Self-adaptive power supply system

Abstract

The invention discloses a self-adaptive power supply system, and relates to the technical field of power supply, and the system comprises a power supply connection unit which is used for connecting a power supply and outputting the voltage of the power supply; the first voltage conversion unit is used for performing voltage conversion on the voltage output by the power supply connection unit and supplying power to the control unit and the voltage identification unit; the second voltage conversion unit is used for converting the second voltage output by the power supply connection unit into the first voltage; the voltage identification unit is used for identifying the voltage output by the power supply connection unit and outputting a signal to the control unit; the control unit is used for controlling the switch unit to output the first voltage when the power supply connecting unit outputs the first voltage; when the power connection unit outputs the second voltage, the switch unit is controlled to output the second voltage and the first voltage converted by the second voltage conversion unit. According to the power supply system, one power supply mainboard can support different power supplies, the needed auxiliary power supply is provided for the PCIe card, resources are saved, and the power supply efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of power supply, and in particular to an adaptive power supply system. Background Art

[0002] As the power consumption of PCIe (peripheral component interconnect express, a high-speed serial computer expansion bus standard) cards increases, most PCIe cards require an external auxiliary power supply, and usually some PCIe cards require a 12V auxiliary power supply, and some PCIe cards require a 48V auxiliary power supply. In response to this situation, the current power supply solution for providing auxiliary power is to separately design a power supply motherboard, and the power supply motherboard only supports the power supply to provide 12V power supply, or the power supply motherboard only supports the power supply to provide 48V power supply. However, separately designing the power supply motherboard will lead to a great waste of resources, and when the power supply changes, the power supply motherboard needs to be replaced, which increases the workload and reduces the power supply efficiency. Therefore, how to solve the above technical defects has become a technical problem that needs to be solved urgently by those skilled in the art. Summary of the invention

[0003] The purpose of the present invention is to provide an adaptive power supply system, which can realize that a power supply motherboard supports different power supplies, provides the required auxiliary power supply for the PCIe card, saves resources and improves power supply efficiency.

[0004] In order to solve the above technical problems, the present invention provides an adaptive power supply system, comprising:

[0005] A power connection unit, a first voltage conversion unit, a second voltage conversion unit, a voltage identification unit, a control unit, and a switch unit;

[0006] The power connection unit is used to connect a power source and output the voltage of the power source;

[0007] The first voltage conversion unit is used to convert the voltage output by the power connection unit to supply power to the control unit and the voltage identification unit;

[0008] The second voltage conversion unit is used to convert the second voltage output by the power connection unit into a first voltage;

[0009] The voltage identification unit is used to identify the voltage output by the power connection unit and output a signal representing the voltage output by the power connection unit to the control unit;

[0010] The control unit is used to control the switch unit to output the first voltage when the power connection unit outputs the first voltage; and to control the switch unit to output the second voltage and the first voltage converted by the second voltage conversion unit when the power connection unit outputs the second voltage.

[0011] In some embodiments, the switch unit comprises:

[0012] a first switch unit, a second switch unit, and a third switch unit; the first switch unit is respectively connected to the power connection unit and the control unit; the second switch unit is respectively connected to the power connection unit and the control unit; the third switch unit is respectively connected to the second voltage conversion unit and the control unit;

[0013] The first switch unit is used to output the voltage output by the power connection unit when the first switch unit is turned on;

[0014] The second switch unit is used to output the voltage output by the power connection unit when the second switch unit is turned on;

[0015] The third switch unit is used to output the voltage output by the second voltage conversion unit when the third switch unit is turned on.

[0016] In some embodiments, the control unit is specifically configured to:

[0017] When the power connection unit outputs a first voltage, the first switch unit and the second switch unit are controlled to be turned on; when the power connection unit outputs a second voltage, the first switch unit and the third switch unit are controlled to be turned on.

