inverter and the Vbulk voltage.

5. The server power supply supporting two main output voltage modes as described in claim 2, wherein: The rectifier is connected to the Vout voltage, and a capacitor C2 is connected in parallel between the rectifier and the Vout voltage.

6. The server power supply supporting two main output voltage modes as claimed in claim 1, characterized in that: The power supply module includes a DIP switch K5. One end of the DIP switch K5 is connected in series with a resistor R1, and the other end is connected in series with a resistor R2. The resistor R1 is connected to the power supply voltage Vcc, the resistor R2 is connected to the ground terminal GND, and the DIP switch K5 is connected to the microprocessor DSP1.

7. A server power control method supporting two main output voltage modes, characterized in that: It includes the following steps: S1. The user selects the main path output voltage mode through the DIP switch K5. S2. The microprocessor DSP1 automatically detects the level signal of the DIP switch K5. S3. According to the level signal detected in S2, the microprocessor DSP1 controls the opening and closing states of the relay K1 / K2 and the relay K3 / K4 to switch the main path output voltage. S4. The microprocessor DSP1 and the microprocessor DSP2 perform UART communication, and the microprocessor DSP2 enters the main path output voltage loop corresponding to the transformer T0 to control the next voltage switching.

8. The server power supply control method supporting two main path output voltage modes as described in claim 7, wherein: The level signal of the DIP switch K5 in S2 includes a high level and a low level.

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