CN115276392B - Power supply unit and server power supply system - Google Patents

Abstract

This application is applicable to the field of power supply technology and specifically discloses a power supply unit and a server power supply system. The external structure includes a power supply body and power input pins, power output pins, auxiliary detection pins and The internal structure of the detection receiving pin includes a power conversion module located between the power input pin and the power output pin, and a first voltage conversion located between the output end of the power conversion module and the auxiliary detection pin. The circuit and the detection controller used to control the power conversion module and the first voltage conversion circuit realize the versatility of pins, shapes, opening methods, etc. for different types of power supply units; and by designing the type of source supply unit corresponding The output voltage of the power conversion module, the working status of the first voltage conversion circuit, and the detection rules of the detection controller realize the electrical foolproofing of the power supply unit and avoid damage to back-end components caused by high-voltage power supply caused by user errors.

Description

A power supply unit and server power supply system

Technical field

The present application relates to the field of power supply technology, and in particular to a power supply unit and a server power supply system.

Background technique

With the development of autonomous driving, artificial intelligence, big data and cloud computing applications, the computing power requirements of data centers are also getting higher and higher. On servers with massively increased computing power, in addition to the traditional Central Processing Unit (CPU), memory, hard disk and other modules, the units that need power supply also include the Graphics Processor/OCP Association Acceleration Module (Graphic Processing Unit). Processing Unit, GPU/OCP Accelerator Module, OAM) module. Due to its large power consumption, in order to improve energy utilization and reduce transmission losses, a 54V power supply unit (PSU) is currently generally used, which is a voltage conversion used to convert the input mains power into 54V DC. unit provides power. In addition to the 54V power supply unit in the system, the power supply for the CPU/memory and other parts of the server is provided by the 12V power supply unit (that is, the voltage conversion unit used to convert the input mains power into 12V DC) for voltage conversion. This brings about the application problem of 54V power supply unit and 12V power supply unit on the same server.

When designing the system, the traditional method uses a 54V to 12V voltage conversion module to first convert the 54V DC power into 12V DC power, and then convert the 12V DC power into other required components in the system through a voltage regulator (Voltage Regulator, VR). voltage value, while high-power devices such as GPUs are directly powered by the 54V power supply unit. Since the 54V to 12V voltage conversion module is currently incompatible among various manufacturers, this solution has problems of poor supply and high cost.

In addition, there are also solutions to make different power boards and select power supply units with different output voltages to provide 54V DC and 12V DC respectively to avoid the problems of poor versatility and cost of the 54V to 12V voltage conversion module. There are usually two design options available in this situation. The first solution is to use completely different interfaces for the 54V power supply unit and the 12V power supply unit, including the output pin definition, form size, opening method, etc. However, the power supply unit provided by this type of solution can only be used for projects. Dedicated, which is not conducive to the versatility of the power supply unit; in addition, during system design, due to the different peripheral designs of different power supply units, the consistency of the system design cannot be guaranteed; at the same time, during factory testing of the power supply unit, the 54V power supply The supply unit and the 12V power supply unit cannot share the same test production line, which increases production costs and is disadvantageous in terms of later maintenance and overall cost control of the power supply unit. The second solution is to use the same pin definition for the 54V power supply unit and the 12V power supply unit, and then make a fool-proof design in the shape (structure). Although it can solve the problem of poor versatility of the first solution, However, during the R&D process and system board production, if there is no chassis (shape, structure) to prevent fool-proofing, there will still be a risk of connecting the 54V power supply unit and the 12V power supply unit to the wrong location.

If the 54V power supply unit is mistakenly connected to the 12V power supply unit, the devices on the original 12V power supply link will be broken down by high voltage, causing the system to short-circuit and burn the board.

Providing a multi-type power supply solution that is both versatile and electrically fool-proof is a technical problem that those skilled in the art need to solve.

Contents of the invention

The purpose of this application is to provide a power supply unit and a server power supply system, which are used to realize the versatility of different types of power supply units and to achieve electrical foolproofing against incorrect connection of the power supply unit.

In order to solve the above technical problems, the present application provides a power supply unit, including: a power supply body, a power conversion module, a detection controller and a first voltage conversion circuit located inside the power supply body, and a External power input pin, power output pin, auxiliary detection pin and detection receiving pin;

Wherein, the power conversion module is located between the power input pin and the power output pin, and is used to convert the input mains power into a DC voltage output corresponding to the type of the power supply unit where it is located. The power conversion module The controlled end of the module is connected to the first control end of the detection controller; the first voltage conversion circuit is provided between the output end of the power conversion module and the auxiliary detection pin, and the third The controlled end of a voltage conversion circuit is connected to the second control end of the detection controller; the signal input end of the detection controller is connected to the detection receiving pin;

The auxiliary detection pin and/or the detection receiving pin are used to connect with the auxiliary detection circuit provided on the server board after the power supply unit is connected to the power connector;

The detection controller is configured to turn off the output of the power conversion module when the detection voltage value at the detection pin meets the power misconnection threshold range of the corresponding type of the power supply unit.

Optionally, it also includes a second voltage conversion circuit and a third voltage dividing resistor located inside the power supply body;

The second voltage conversion circuit is disposed between the output end of the power conversion module and the first end of the third voltage dividing resistor for converting the output voltage of the power conversion module into a first voltage. ;The second end of the third voltage dividing resistor is connected to the signal input end of the detection controller;

Correspondingly, the auxiliary detection circuit corresponding to the 12V power supply unit includes a first voltage dividing resistor and a second voltage dividing resistor, and the first end of the first voltage dividing resistor is used to connect the auxiliary detection pin, so The second end of the first voltage dividing resistor is connected to the first end of the second voltage dividing resistor and used to connect the detection receiving pin, and the second end of the second voltage dividing resistor is connected to ground;

If the power supply unit is the 12V power supply unit, the detection controller turns off the output of the first voltage conversion circuit; if the power supply unit is a 54V power supply unit, the detection controller The first voltage conversion circuit is controlled to output a second voltage.