[0018] In some embodiments, the first switch unit, the second switch unit and the third switch unit each include:

[0019] a first transistor, a second transistor, a third transistor, a first resistor, a second resistor, a third resistor and a capacitor; the first end of the first transistor serves as a control signal input end, the second end of the first transistor is grounded, the third end of the first transistor is connected to the first end of the first resistor, the first end of the second resistor, the first end of the third resistor and the first end of the capacitor, the second end of the first resistor is connected to the second end of the second transistor and serves as a voltage input end, the second end of the second resistor is connected to the first end of the second transistor, the second end of the third resistor is connected to the first end of the third transistor, the second end of the capacitor is connected to the second end of the first transistor, the third end of the second transistor is connected to the third end of the third transistor, and the second end of the third transistor serves as a voltage output end;

[0020] When the control signal input terminal inputs a first control signal, the first transistor, the second transistor and the third transistor are turned on, and the voltage output terminal outputs the voltage of the voltage input terminal;

[0021] When the control signal input terminal inputs a second control signal, the first transistor, the second transistor, and the third transistor are turned off, and the voltage output terminal does not output the voltage of the voltage input terminal.

[0022] In some embodiments, the voltage identification unit includes:

[0023] A comparator, a fourth resistor, a fifth resistor and a sixth resistor; the first end of the fourth resistor is connected to the power connection unit as an input end of a voltage identification unit, the second end of the fourth resistor is connected to the first end of the fifth resistor, the second end of the fifth resistor is grounded, the inverting input end of the comparator is connected to an end of the fourth resistor connected to the fifth resistor, the non-inverting input end of the comparator is connected to the output end of the first voltage conversion unit, the output end of the comparator is connected to the control unit as the output end of the voltage identification unit, the first end of the sixth resistor is connected to the output end of the comparator, and the second end of the sixth resistor is connected to the output end of the first voltage conversion unit.

[0024] In some embodiments, it also includes:

[0025] The electronic fuse is used to connect the switch unit with the power connection unit and / or connect the second voltage conversion unit with the power connection unit when the electronic fuse is turned on.

[0026] In some embodiments, the control unit is further configured to:

[0027] Controlling the electronic fuse to be turned on or off.

[0028] In some embodiments, the electronic fuse comprises:

[0029] A first electronic fuse and a second electronic fuse; the first electronic fuse is respectively connected to the power connection unit, the first switch unit, the second switch unit and the control unit, and the second electronic fuse is respectively connected to the power connection unit, the second voltage conversion unit and the control unit;

[0030] The first electronic fuse is used to connect the first switch unit to the power connection unit and the second switch unit to the power connection unit when the first electronic fuse is turned on;

[0031] The second electronic fuse is used to connect the second voltage conversion unit with the power connection unit when the second electronic fuse is turned on.

[0032] In some embodiments, the control unit is specifically configured to:

[0033] When the power connection unit outputs a first voltage, the first electronic fuse is controlled to be turned on; when the power connection unit outputs a second voltage, the first electronic fuse and the second electronic fuse are controlled to be turned on.

[0034] In some embodiments, the control unit is further configured to:

[0035] Read information of the first electronic fuse and / or the second electronic fuse; the information includes any one or more of current information, power consumption information, temperature information, and alarm information.

[0036] The adaptive power supply system provided by the present invention includes: a power connection unit, a first voltage conversion unit, a second voltage conversion unit, a voltage identification unit, a control unit, and a switch unit; the power connection unit is used to connect a power supply and output the voltage of the power supply; the first voltage conversion unit is used to convert the voltage output by the power connection unit to supply power to the control unit and the voltage identification unit; the second voltage conversion unit is used to convert the second voltage output by the power connection unit into a first voltage; the voltage identification unit is used to identify the magnitude of the voltage output by the power connection unit, and output a signal representing the magnitude of the voltage output by the power connection unit to the control unit; the control unit is used to control the switch unit when the power connection unit outputs the first voltage, so that the switch unit outputs the first voltage; when the power connection unit outputs the second voltage, control the switch unit so that the switch unit outputs the second voltage, and the switch unit outputs the first voltage converted by the second voltage conversion unit.

[0037] It can be seen that the adaptive power supply system provided by the present invention can identify the voltage output by the power connection unit through the voltage identification unit. When the voltage output by the power connection unit is the second voltage, the second voltage can be converted into the first voltage through the second voltage conversion unit. By controlling the switch unit through the control unit, the required output voltage of the adaptive power supply system can be controlled when the power supply is different. In this way, the adaptive power supply system setting can realize that the same power supply motherboard supports different power supplies. While being able to provide the required auxiliary power supply for the PCIe card, it can save resources, improve power supply efficiency, and facilitate management. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the prior art and the drawings required for use in the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0039] Figure 1 A schematic diagram of an adaptive power supply system provided by an embodiment of the present invention;

[0040] Figure 2 A schematic diagram of a voltage identification unit provided by an embodiment of the present invention;

[0041] Figure 3 A schematic diagram of a specific adaptive power supply system provided by an embodiment of the present invention;

[0042] Figure 4 A schematic diagram of a switch circuit provided by an embodiment of the present invention;

[0043] Figure 5 A schematic diagram of another specific adaptive power supply system provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0044] The core of the present invention is to provide an adaptive power supply system, which can realize that a power supply motherboard supports different power supplies, provides the required auxiliary power supply for the PCIe card, saves resources and improves power supply efficiency.

