Power supply system, processing method, and program

Abstract

A power supply system capable of improving convenience is provided. [Solution] The power supply system 1 is a power supply system comprising two synchronous rectification power supplies 10a, 10b and a control unit 20, each of which has an ORing circuit 102 at its output end, and the control unit controls the output voltage values ​​of the two synchronous rectification power supplies and determines the state of the ORing circuit based on the detected voltage at the output end, the detected current at the output end, and the voltage value at the load connected to the ORing circuit.

Description

[Technical field]

[0001] The present disclosure relates to a power supply system, a processing method, and a program. [Background technology]

[0002] Power supplies are used in a variety of fields. Patent Document 1 discloses, as a related technique, a power supply system that prevents reverse current in power supply devices that are operated in parallel. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2000-270548 A Summary of the Invention [Problem to be solved by the invention]

[0004] In the system related to Patent Document 1, a technique capable of improving convenience is required.

[0005] An object of each aspect of the present disclosure is to provide a power supply system, a processing method, and a program that can solve the above-mentioned problems. [Means for solving the problem]

[0006] In order to achieve the above object, according to one aspect of the present disclosure, a power supply system includes: A power supply system comprising two synchronous rectification power supplies, a first synchronous rectification power supply and a second synchronous rectification power supply, and a control unit, wherein each of the two synchronous rectification power supplies comprises at its output end an ORing circuit having a MOS-FET provided between an output of a synchronous rectification circuit included in the power supply itself and its load, and a control circuit which acquires respective voltage values ​​of an anode and a cathode of a diode included in the MOS-FET, and controls the MOS-FET to an on or off state based on the acquired respective voltage values ​​of the anode and the cathode of the diode, and the control unit controls output voltage values ​​of the two synchronous rectification power supplies, determines a state of the ORing circuit based on a detected voltage at the output end, a detected current at the output end, and a voltage value at a load connected to the ORing circuit, instructs the first synchronous rectification power supply to have a second voltage value higher than a first voltage value which is a normal voltage value, and determines that the ORing circuit of the first synchronous rectification power supply is in a normal state when the voltage value at the load is the second voltage value. In order to achieve the above object, according to another aspect of the present disclosure, a power supply system includes two synchronous rectification power supplies, namely a first synchronous rectification power supply and a second synchronous rectification power supply, and a control unit, each of the two synchronous rectification power supplies includes a MOS-FET provided between an output of a synchronous rectification circuit included in the power supply and a load of the power supply, and acquires voltage values ​​of the anode and cathode of a diode included in the MOS-FET, and controls the MOS-FET to be in an on state or an off state based on the acquired voltage values ​​of the anode and cathode of the diode. and an ORing circuit having an output terminal and a control circuit for controlling the output voltage of the two synchronous rectification power supplies, and the control unit controls the output voltage values ​​of the two synchronous rectification power supplies, determines the state of the ORing circuit based on the detected voltage at the output terminal, the detected current at the output terminal, and the voltage value at the load connected to the ORing circuit, instructs the first synchronous rectification power supply to set to a second voltage value higher than a first voltage value which is a normal voltage value, and determines that the ORing circuit of the first synchronous rectification power supply has an open failure when the voltage value at the load is the first voltage value. In order to achieve the above object, according to another aspect of the present disclosure, a power supply system includes two synchronous rectification power supplies, i.e., a first synchronous rectification power supply and a second synchronous rectification power supply, and a control unit, wherein each of the two synchronous rectification power supplies has a MOS-FET provided between an output of a synchronous rectification circuit included in the power supply system itself and a load of the power supply system itself, and acquires voltage values ​​of the anode and cathode of a diode included in the MOS-FET, and controls the MOS-FET to be in an on state or in a standby state based on the acquired voltage values ​​of the anode and cathode of the diode, and an ORing circuit having an output terminal and a control circuit for controlling an output terminal of the first synchronous rectification power supply to an off state, and the control unit controls the output voltage values ​​of the two synchronous rectification power supplies, determines the state of the ORing circuit based on a detected voltage at the output terminal, a detected current at the output terminal, and a voltage value at a load connected to the ORing circuit, instructs the first synchronous rectification power supply to have a second voltage value higher than a first voltage value which is a normal voltage value, and determines that the ORing circuit of the second synchronous rectification power supply has a short circuit failure when the detected current is a reverse current. .