Optionally, the auxiliary detection circuit corresponding to the 54V power supply unit includes a first programmable controller and a first switch;

The power supply end of the first programmable controller is connected to the output end of the voltage regulator, and the input end of the voltage regulator is used to connect the power output pin of the 12V power supply unit. The first control end of the programming controller is connected to the controlled end of the first switch. The first end of the first switch is used to connect the detection receiving pin of the 54V power supply unit. The first The second terminal of the switch is connected to ground;

The first programmable controller is used to control the first switch to turn on after being powered on.

Optionally, the power supply misconnection threshold range corresponding to the 12V power supply unit and the power supply misconnection threshold range corresponding to the 54V power supply unit are specifically greater than the voltage misconnection threshold;

The voltage connection error threshold meets the following conditions:

V1×R2/(R2+R3)<V0<(R1×R2×V1+R2×R3×V2)/(R1×R3+R2×R3+R1×R2);

Wherein, V0 is the voltage connection error threshold, V1 is the voltage value of the first voltage, V2 is the voltage value of the second voltage, R1 is the resistance of the first voltage dividing resistor, and R2 is the voltage value of the first voltage. The resistance of the second voltage dividing resistor, R3 is the resistance of the third voltage dividing resistor.

Optionally, it also includes an alarm connected to the detection controller;

The detection controller is also configured to control the alarm to alarm when the detection voltage value at the detection pin meets the power supply misconnection threshold range of the corresponding type of the power supply unit.

In order to solve the above technical problems, this application also provides a server power supply system, including a power supply unit and an auxiliary detection circuit provided on the server board;

Wherein, the power supply unit includes a power supply body, a power conversion module, a detection controller and a first voltage conversion circuit located inside the power supply body, as well as power input pins and power output external to the power supply body. pin, auxiliary detection pin and detection receiving pin;

The power conversion module is located between the power input pin and the power output pin, and is used to convert the input mains power into a DC voltage output corresponding to the type of the power supply unit where it is located. The power conversion module The controlled terminal is connected to the first control terminal of the detection controller; the first voltage conversion circuit is provided between the output terminal of the power conversion module and the auxiliary detection pin, and the first voltage The controlled end of the conversion circuit is connected to the second control end of the detection controller; the signal input end of the detection controller is connected to the detection receiving pin;

The auxiliary detection circuit is provided on the server board. After the power supply unit is connected to the power connector, the auxiliary detection pin and/or the detection receiving pin are connected to the auxiliary detection circuit;

The detection controller is configured to turn off the output of the power conversion module when the detection voltage value at the detection pin meets the power misconnection threshold range of the corresponding type of the power supply unit.

Optionally, the power supply unit further includes a second voltage conversion circuit and a third voltage dividing resistor located inside the power supply body;

The second voltage conversion circuit is disposed between the output end of the power conversion module and the first end of the third voltage dividing resistor for converting the output voltage of the power conversion module into a first voltage. ;The second end of the third voltage dividing resistor is connected to the signal input end of the detection controller;

Correspondingly, the auxiliary detection circuit corresponding to the 12V power supply unit includes a first voltage dividing resistor and a second voltage dividing resistor, and the first end of the first voltage dividing resistor is used to connect the auxiliary detection pin, so The second end of the first voltage dividing resistor is connected to the first end of the second voltage dividing resistor and used to connect the detection receiving pin, and the second end of the second voltage dividing resistor is connected to ground;

If the power supply unit is the 12V power supply unit, the detection controller turns off the output of the first voltage conversion circuit; if the power supply unit is a 54V power supply unit, the detection controller The first voltage conversion circuit is controlled to output a second voltage.

Optionally, the auxiliary detection circuit corresponding to the 54V power supply unit includes a first programmable controller and a first switch;

The power supply end of the first programmable controller is connected to the output end of the voltage regulator, and the input end of the voltage regulator is used to connect the power output pin of the 12V power supply unit. The first control end of the programming controller is connected to the controlled end of the first switch. The first end of the first switch is used to connect the detection receiving pin of the 54V power supply unit. The first The second terminal of the switch is connected to ground;

The first programmable controller is used to control the first switch to turn on after being powered on.

Optionally, the power supply misconnection threshold range corresponding to the 12V power supply unit and the power supply misconnection threshold range corresponding to the 54V power supply unit are specifically greater than the voltage misconnection threshold;

The voltage connection error threshold meets the following conditions:

V1×R2/(R2+R3)<V0<(R1×R2×V1+R2×R3×V2)/(R1×R3+R2×R3+R1×R2);

Wherein, V0 is the voltage connection error threshold, V1 is the voltage value of the first voltage, V2 is the voltage value of the second voltage, R1 is the resistance of the first voltage dividing resistor, and R2 is the voltage value of the first voltage. The resistance of the second voltage dividing resistor, R3 is the resistance of the third voltage dividing resistor.

Optionally, the first switch corresponds to the power connector corresponding to the 54V power supply unit;

The first programmable controller is also used to control the first switch of the corresponding 54V power supply unit to be turned on or off according to a command from the host.

Optionally, it also includes an alarm connected to the detection controller;

The detection controller is also configured to control the alarm to alarm when the detection voltage value at the detection pin meets the power supply misconnection threshold range of the corresponding type of the power supply unit.