[0045] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0046] Please refer to Figure 1 , Figure 1 A schematic diagram of an adaptive power supply system provided by an embodiment of the present invention, referring to Figure 1 As shown, the power supply system includes:

[0047] A power connection unit 10, a first voltage conversion unit 20, a second voltage conversion unit 30, a voltage identification unit 40, a control unit 50, and a switch unit 60;

[0048] The power connection unit 10 is used to connect a power source and output the voltage of the power source;

[0049] The first voltage conversion unit 20 is used to convert the voltage output by the power connection unit 10 to supply power to the control unit 50 and the voltage identification unit 40;

[0050] The second voltage conversion unit 30 is used to convert the second voltage output by the power connection unit 10 into a first voltage;

[0051] The voltage identification unit 40 is used to identify the voltage output by the power connection unit 10 and output a signal representing the voltage output by the power connection unit 10 to the control unit 50;

[0052] The control unit 50 is used to control the switch unit 60 to output the first voltage when the power connection unit 10 outputs the first voltage; when the power connection unit 10 outputs the second voltage, control the switch unit 60 to output the second voltage and the first voltage converted by the second voltage conversion unit 30.

[0053] The adaptive power supply system provided in this embodiment is a power supply mainboard, which mainly includes a power connection unit 10, a first voltage conversion unit 20, a second voltage conversion unit 30, a voltage identification unit 40, a control unit 50, and a switch unit 60. The first voltage conversion unit 20 is respectively connected to the power connection unit 10 and the control unit 50, the second voltage conversion unit 30 is respectively connected to the power connection unit 10 and the switch unit 60, the voltage identification unit 40 is respectively connected to the power connection unit 10 and the control unit 50, and the switch unit 60 is also connected to the power connection unit 10.

[0054] The power connection unit 10 is used to connect a power source and output the voltage of the connected power source. The first voltage conversion unit 20 is a wide voltage input DC-DC converter, which is used to convert the voltage output by the power connection unit 10 into a voltage adapted to the control unit 50 and to supply power to the control unit 50. Usually, the power supply voltage of the control unit 50 is 3.3V, so the first voltage conversion unit 20 converts the voltage output by the power connection unit 10 into 3.3V to supply power to the control unit 50. Regardless of whether the voltage output by the power connection unit 10 is the first voltage or the second voltage, the first voltage conversion unit 20 can convert the voltage output by the power connection unit 10 into a voltage adapted to the control unit 50. The second voltage conversion unit 30 can be a power brick, which is used to convert the second voltage output by the power connection unit 10 into the first voltage.

[0055] The voltage identification unit 40 is used to identify the magnitude of the voltage output by the power connection unit 10, and output a signal indicating the magnitude of the voltage output by the power connection unit 10. If the power connection unit 10 outputs a first voltage, the voltage identification unit 40 outputs a signal indicating that the voltage output by the power connection unit 10 is the first voltage. If the power connection unit 10 outputs a second voltage, the voltage identification unit 40 outputs a signal indicating that the voltage output by the power connection unit 10 is the second voltage.

[0056] The second voltage is greater than the first voltage, the first voltage may be 12V, and the second voltage may be 48V. The voltage identification unit 40 is used to identify whether the voltage output by the power connection unit 10 is 12V or 48V. If the power connection unit 10 outputs 12V, the voltage identification unit 40 outputs a signal indicating that the voltage output by the power connection unit 10 is 12V. If the power connection unit 10 outputs 48V, the voltage identification unit 40 outputs a signal indicating that the voltage output by the power connection unit 10 is 48V.

[0057] refer to Figure 2 As shown, in some embodiments, the voltage identification unit 40 includes:

[0058] A comparator U1, a fourth resistor R4, a fifth resistor R5 and a sixth resistor R6; a first end of the fourth resistor R4 is connected to the power connection unit 10 as an input end of a voltage identification unit 40, a second end of the fourth resistor R4 is connected to a first end of the fifth resistor R5, a second end of the fifth resistor R5 is grounded, an inverting input end of the comparator U1 is connected to an end of the fourth resistor R4 connected to the fifth resistor R5, a non-inverting input end of the comparator U1 is connected to an output end of the first voltage conversion unit 20, an output end of the comparator U1 is connected to the control unit 50 as an output end of the voltage identification unit 40, a first end of the sixth resistor R6 is connected to the output end of the comparator U1, and a second end of the sixth resistor R6 is connected to the output end of the first voltage conversion unit 20.

[0059] In this embodiment, the voltage identification unit 40 includes a comparator U1 and three resistors. Figure 2PVIN represents the voltage of the input voltage identification unit 40. When the voltage output by the power connection unit 10 is the first voltage, the first voltage is divided by the fourth resistor R4 and the fifth resistor R5 and input to the inverting input terminal of the comparator U1. The voltage at the non-inverting input terminal of the comparator U1 is greater than the voltage at the inverting input terminal of the comparator U1, and the comparator U1 outputs a high level. When the voltage output by the power connection unit 10 is the second voltage, the second voltage is divided by the fourth resistor R4 and the fifth resistor R5 and input to the inverting input terminal of the comparator U1. The voltage at the non-inverting input terminal of the comparator U1 is less than the voltage at the inverting input terminal of the comparator U1, and the comparator U1 outputs a low level.

[0060] In the case where the first voltage is 12V and the second voltage is 48V, when the voltage output by the power connection unit 10 is 12V, 12V is divided by the fourth resistor R4 and the fifth resistor R5 and input to the inverting input terminal of the comparator U1. For example, after the fourth resistor R4 and the fifth resistor R5 divide the voltage, the divided voltage is 2V, and the divided voltage is input to the inverting input terminal of the comparator U1. The voltage (3.3V) at the positive input terminal of the comparator U1 is greater than the voltage at the inverting input terminal of the comparator U1, and the comparator U1 outputs a high level. When the voltage output by the power connection unit 10 is 48V, 48V is divided by the fourth resistor R4 and the fifth resistor R5 and input to the inverting input terminal of the comparator U1. For example, after the fourth resistor R4 and the fifth resistor R5 divide the voltage, the divided voltage is 8V, and the divided voltage is input to the inverting input terminal of the comparator U1. The voltage at the positive input terminal of the comparator U1 is less than the voltage at the inverting input terminal of the comparator U1, and the comparator U1 outputs a low level.

[0061] It is clear that by setting the resistance values ​​of the fourth resistor R4 and the fifth resistor R5 , the voltage identification unit 40 can be used to identify 12 V and 48 V. By modifying the resistance values ​​of the fourth resistor R4 and the fifth resistor R5 , the voltage identification unit 40 can also be used to identify other voltages.

[0062] The control unit 50 may be a CPLD (Complex Programmable Logic Device), an MCU (Microcontroller Unit), etc. The control unit 50 is used to control the switch unit 60 so that the switch unit 60 outputs a voltage. Specifically, when the power connection unit 10 outputs a first voltage, the control unit 50 controls the switch unit 60 so that the switch unit 60 outputs the first voltage; when the power connection unit 10 outputs a second voltage, the control unit 50 controls the switch unit 60 so that the switch unit 60 outputs the second voltage, and the switch unit 60 outputs the first voltage converted by the second voltage conversion unit 30.

[0063] When the first voltage is 12V and the second voltage is 48V, when the power connection unit 10 outputs 12V, the control unit 50 controls the switch unit 60, so that the switch unit 60 can output 12V to PCIe CONN and PCIe Slot; PCIe CONN refers to the connector of the PCIe card, and PCIe Slot refers to the card slot of the PCIe card. When the power connection unit 10 outputs 48V, the control unit 50 controls the switch unit 60, so that the switch unit 60 can output 48V to PCIe CONN, and can output the 12V converted by the second voltage conversion unit 30 to PCIe Slot.

[0064] The switch unit 60 is controlled by the control unit 50 to output a voltage input to the switch unit 60 when turned on.