Optionally, it also includes: a second programmable controller and a second switch corresponding to the 12V power supply unit provided on the server board;

Wherein, the power supply end of the second programmable controller is connected to the output end of the voltage regulator, and the input end of the voltage regulator is used to connect the power output pin of the 12V power supply unit, and the third The first control end of the two programmable controllers is connected to the controlled end of the second switch. The second switch is provided in the auxiliary detection circuit corresponding to the 12V power supply unit, and the second switch is connected to the controlled end of the second switch. The power connectors corresponding to the 12V power supply unit correspond one to one;

The second programmable controller is used to control the second switch of the corresponding 12V power supply unit to be turned on or off according to a command from the host.

The power supply unit provided by this application has an external structure including a power supply body and a power input pin, a power output pin, an auxiliary detection pin and a detection receiving pin located outside the power supply body, and an internal structure including a power supply unit located outside the power supply body. a power conversion module between the power input pin and the power output pin, a first voltage conversion circuit disposed between the output end of the power conversion module and the auxiliary detection pin, and a first voltage conversion circuit for controlling the power conversion module and the first The detection controller of the voltage conversion circuit realizes the versatility of pins, shapes, opening methods, etc. for different types of power supply units; and by designing the output voltage of the power conversion module, the working status of the first voltage conversion circuit, and the detection The way the controller determines whether the voltage at the detection receiving pin meets the power supply misconnection threshold range corresponds to the type of power supply unit, realizing electrical foolproofing of the power supply unit, that is, when the user connects the wrong power supply unit, the power supply The unit will not work to avoid causing system failure.

This application also provides a server power supply system, which has the above beneficial effects, which will not be described again here.

Description of drawings

In order to more clearly explain the embodiments of the present application or the technical solutions of the prior art, the following will briefly introduce the drawings needed to describe the embodiments or the prior art. Obviously, the drawings in the following description are only For some embodiments of the present application, those of ordinary skill in the art can also obtain other drawings based on these drawings without exerting creative efforts.

Figure 1 is a circuit diagram of a power supply unit provided by an embodiment of the present application;

Figure 2 is a circuit diagram of a server power supply system provided by an embodiment of the present application;

Figure 3 is an equivalent circuit diagram when a 12V power supply unit is correctly connected according to an embodiment of the present application;

Figure 4 is a schematic diagram of an equivalent circuit when a 54V power supply unit is incorrectly connected according to an embodiment of the present application;

Figure 5 is an equivalent circuit diagram when the power-on timing is wrong provided by an embodiment of the present application;

Figure 6 is a power board power-on sequence diagram provided by an embodiment of the present application;

FIG. 7 is a control schematic diagram of a multi-power supply unit on a power board provided by an embodiment of the present application.

Detailed ways

The core of this application is to provide a power supply unit and a server power supply system, which are used to realize the versatility of different types of power supply units and to realize electrical foolproofing to prevent wrong connection of the power supply unit.

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of this application.

Embodiment 1

FIG. 1 is a circuit diagram of a power supply unit provided by an embodiment of the present application; FIG. 2 is a circuit diagram of a server power supply system provided by an embodiment of the present application.

As shown in Figure 1, the power supply unit provided by the embodiment of the present application includes: a power supply body, a power conversion module M located inside the power supply body, a detection controller U1 and a first voltage conversion circuit (not shown in Figure 1, Located between the power conversion module M and the endpoint marked V2), as well as the power input pin Vin, power output pin Vout, auxiliary detection pin A and detection receiving pin B that appear outside the power supply body;

Among them, the power conversion module M is located between the power input pin Vin and the power output pin Vout, and is used to convert the input mains power into a DC voltage output corresponding to the type of the power supply unit. The power conversion module M is The control end is connected to the first control end of the detection controller U1; the first voltage conversion circuit is located between the output end of the power conversion module M and the auxiliary detection pin A, and the controlled end of the first voltage conversion circuit is connected to the detection control end. The second control terminal of the controller U1 is connected; the signal input terminal of the detection controller U1 is connected to the detection receiving pin B;

The auxiliary detection pin A and/or the detection receiving pin B are used to connect to the auxiliary detection circuit provided on the server board after the power supply unit is connected to the power connector;

The detection controller U1 is used to turn off the output of the power conversion module M when the detection voltage value at the detection pin meets the power misconnection threshold range of the corresponding type of power supply unit.

It should be noted that, as explained in the background technology section of this application, common power supply units in servers are divided into two types in terms of output voltage: 12V power supply unit (also called P12V PSU) and 54V power supply unit (also called P54VPSU). kind. However, the solutions provided by the embodiments of this application can also be applied to more types of power supply units.

In a specific implementation, in terms of universal design, the power supply unit provided by the embodiment of the present application includes a power supply body and a power input pin Vin, a power output pin Vout, and an auxiliary detection pin located outside the power supply body. Pin A and detection receiving pin B, the internal structure includes a power conversion module M located between the power input pin Vin and the power output pin Vout, an output terminal and an auxiliary detection pin located in the power conversion module M The first voltage conversion circuit between pins A and the detection controller U1 used to control the power conversion module M and the first voltage conversion circuit realize common pins, shapes, opening methods, etc. for different types of power supply units. flexibility, that is, different types of power supply units can use the same peripheral design, share the same set of test production lines, and use the same structure of test fixtures, which effectively solves the system supply problem, has factory test consistency, and reduces production costs. and application costs.

Among them, the power input pin Vin is used to connect to the AC power supply (usually commercial power), and the power output pin Vout, the auxiliary detection pin A and the detection receiving pin B are respectively connected to the corresponding pins on the power connector. Correspondingly, in the design of power connectors, the power connectors corresponding to different types of power supply units can be designed with the same pin arrangement to achieve pin consistency. Depending on actual design needs, some pins on the power connector can be left vacant.