[0065] refer to Figure 3 As shown, in some embodiments, the switch unit 60 includes:

[0066] A first switch unit 601, a second switch unit 602, and a third switch unit 603; the first switch unit 601 is respectively connected to the power connection unit 10 and the control unit 50; the second switch unit 602 is respectively connected to the power connection unit 10 and the control unit 50; the third switch unit 603 is respectively connected to the second voltage conversion unit 30 and the control unit 50;

[0067] The first switch unit 601 is used to output the voltage output by the power connection unit 10 when the first switch unit 601 is turned on;

[0068] The second switch unit 602 is used to output the voltage output by the power connection unit 10 when the second switch unit 602 is turned on;

[0069] The third switch unit 603 is used to output the voltage output by the second voltage conversion unit 30 when the third switch unit 603 is turned on.

[0070] In this embodiment, the switch unit 60 includes three paths, which are respectively called the first switch unit 601, the second switch unit 602, and the third switch unit 603. The first switch unit 601 is respectively connected to the power connection unit 10 and the control unit 50. When the first switch unit 601 is turned on, the first switch unit 601 outputs the voltage output by the power connection unit 10. The second switch unit 602 is respectively connected to the power connection unit 10 and the control unit 50. When the second switch unit 602 is turned on, the second switch unit 602 outputs the voltage output by the power connection unit 10. The third switch unit 603 is respectively connected to the second voltage conversion unit 30 and the control unit 50. When the third switch unit 603 is turned on, the third switch unit 603 outputs the voltage output by the second voltage conversion unit 30.

[0071] Accordingly, in some embodiments, the control unit 50 is specifically used for:

[0072] When the power connection unit 10 outputs a first voltage, the first switch unit 601 and the second switch unit 602 are controlled to be turned on; when the power connection unit 10 outputs a second voltage, the first switch unit 601 and the third switch unit 603 are controlled to be turned on.

[0073] In the case where the first voltage is 12V and the second voltage is 48V, when the power connection unit 10 outputs 12V, the control unit 50 controls the first switch unit 601 and the second switch unit 602 to be turned on, so that the first switch unit 601 can output 12V to PCIe CONN, and the second switch unit 602 can output 12V to PCIe Slot, and at this time the third switch unit 603 is turned off. When the power connection unit 10 outputs 48V, the control unit 50 controls the first switch unit 601 and the third switch unit 603 to be turned on, so that the first switch unit 601 can output 48V to PCIe CONN, and the third switch unit 603 can output 12V converted by the second voltage conversion unit 30 to PCIe Slot, and at this time the second switch unit 602 is turned off.

[0074] refer to Figure 4 As shown, in some embodiments, the first switch unit 601, the second switch unit 602 and the third switch unit 603 all include:

[0075] a first transistor Q1, a second transistor Q2, a third transistor Q3, a first resistor R1, a second resistor R2, a third resistor R3 and a capacitor C; a first end of the first transistor Q1 is used as a control signal input end, a second end of the first transistor Q1 is grounded, a third end of the first transistor Q1 is connected to a first end of the first resistor R1, a first end of the second resistor R2, a first end of the third resistor R3 and a first end of the capacitor C, a second end of the first resistor R1 is connected to a second end of the second transistor Q2 and is used as a voltage input end, a second end of the second resistor R2 is connected to a first end of the second transistor Q2, a second end of the third resistor R3 is connected to a first end of the third transistor Q3, a second end of the capacitor C is connected to a second end of the first transistor Q1, a third end of the second transistor Q2 is connected to a third end of the third transistor Q3, and a second end of the third transistor Q3 is used as a voltage output end;

[0076] When the control signal input terminal inputs a first control signal, the first transistor Q1, the second transistor Q2 and the third transistor Q3 are turned on, and the voltage output terminal outputs the voltage of the voltage input terminal;

[0077] When the control signal input terminal inputs a second control signal, the first transistor Q1, the second transistor Q2 and the third transistor Q3 are turned off, and the voltage output terminal does not output the voltage of the voltage input terminal.

[0078] The first transistor Q1, the second transistor Q2 and the third transistor Q3 may be PMOS transistors, the first ends of the first transistor Q1, the second transistor Q2 and the third transistor Q3 are the gates of the PMOS transistors, the second ends of the first transistor Q1, the second transistor Q2 and the third transistor Q3 are the sources of the PMOS transistors, and the third ends of the first transistor Q1, the second transistor Q2 and the third transistor Q3 are the drains of the PMOS transistors. The gate of the first transistor Q1 is controlled by a control signal output by the control unit 50. The first control signal output by the control unit 50 may be a high level, and the second control signal may be a low level.