Optionally, the power supply unit provided by the embodiment of the present application can also be designed with a mechanism anti-fooling device, that is, different structural components can be provided at the position where the power supply body is used to contact the power connector of the chassis. For example, the power supply body of the 54V power supply unit is equipped with a protruding structure, but the 12V power supply unit is not; the position of the power connector P54V PSU Conn corresponding to the 54V power supply unit is designed to snap into place with the protruding structure of the 54V power supply unit. groove, while the power connector P12V PSU Conn corresponding to the 12V power supply unit does not have such a groove, so that the 54V power supply unit cannot be inserted into the power connector corresponding to the 12V power supply unit. Of course, if there is no above-mentioned electrical anti-fooling solution provided by the embodiments of the present application and only this kind of mechanism is designed to be anti-fooling, since there is no chassis when testing the server board, it is still unavoidable that the power supply unit continues to work after a wrong connection.

Therefore, the power supply unit provided by the embodiment of the present application is designed with an electrical anti-fooling solution, specifically by designing the output voltage of the power conversion module M corresponding to the type of the power supply unit, the working status of the first voltage conversion circuit, and the detection controller U1 to detect the power supply The detection rules for incorrect connection realize the electrical distinction between different types of power supply units, so that after the power supply unit is connected to the power connector, the auxiliary detection pin A and the detection receiving pin B of the power supply unit correspond to each other respectively. Connected to the power connector, it is connected with the auxiliary detection circuit provided on the server board to form different auxiliary detection loops, so that the detection controller U1 of the power supply unit can detect the voltage value from the detection receiving pin B and the preset The deployed detection rules obtain the detection results of whether the power supply is connected incorrectly, and control the working status of the power conversion module M based on the detection results to avoid accidents due to power supply results and achieve electrical foolproofing of the power supply unit.

Specifically, in different types of power supply units, the three designs of the output voltage of the power conversion module M, the working state of the first voltage conversion circuit, and the detection rules of the detection controller U1 to detect whether the power supply is connected incorrectly can be different. It can also be designed to use the same detection rules for different types of power supply units, but the design conditions of the working states of the first voltage conversion circuits of different types of power supply units are different. In summary, the detection rules of the detection controller U1 need to be based on the design of the output voltage of the power conversion module M and the design of the working state of the first voltage conversion circuit, as well as the auxiliary detection of the position of the power connector that may be wrongly connected. The structure of the circuit is set. The auxiliary detection circuits corresponding to different types of power supply units can be the same, so that the power supply units use different output voltages of the power conversion module M and/or the working status and/or detection rules of the first voltage conversion circuit to distinguish them. As shown in Figure 2, the auxiliary detection circuits corresponding to different types of power supply units can also be different. Figure 2 shows the pins designed to connect to the auxiliary detection pin A of the power connector P54V PSU Conn corresponding to the 54V power supply unit. That is, it is vacant.

In actual applications, if the 54V power supply unit is mistakenly connected to the P12V PSU Conn corresponding to the 12V power supply unit and outputs voltage, it will obviously cause great damage to the back-end circuit. If the 12V power supply unit is mistakenly connected to the power connector corresponding to the 54V power supply unit P54V PSU Conn and outputs voltage, it will usually not cause damage to the back-end circuit, but will only cause the back-end circuit to not receive sufficient power supply voltage. can not work. Therefore, the detection rules of the detection controller U1 can be designed only for the case where the 54V power supply unit is incorrectly connected to the power connector P12V PSU Conn corresponding to the 12V power supply unit.

Embodiment 2

Figure 3 is an equivalent circuit diagram of a 12V power supply unit provided by an embodiment of the present application when it is correctly connected; Figure 4 is a schematic equivalent circuit diagram of a 54V power supply unit provided by an embodiment of the present application when it is incorrectly connected.

Based on the above embodiments, embodiments of the present application further provide a solution that can avoid the output voltage of the 54V power supply unit when the 54V power supply unit is mistakenly connected to the power connector corresponding to the 12V power supply unit.

As shown in Figures 1 and 2, the power supply unit provided by the embodiment of the present application also includes a second voltage conversion circuit and a third voltage dividing resistor located inside the power supply body;

The second voltage conversion circuit is disposed between the output end of the power conversion module M and the first end of the third voltage dividing resistor, and is used to convert the output voltage of the power conversion module M into the first voltage V1; the third voltage dividing circuit The second end of the resistor is connected to the signal input end of the detection controller U1;

Correspondingly, the auxiliary detection circuit corresponding to the 12V power supply unit includes a first voltage dividing resistor and a second voltage dividing resistor. The first end of the first voltage dividing resistor is used to connect the auxiliary detection pin A, and the first voltage dividing resistor is connected to the auxiliary detection pin A. The second end is connected to the first end of the second voltage dividing resistor and is used to connect the detection receiving pin B, and the second end of the second voltage dividing resistor is connected to ground;

If the power supply unit is a 12V power supply unit, the detection controller U1 turns off the output of the first voltage conversion circuit; if the power supply unit is a 54V power supply unit, the detection controller U1 controls the first voltage conversion circuit to output the second voltage. V2.

The power supply unit provided in the embodiment of the present application is based on the first embodiment of the present application. In addition to the different output voltages of the power conversion module M, the 54V power supply unit and the 12V power supply unit correspond to different working states of the first voltage conversion circuit. That is, the 54V power supply unit is under the control of its detection controller U1, and its auxiliary detection pin A receives the second voltage V2 converted by the first voltage conversion circuit; while the 12V power supply unit is under the control of its detection controller U1 , the first voltage conversion circuit has no output, that is, the auxiliary detection pin A has no output. The 54V power supply unit and the 12V power supply unit correspond to the same second voltage conversion circuit and the third voltage dividing resistor, that is, the first voltage V1 is provided to the first end of the third resistor through the second voltage conversion circuit.

Combined with the design of the auxiliary detection circuit corresponding to the 12V power supply unit provided by the embodiment of this application, the following control effects can be achieved:

Assume that the first voltage V1 is defined as the commonly used 3.3V and the second voltage V2 is 12V. The detection rule of the detection controller U1 is designed to prohibit the power conversion module M when the voltage Vf at the self-detection receiving pin B is greater than 1.1V. output, otherwise it can be output normally.

When the 12V power supply unit is correctly connected to the power connector P12V PSUConn corresponding to the 12V power supply unit, its equivalent circuit is shown in Figure 3. Assume that the resistance of the third resistor is the commonly used 4.7KΩ and the resistance of the second voltage dividing resistor is 1KΩ. At this time, Vf is V1×R2/(R2+R3)≈0.58V<1.1V. At this time, the detection controller Under the control of U1, the power output pin Vout of the 12V power supply unit can output normally.

When the 54V power supply unit is incorrectly connected to the power connector P12V PSUConn corresponding to the 12V power supply unit, the equivalent circuit is shown in Figure 4. Assuming that the resistance of the first voltage dividing resistor is 9.4KΩ, there is the equation (V2-Vf)/R1+(V1-Vf)/R3=Vf/R2. Then Vf≈1.5V>1.1V at this time. At this time, under the control of the detection controller U1, the power output pin Vout of the 54V power supply unit has no output.

It should be noted that the above circuit parameters are only examples. In actual applications, other circuit parameter combinations and corresponding detection rules can be designed.

Embodiment 3

FIG. 5 is an equivalent circuit diagram when the power-on timing is wrong according to an embodiment of the present application; FIG. 6 is a power-on timing diagram of a power board provided by an embodiment of the present application.

Since the first powered component on a server motherboard is usually a programmable controller, usually a Complex Programmable Logic Device (CPLD), the power supply voltage required by the programmable controller usually requires the output of a 12V power supply unit. The voltage is obtained after conversion. Based on this universal power-on sequence, based on Embodiment 2 of the present application, in this embodiment of the present application, an auxiliary detection circuit corresponding to the 54V power supply unit can be further designed to include a first programmable controller and a first switch;

The power supply terminal of the first programmable controller is connected to the output terminal of the voltage regulator. The input terminal of the voltage regulator is used to connect the power output pin Vout of the 12V power supply unit. The first control terminal of the first programmable controller is connected to the output terminal of the voltage regulator. The controlled end of the first switch is connected, the first end of the first switch is used to connect the detection receiving pin B of the 54V power supply unit, and the second end of the first switch is connected to ground;

The first programmable controller is used to control the first switch to conduct after power-on.

It should be noted that the third embodiment of the present application is based on the second embodiment of the present application and only adds further description of the auxiliary detection circuit corresponding to the 54V power supply unit. In terms of the structure and control scheme of the power supply unit, It is the same as Embodiment 2 of this application.

Based on the power supply unit provided in the second embodiment of the present application, combined with the auxiliary detection circuit corresponding to the 12V power supply unit provided in the second embodiment of the present application, and the auxiliary detection circuit corresponding to the 54V power supply unit provided in the third embodiment of the present application. In addition to the two application scenarios described in Embodiment 2 of this application, the detection circuit also includes the following scenarios:

When the power connector P12V PSU Conn corresponding to the 12V power supply unit has no power supply unit connected, and the 54V power supply unit or the 12V power supply unit is connected to the power connector P54VPSU Conn corresponding to the 54V power supply unit, as shown in Figure 5 As shown, at this time, the first programmable controller has no power source and is not working, and the first switch is in the off state. At this time, the voltage of Vf is the same as the first voltage V1, which is 3.3V>1.1V, and the power output pin Vout of the connected power supply unit has no output.

Only when the 12V power supply unit is connected to the corresponding power connector P12V PSU Conn, so that the first programmable controller is powered, the first programmable controller outputs the control signal PSU_CTRL to turn on the first switch. At this time, Vf When the voltage connected to GND is 0V<1.1V, the power output pin Vout of the power supply unit can output normally. At this time, if the 12V power supply unit is connected to the power connector P54V PSU Conn corresponding to the 54V power supply unit, it will not cause damage to the back-end circuit. There is no need to design a solution for the 12V power supply unit to self-check this situation. The user can The back-end circuit is not working to identify this misconnection situation.

In a specific implementation, as shown in Figure 2 or Figure 5, the first switch can be an NMOS tube, its gate is connected to the first control terminal of the first programmable controller, and its drain is used to connect to the 54V power supply unit. Detect receive pin B, source grounded. The first switch can also be other types of switches, which will not be described again here.

According to the design of Embodiment 3 of this application, the system can work normally only after the 12V power supply unit is connected to the correct power connector. The power-on sequence on the power board is shown in Figure 6. That is, after the 12V power supply unit P12V is powered on, P3V3 at the power supply end of the first programmable controller is powered on, and the first programmable controller is powered on and outputs the control signal PSU_CTRL to enable the first The switch is turned on. At this time, if the 54V power supply unit is connected to the correct power connector P54V PSU Conn, the 54V power supply unit P54V can be powered on.

The circuit parameters listed in Embodiment 2 of this application and Embodiment 3 of this application are all examples. In applications, the power supply misconnection threshold range corresponding to the 12V power supply unit and the power supply misconnection threshold range corresponding to the 54V power supply unit can both adopt a range larger than the voltage misconnection threshold;

The voltage connection error threshold set by detection controller U1 must meet the following conditions:

V1×R2/(R2+R3)<V0<(R1×R2×V1+R2×R3×V2)/(R1×R3+R2×R3+R1×R2);

Among them, V0 is the voltage connection error threshold, V1 is the voltage value of the first voltage, V2 is the voltage value of the second voltage, R1 is the resistance value of the first voltage dividing resistor, R2 is the resistance value of the second voltage dividing resistor, R3 is the resistance of the third voltage dividing resistor.