[0079] When the control unit 50 outputs a high level, the first transistor Q1 is turned on, the second transistor Q2 and the third transistor Q3 are turned on, and the voltage output terminal outputs the voltage of the voltage input terminal. When the control unit 50 outputs a low level, the first transistor Q1 is turned off, the second transistor Q2 and the third transistor Q3 are turned off, and the voltage output terminal does not output the voltage of the voltage input terminal.

[0080] In this embodiment, the second transistor Q2 and the third transistor Q3 are connected in the above manner, which can effectively prevent the body diode in the transistor from being turned on and leaking.

[0081] In some embodiments, it also includes:

[0082] The electronic fuse is used to connect the switch unit 60 with the power connection unit 10 and / or connect the second voltage conversion unit 30 with the power connection unit 10 when the electronic fuse is turned on.

[0083] Setting an electronic fuse can improve the power supply safety of the power supply system.

[0084] Accordingly, in some embodiments, the control unit 50 is further configured to:

[0085] Controlling the electronic fuse to be turned on or off.

[0086] Among them, reference Figure 5 As shown, in some embodiments, the electronic fuse includes:

[0087] A first electronic fuse and a second electronic fuse; the first electronic fuse is respectively connected to the power connection unit 10, the first switch unit 601, the second switch unit 602 and the control unit 50, and the second electronic fuse is respectively connected to the power connection unit 10, the second voltage conversion unit 30 and the control unit 50;

[0088] The first electronic fuse is used to connect the first switch unit 601 with the power connection unit 10 and connect the second switch unit 602 with the power connection unit 10 when the first electronic fuse is turned on;

[0089] The second electronic fuse is used to connect the second voltage conversion unit 30 with the power connection unit 10 when the second electronic fuse is turned on.

[0090] If the first electronic fuse is turned on, the first switch unit 601 and the second switch unit 602 are both connected to the power connection unit 10. If the second electronic fuse is turned on, the second voltage conversion unit 30 is connected to the power connection unit 10.

[0091] In this embodiment, two electronic fuses are provided. The first switch unit 601 and the second switch unit 602 are connected to the same electronic fuse, and the third switch unit 603 is connected to an electronic fuse. This can save resources while ensuring the power supply safety of the power supply system.

[0092] Accordingly, in some embodiments, the control unit 50 is specifically used for:

[0093] When the power connection unit 10 outputs a first voltage, the first electronic fuse is controlled to be turned on; when the power connection unit 10 outputs a second voltage, the first electronic fuse and the second electronic fuse are controlled to be turned on.

[0094] When the first voltage is 12V and the second voltage is 48V, when the power connection unit 10 outputs 12V, the control unit 50 controls the first electronic fuse to be turned on, so that the first switch unit 601 and the second switch unit 602 are both connected to the power connection unit 10. When the power connection unit 10 outputs 48V, the control unit 50 controls the first electronic fuse to be turned on with the second electronic fuse, so that the first switch unit 601 and the second switch unit 602 are both connected to the power connection unit 10, and the second voltage conversion unit 30 is connected to the power connection unit 10.

[0095] In some embodiments, the control unit 50 is further configured to:

[0096] Read information of the first electronic fuse and / or the second electronic fuse; the information includes any one or more of current information, power consumption information, temperature information, and alarm information.

[0097] The control unit 50 can read the information of the first electronic fuse and the second electronic fuse through Pmbus (Power Management Bus), and can also read the voltage value input by the power connection unit 10 .

[0098] In some embodiments, the control unit 50 is further used to: analyze the read information, and when an abnormality is analyzed, control the first electronic fuse and the second electronic fuse to be turned off, and control the first switch unit, the second switch unit and the third switch unit to be turned off.

[0099] The control unit 50 can further analyze the read information, and when an abnormality is analyzed, the first electronic fuse and the second electronic fuse can be controlled to be turned off, and the first switch unit 601, the second switch unit 602, and the third switch unit 603 can be controlled to be turned off, so as to ensure the safety of the power supply system. For example, when the control unit 50 finds that there is an abnormality such as overcurrent, excessive power consumption, and excessive temperature, the first electronic fuse and the second electronic fuse can be controlled to be turned off, and the first switch unit 601, the second switch unit 602, and the third switch unit 603 can be controlled to be turned off.