Embodiment 4

On the basis of the above embodiment, in order to enable the user to quickly learn about the incorrect connection of the power supply unit, the power supply unit provided by the embodiment of the present application may also include an alarm connected to the detection controller U1;

The detection controller U1 is also used to control the alarm to alarm when the detection voltage value at the detection pin meets the power supply misconnection threshold range of the corresponding type of power supply unit.

In specific implementation, the alarm can use an indicator light, a buzzer, a voice alarm, etc., and is installed inside or outside the power supply body. The power supply of the alarm comes from the output voltage of the power conversion module M after voltage conversion. The detection controller U1 can control whether the alarm is powered or not to control the working status of the detection controller U1.

Various embodiments corresponding to the power supply unit are described in detail above. On this basis, this application also discloses a server power supply system corresponding to the above power supply unit.

Embodiment 5

As shown in Figures 1 to 6, the server power supply system provided by the embodiment of the present application includes a power supply unit and an auxiliary detection circuit provided on the server board;

Among them, the power supply unit includes a power supply body, a power conversion module M located inside the power supply body, a detection controller U1 and a first voltage conversion circuit, as well as a power input pin Vin and a power output pin Vout that are external to the power supply body. , auxiliary detection pin A and detection receiving pin B;

The power conversion module M is located between the power input pin Vin and the power output pin Vout, and is used to convert the input mains power into a DC voltage output corresponding to the type of the power supply unit. The controlled terminal of the power conversion module M Connected to the first control terminal of the detection controller U1; the first voltage conversion circuit is provided between the output terminal of the power conversion module M and the auxiliary detection pin A, and the controlled terminal of the first voltage conversion circuit is connected to the detection controller U1 The second control terminal is connected; the signal input terminal of the detection controller U1 is connected to the detection receiving pin B;

The auxiliary detection circuit is located on the server board. After the power supply unit is connected to the power connector, the auxiliary detection pin A and/or the detection receiving pin B are connected to the auxiliary detection circuit;

The detection controller U1 is used to turn off the output of the power conversion module M when the detection voltage value at the detection pin meets the power misconnection threshold range of the corresponding type of power supply unit.

Further, the power supply unit also includes a second voltage conversion circuit and a third voltage dividing resistor located inside the power supply body;

The second voltage conversion circuit is disposed between the output end of the power conversion module M and the first end of the third voltage dividing resistor, and is used to convert the output voltage of the power conversion module M into the first voltage V1; the third voltage dividing circuit The second end of the resistor is connected to the signal input end of the detection controller U1;

Correspondingly, the auxiliary detection circuit corresponding to the 12V power supply unit includes a first voltage dividing resistor and a second voltage dividing resistor. The first end of the first voltage dividing resistor is used to connect the auxiliary detection pin A, and the first voltage dividing resistor is connected to the auxiliary detection pin A. The second end is connected to the first end of the second voltage dividing resistor and is used to connect the detection receiving pin B, and the second end of the second voltage dividing resistor is connected to ground;

If the power supply unit is a 12V power supply unit, the detection controller U1 turns off the output of the first voltage conversion circuit; if the power supply unit is a 54V power supply unit, the detection controller U1 controls the first voltage conversion circuit to output the second voltage. V2.

Further, the auxiliary detection circuit corresponding to the 54V power supply unit includes a first programmable controller and a first switch;

The power supply terminal of the first programmable controller is connected to the output terminal of the voltage regulator. The input terminal of the voltage regulator is used to connect the power output pin Vout of the 12V power supply unit. The first control terminal of the first programmable controller is connected to the output terminal of the voltage regulator. The controlled end of the first switch is connected, the first end of the first switch is used to connect the detection receiving pin B of the 54V power supply unit, and the second end of the first switch is connected to ground;

The first programmable controller is used to control the first switch to conduct after power-on.

Further, the power supply misconnection threshold range corresponding to the 12V power supply unit and the power supply misconnection threshold range corresponding to the 54V power supply unit are specifically greater than the voltage misconnection threshold;

The voltage connection error threshold meets the following conditions:

V1×R2/(R2+R3)<V0<(R1×R2×V1+R2×R3×V2)/(R1×R3+R2×R3+R1×R2);

Among them, V0 is the voltage connection error threshold, V1 is the voltage value of the first voltage, V2 is the voltage value of the second voltage, R1 is the resistance value of the first voltage dividing resistor, R2 is the resistance value of the second voltage dividing resistor, R3 is the resistance of the third voltage dividing resistor.

Further, the server power supply system provided by the embodiment of the present application may also include an alarm connected to the detection controller U1;

The detection controller U1 is also used to control the alarm to alarm when the detection voltage value at the detection pin meets the power supply misconnection threshold range of the corresponding type of power supply unit.

This part of the embodiment of the server power supply system corresponds to the embodiment of the power supply unit part. Please refer to the description of the embodiment of the power supply unit part, which will not be described again here.

Embodiment 6

FIG. 7 is a control schematic diagram of a multi-power supply unit on a power board provided by an embodiment of the present application.

On the power board of the server, in order to adapt to the different load requirements on the motherboard, multiple power supply units often need to be connected in parallel at the same time. Normally, when multiple 12V power supply units are connected in parallel, the power output pins Vout of each 12V power supply unit are combined into one output; when multiple 54V power supply units are connected in parallel, the power output pins Vout of each 54V power supply unit are combined. is one output.

Based on the fifth embodiment of the present application, in the server power supply system provided by the embodiment of the present application, it is possible to design a one-to-one correspondence between the first switch and the power connector P54V PSU Conn corresponding to the 54V power supply unit, and the first programmable controller It is also used to control the first switch of the corresponding 54V power supply unit to be turned on or off according to the command from the host.

Specifically, the host side calculates the input power required at the current moment based on the system load condition, calculates the number of 54V power supply units that need to be turned on, and inputs the first power supply through a two-wire serial bus (Inter-Integrated Circuit, I2C). The programmable controller causes the first programmable controller to output different PSU_CTRL (PSU_CTRL 1, PSU_CTRL 2...PSU_CTRL m) to the corresponding 54V power supply unit (P54V PSU Conn 1, P54VPSU Conn 2...P54V PSU Conn m) On or off.

Embodiment 7

On the basis of the above embodiments, in order to adapt to different load requirements on the motherboard, the server power supply system provided by the embodiments of the present application may also include: a second programmable controller provided on the server board corresponding to the 12V power supply unit; second switch;

Among them, the power supply terminal of the second programmable controller is connected to the output terminal of the voltage regulator, the input terminal of the voltage regulator is used to connect the power output pin Vout of the 12V power supply unit, and the first control terminal of the second programmable controller The terminal is connected to the controlled terminal of the second switch, the second switch is located in the auxiliary detection circuit corresponding to the 12V power supply unit, and the second switch corresponds one-to-one to the power connector P12V PSU Conn corresponding to the 12V power supply unit;

The second programmable controller is used to control the second switch of the corresponding 12V power supply unit to turn on or off according to the command from the host.

In a specific implementation, the second programmable controller may be the same programmable controller as the first programmable controller, or a different programmable controller may be used. After being powered on, the second programmable controller controls each 12V power supply unit to turn on or off according to the control command input by the host through the two-wire serial bus.

In the multi-power supply unit circuit as shown in FIG. 7 , the second switch may be provided on the branch where the second voltage dividing resistor is located, or on the branch where the first voltage dividing resistor is located.

The second switch can also be an NMOS tube, the gate of which is connected to the first control terminal of the first programmable controller. The second switch can also be other types of switches, which will not be described again here.

The power supply unit and server power supply system provided by this application have been introduced in detail above. Each embodiment in the specification is described in a progressive manner. Each embodiment focuses on its differences from other embodiments. The same and similar parts between the various embodiments can be referred to each other. It should be noted that for those of ordinary skill in the art, several improvements and modifications can be made to the present application without departing from the principles of the present application, and these improvements and modifications also fall within the protection scope of the claims of the present application.

It should also be noted that in this specification, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply that these entities or operations There is no such actual relationship or sequence between operations. Furthermore, the terms "comprises," "comprises," or any other variations thereof are intended to cover a non-exclusive inclusion such that a process, method, article, or apparatus that includes a list of elements includes not only those elements, but also those not expressly listed other elements, or elements inherent to the process, method, article or equipment. Without further limitation, an element defined by the statement "comprises a..." does not exclude the presence of additional identical elements in a process, method, article, or apparatus that includes the stated element.

Claims (12)

1. A power supply unit, comprising: the power supply body is arranged in the power supply body, comprises a power supply conversion module, a detection controller, a first voltage conversion circuit, a power supply input pin, a power supply output pin, an auxiliary detection pin and a detection receiving pin, wherein the power supply input pin, the power supply output pin, the auxiliary detection pin and the detection receiving pin are displayed outside the power supply body;

The power conversion module is arranged between the power input pin and the power output pin and is used for converting input commercial power into direct-current voltage output of the type corresponding to the power supply unit, and a controlled end of the power conversion module is connected with a first control end of the detection controller; the first voltage conversion circuit is arranged between the output end of the power conversion module and the auxiliary detection pin, and the controlled end of the first voltage conversion circuit is connected with the second control end of the detection controller; the signal input end of the detection controller is connected with the detection receiving pin;

the auxiliary detection pin and/or the detection receiving pin are/is used for being connected with an auxiliary detection circuit arranged on the server board card after the power supply unit is connected with the power connector;

the detection controller is used for closing the output of the power conversion module when the detection voltage value at the detection pin meets the power misconnection threshold range of the corresponding type of the power supply unit.

2. The power supply unit according to claim 1, further comprising a second voltage conversion circuit and a third voltage dividing resistor provided inside the power supply body;

The second voltage conversion circuit is arranged between the output end of the power conversion module and the first end of the third voltage dividing resistor and is used for converting the output voltage of the power conversion module into first voltage; the second end of the third voltage dividing resistor is connected with the signal input end of the detection controller;

correspondingly, the auxiliary detection circuit corresponding to the 12V power supply unit comprises a first voltage dividing resistor and a second voltage dividing resistor, wherein the first end of the first voltage dividing resistor is used for being connected with the auxiliary detection pin, the second end of the first voltage dividing resistor is connected with the first end of the second voltage dividing resistor and used for being connected with the detection receiving pin, and the second end of the second voltage dividing resistor is grounded;

if the power supply unit is the 12V power supply unit, the detection controller turns off the output of the first voltage conversion circuit; and if the power supply unit is a 54V power supply unit, the detection controller controls the first voltage conversion circuit to output a second voltage.

3. The power supply unit according to claim 2, wherein the auxiliary detection circuit corresponding to the 54V power supply unit includes a first programmable controller and a first switch;

The power supply end of the first programmable controller is connected with the output end of the voltage regulator, the input end of the voltage regulator is used for being connected with the power output pin of the 12V power supply unit, the first control end of the first programmable controller is connected with the controlled end of the first switch, the first end of the first switch is used for being connected with the detection receiving pin of the 54V power supply unit, and the second end of the first switch is grounded;

the first programmable controller is used for controlling the first switch to be conducted after power is supplied.