[0100] Combination Figure 5 As shown, the working principle of the adaptive power supply system can be as follows:

[0101] When the voltage of the input power connection unit 10 is 12V or 48V, the first voltage conversion unit 20 outputs 3.3V to power the control unit 50 and the voltage identification unit 40, and the control unit 50 and the voltage identification unit 40 start to work. When the power connection unit 10 outputs 12V, the voltage identification unit 40 outputs a high level, and when the power connection unit 10 outputs 48V, the voltage identification unit 40 outputs a low level. When the voltage identification unit 40 outputs a high level, the control unit 50 can infer that the input of the power connection unit 10 is 12V, then the control unit 50 outputs a control signal to control the first electronic fuse to be turned on, the second electronic fuse is closed by default, and the output voltage of the first electronic fuse is read through Pmbus as 12V, and the control unit 50 then outputs a control signal to control the first switch unit 601 and the second switch unit 602, and the third switch unit 603 is closed by default, thereby providing 12V voltage for PCIe Slot and PCIe CONN. When the voltage identification unit 40 outputs a low level, the control unit 50 can infer that the input of the power connection unit 10 is 48V, then the control unit 50 outputs a control signal to control the first electronic fuse and the second electronic fuse to be turned on, and reads the output voltage of the first electronic fuse and the second electronic fuse through Pmbus respectively, which is 48V. The control unit 50 then outputs a control signal to control the first switch unit 601 and the third switch unit 603 to be turned on, and the second switch unit 602 is closed by default, thereby providing a 12V voltage for the PCIe Slot and a 48V voltage for the PCIe CONN.

[0102] The adaptive power supply motherboard in the present invention is adapted to the power supply with 12V output and the power supply with 48V output, and can provide the required auxiliary power for the PCIe card. If it is necessary to power other devices, other power supplies with different voltage outputs can also be adapted. It is only necessary to modify the voltage divider resistor in the voltage identification unit 40 and the determination condition of the control unit 50 without redesigning the power supply motherboard. In addition, the power connection unit 10 in the adaptive power supply can be one or more.

[0103] In summary, the adaptive power supply system provided by the present invention can identify the voltage output by the power connection unit through the voltage identification unit. When the voltage output by the power connection unit is the second voltage, the second voltage can be converted into the first voltage through the second voltage conversion unit. By controlling the switch unit through the control unit, the required output voltage of the adaptive power supply system can be controlled when the power supply is different. In this way, the adaptive power supply system setting can realize the adaptation of the same power supply motherboard to different power supplies. While being able to provide the required auxiliary power supply for the PCIe card, it can save resources, improve power supply efficiency, and facilitate management.

[0104] Because the situation is complicated, it is impossible to list them one by one for explanation. Those skilled in the art should be aware that there may be multiple examples based on the basic principles of the embodiments provided by the present invention and in combination with actual conditions, and all of them should be within the scope of the present invention without paying enough creative work.

[0105] The various embodiments in the specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0106] The above is a detailed introduction to the adaptive power supply system provided by the present invention. Specific examples are used in this article to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method of the present invention and its core idea. It should be pointed out that for ordinary technicians in this technical field, without departing from the principles of the present invention, several improvements and modifications can be made to the present invention, and these improvements and modifications also fall within the scope of protection of the claims of the present invention.

[0107] It should also be noted that, in this specification, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "comprise", "include" or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or equipment including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or equipment. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or equipment including the elements.

Claims

1. An adaptive power supply system, characterized in that: include: A power connection unit, a first voltage conversion unit, a second voltage conversion unit, a voltage identification unit, a control unit, and a switch unit; The power connection unit is used to connect a power source and output the voltage of the power source; The first voltage conversion unit is used to convert the voltage output by the power connection unit to supply power to the control unit and the voltage identification unit; The second voltage conversion unit is used to convert the second voltage output by the power connection unit into a first voltage; The voltage identification unit is used to identify the voltage output by the power connection unit and output a signal representing the voltage output by the power connection unit to the control unit; The control unit is used to control the switch unit to output the first voltage when the power connection unit outputs the first voltage; and to control the switch unit to output the second voltage and the first voltage converted by the second voltage conversion unit when the power connection unit outputs the second voltage.

2. The adaptive power supply system according to claim 1, characterized in that: The switch unit comprises: a first switch unit, a second switch unit, and a third switch unit; the first switch unit is respectively connected to the power connection unit and the control unit; the second switch unit is respectively connected to the power connection unit and the control unit; the third switch unit is respectively connected to the second voltage conversion unit and the control unit; The first switch unit is used to output the voltage output by the power connection unit when the first switch unit is turned on; The second switch unit is used to output the voltage output by the power connection unit when the second switch unit is turned on; The third switch unit is used to output the voltage output by the second voltage conversion unit when the third switch unit is turned on.

3. The adaptive power supply system according to claim 2, characterized in that: The control unit is specifically used for: When the power connection unit outputs a first voltage, the first switch unit and the second switch unit are controlled to be turned on; when the power connection unit outputs a second voltage, the first switch unit and the third switch unit are controlled to be turned on.

4. The adaptive power supply system according to claim 2, characterized in that: The first switch unit, the second switch unit and the third switch unit each include: a first transistor, a second transistor, a third transistor, a first resistor, a second resistor, a third resistor and a capacitor; the first end of the first transistor serves as a control signal input end, the second end of the first transistor is grounded, the third end of the first transistor is connected to the first end of the first resistor, the first end of the second resistor, the first end of the third resistor and the first end of the capacitor, the second end of the first resistor is connected to the second end of the second transistor and serves as a voltage input end, the second end of the second resistor is connected to the first end of the second transistor, the second end of the third resistor is connected to the first end of the third transistor, the second end of the capacitor is connected to the second end of the first transistor, the third end of the second transistor is connected to the third end of the third transistor, and the second end of the third transistor serves as a voltage output end; When the control signal input terminal inputs a first control signal, the first transistor, the second transistor and the third transistor are turned on, and the voltage output terminal outputs the voltage of the voltage input terminal; When the control signal input terminal inputs a second control signal, the first transistor, the second transistor, and the third transistor are turned off, and the voltage output terminal does not output the voltage of the voltage input terminal.

5. The adaptive power supply system according to claim 1, characterized in that: The voltage identification unit comprises: A comparator, a fourth resistor, a fifth resistor and a sixth resistor; the first end of the fourth resistor is connected to the power connection unit as an input end of a voltage identification unit, the second end of the fourth resistor is connected to the first end of the fifth resistor, the second end of the fifth resistor is grounded, the inverting input end of the comparator is connected to an end of the fourth resistor connected to the fifth resistor, the non-inverting input end of the comparator is connected to the output end of the first voltage conversion unit, the output end of the comparator is connected to the control unit as the output end of the voltage identification unit, the first end of the sixth resistor is connected to the output end of the comparator, and the second end of the sixth resistor is connected to the output end of the first voltage conversion unit.

6. The adaptive power supply system according to claim 1, characterized in that: Also includes: The electronic fuse is used to connect the switch unit with the power connection unit and / or connect the second voltage conversion unit with the power connection unit when the electronic fuse is turned on.

7. The adaptive power supply system according to claim 6, characterized in that: The control unit is also used for: Controlling the electronic fuse to be turned on or off.

8. The adaptive power supply system according to claim 6, characterized in that: The electronic fuse comprises: A first electronic fuse and a second electronic fuse; the first electronic fuse is respectively connected to the power connection unit, the first switch unit, the second switch unit and the control unit, and the second electronic fuse is respectively connected to the power connection unit, the second voltage conversion unit and the control unit; The first electronic fuse is used to connect the first switch unit to the power connection unit and the second switch unit to the power connection unit when the first electronic fuse is turned on; The second electronic fuse is used to connect the second voltage conversion unit with the power connection unit when the second electronic fuse is turned on.

9. The adaptive power supply system according to claim 8, characterized in that: The control unit is specifically used for: When the power connection unit outputs a first voltage, the first electronic fuse is controlled to be turned on; when the power connection unit outputs a second voltage, the first electronic fuse and the second electronic fuse are controlled to be turned on.

10. The adaptive power supply system according to claim 9, characterized in that: The control unit is also used for: Read information of the first electronic fuse and / or the second electronic fuse; the information includes any one or more of current information, power consumption information, temperature information, and alarm information.

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