4. A power supply unit according to claim 3, wherein the power supply misconnection threshold range corresponding to the 12V power supply unit and the power supply misconnection threshold range corresponding to the 54V power supply unit are each specifically greater than a voltage misconnection threshold;

the voltage error connection threshold meets the following conditions:

V1×R2/(R2+R3)<V0<(R1×R2×V1+R2×R3×V2)/(R1×R3+R2×R3+R1×R2)；

wherein V0 is the voltage error threshold, V1 is the voltage value of the first voltage, V2 is the voltage value of the second voltage, R1 is the resistance value of the first voltage dividing resistor, R2 is the resistance value of the second voltage dividing resistor, and R3 is the resistance value of the third voltage dividing resistor.

5. The power supply unit of claim 1, further comprising an alarm connected to the detection controller;

the detection controller is also used for controlling the alarm to alarm when the detection voltage value at the detection pin meets the power supply misconnection threshold range of the corresponding type of the power supply unit.

6. The server power supply system is characterized by comprising a power supply unit and an auxiliary detection circuit arranged on a server board card;

the power supply unit comprises a power supply body, a power supply conversion module, a detection controller, a first voltage conversion circuit, a power supply input pin, a power supply output pin, an auxiliary detection pin and a detection receiving pin, wherein the power supply conversion module, the detection controller and the first voltage conversion circuit are arranged in the power supply body;

the power conversion module is arranged between the power input pin and the power output pin and is used for converting input commercial power into direct-current voltage output of the type corresponding to the power supply unit, and the controlled end of the power conversion module is connected with the first control end of the detection controller; the first voltage conversion circuit is arranged between the output end of the power conversion module and the auxiliary detection pin, and the controlled end of the first voltage conversion circuit is connected with the second control end of the detection controller; the signal input end of the detection controller is connected with the detection receiving pin;

The auxiliary detection circuit is arranged on the server board card, and the auxiliary detection pin and/or the detection receiving pin are/is connected with the auxiliary detection circuit after the power supply unit is connected with the power connector;

the detection controller is used for closing the output of the power conversion module when the detection voltage value at the detection pin meets the power misconnection threshold range of the corresponding type of the power supply unit.

7. The server power supply system according to claim 6, wherein the power supply unit further includes a second voltage conversion circuit and a third voltage dividing resistor provided inside the power supply body;

the second voltage conversion circuit is arranged between the output end of the power conversion module and the first end of the third voltage dividing resistor and is used for converting the output voltage of the power conversion module into first voltage; the second end of the third voltage dividing resistor is connected with the signal input end of the detection controller;

correspondingly, the auxiliary detection circuit corresponding to the 12V power supply unit comprises a first voltage dividing resistor and a second voltage dividing resistor, wherein the first end of the first voltage dividing resistor is used for being connected with the auxiliary detection pin, the second end of the first voltage dividing resistor is connected with the first end of the second voltage dividing resistor and used for being connected with the detection receiving pin, and the second end of the second voltage dividing resistor is grounded;

If the power supply unit is the 12V power supply unit, the detection controller turns off the output of the first voltage conversion circuit; and if the power supply unit is a 54V power supply unit, the detection controller controls the first voltage conversion circuit to output a second voltage.

8. The server power supply system according to claim 7, wherein the auxiliary detection circuit corresponding to the 54V power supply unit includes a first programmable controller and a first switch;

the power supply end of the first programmable controller is connected with the output end of the voltage regulator, the input end of the voltage regulator is used for being connected with the power output pin of the 12V power supply unit, the first control end of the first programmable controller is connected with the controlled end of the first switch, the first end of the first switch is used for being connected with the detection receiving pin of the 54V power supply unit, and the second end of the first switch is grounded;

the first programmable controller is used for controlling the first switch to be conducted after power is supplied.

9. The server power supply system according to claim 8, wherein the power supply misconnection threshold range corresponding to the 12V power supply unit and the power supply misconnection threshold range corresponding to the 54V power supply unit are each specifically greater than a voltage misconnection threshold;

The voltage error connection threshold meets the following conditions:

V1×R2/(R2+R3)<V0<(R1×R2×V1+R2×R3×V2)/(R1×R3+R2×R3+R1×R2)；

wherein V0 is the voltage error threshold, V1 is the voltage value of the first voltage, V2 is the voltage value of the second voltage, R1 is the resistance value of the first voltage dividing resistor, R2 is the resistance value of the second voltage dividing resistor, and R3 is the resistance value of the third voltage dividing resistor.

10. The server power supply system according to claim 8, wherein the first switches are in one-to-one correspondence with the power connectors to which the 54V power supply unit corresponds;

the first programmable controller is also used for controlling the first switch of the corresponding 54V power supply unit to be turned on or off according to the command of the host side.

11. The server power system of claim 6, further comprising an alarm coupled to the detection controller;

the detection controller is also used for controlling the alarm to alarm when the detection voltage value at the detection pin meets the power supply misconnection threshold range of the corresponding type of the power supply unit.

12. The server power supply system of claim 6, further comprising: the second programmable controller and the second switch are arranged on the server board card and correspond to the 12V power supply unit;

The power supply end of the second programmable controller is connected with the output end of the voltage regulator, the input end of the voltage regulator is used for being connected with the power output pin of the 12V power supply unit, the first control end of the second programmable controller is connected with the controlled end of the second switch, the second switch is arranged in an auxiliary detection circuit corresponding to the 12V power supply unit, and the second switch corresponds to the power connectors corresponding to the 12V power supply unit one by one;

the second programmable controller is used for controlling the second switch of the corresponding 12V power supply unit to be turned on or off according to the command of the host side.