[0007] In order to achieve the above object, according to another aspect of the present disclosure, a processing method includes: A processing method executed by a power supply system including two synchronous rectification power supplies each having an ORing circuit at an output terminal and a control unit, the two synchronous rectification power supplies being a first synchronous rectification power supply and a second synchronous rectification power supply, each of the two synchronous rectification power supplies acquiring a MOS-FET provided between an output of a synchronous rectification circuit included in the synchronous rectification power supply and a load of the synchronous rectification power supply, and acquiring a voltage value of each of the anode and cathode of a diode included in the MOS-FET, and turning the MOS-FET on or off based on the acquired voltage values ​​of each of the anode and cathode of the diode. and a control circuit at an output terminal for controlling the output voltage values ​​of the two synchronous rectification power supplies to a normal state, the control circuit controlling the output voltage values ​​of the two synchronous rectification power supplies to a normal state, and determining a state of the ORing circuit based on a detected voltage at the output terminal, a detected current at the output terminal, and a voltage value at a load connected to the ORing circuit; instructing the first synchronous rectification power supply to become a second voltage value higher than a first voltage value which is a normal voltage value, and determining that the ORing circuit of the first synchronous rectification power supply is in a normal state when the voltage value at the load is the second voltage value. In order to achieve the above object, according to another aspect of the present disclosure, a processing method is a processing method executed by a power supply system including two synchronous rectification power supplies each having an ORing circuit at an output terminal, and a control unit, the two synchronous rectification power supplies being a first synchronous rectification power supply and a second synchronous rectification power supply, each of the two synchronous rectification power supplies includes a MOS-FET provided between an output of a synchronous rectification circuit included in the synchronous rectification power supply and a load of the synchronous rectification power supply, and each of the two synchronous rectification power supplies acquires voltage values ​​of the anode and cathode of a diode included in the MOS-FET, and calculates a voltage of the MOS-FET based on the acquired voltage values ​​of the anode and cathode of the diode. and a control circuit that controls an S-FET to an on or off state, and an ORing circuit having an output terminal, controlling the output voltage values ​​of the two synchronous rectification power supplies, and determining a state of the ORing circuit based on a detected voltage at the output terminal, a detected current at the output terminal, and a voltage value at a load connected to the ORing circuit; instructing the first synchronous rectification power supply to become a second voltage value higher than a first voltage value which is a normal voltage value, and determining that the ORing circuit of the first synchronous rectification power supply has an open failure when the voltage value at the load is the first voltage value. In order to achieve the above object, according to another aspect of the present disclosure, a processing method is a processing method executed by a power supply system including two synchronous rectification power supplies each having an ORing circuit at an output terminal, and a control unit, the two synchronous rectification power supplies being a first synchronous rectification power supply and a second synchronous rectification power supply, each of the two synchronous rectification power supplies includes a MOS-FET provided between an output of a synchronous rectification circuit included in the synchronous rectification power supply and a load of the synchronous rectification power supply, and each of the two synchronous rectification power supplies acquires voltage values ​​of the anode and cathode of a diode included in the MOS-FET, and calculates a voltage value based on the acquired voltage values ​​of the anode and cathode of the diode. and a control circuit for controlling the MOS-FET to an on or off state, and an ORing circuit having an output terminal, the ORing circuit controlling output voltage values ​​of the two synchronous rectification power supplies and judging a state of the ORing circuit based on a detected voltage at the output terminal, a detected current at the output terminal, and a voltage value at a load connected to the ORing circuit; instructing the first synchronous rectification power supply to have a second voltage value higher than a first voltage value which is a voltage value under normal conditions, and judging that the ORing circuit of the second synchronous rectification power supply has a short circuit failure when the detected current is a reverse current. .

[0008] In order to achieve the above object, according to another aspect of the present disclosure, a program includes: A computer for a power supply system including two synchronous rectification power supplies each having an ORing circuit at an output terminal, and a control unit, the two synchronous rectification power supplies being a first synchronous rectification power supply and a second synchronous rectification power supply, each of the two synchronous rectification power supplies having a MOS-FET provided between an output of a synchronous rectification circuit included in the power supply itself and a load of the power supply itself, and acquiring respective voltage values ​​of the anode and cathode of a diode included in the MOS-FET, and controlling the MOS-FET to an on state or an off state based on the acquired respective voltage values ​​of the anode and cathode of the diode. The computer is configured to control the output voltage values ​​of the two synchronous rectification power supplies and determine the state of the ORing circuit based on the detected voltage at the output terminal, the detected current at the output terminal, and the voltage value at the load connected to the ORing circuit, instruct the first synchronous rectification power supply to become a second voltage value higher than a first voltage value which is a normal voltage value, and determine that the ORing circuit of the first synchronous rectification power supply is in a normal state when the voltage value at the load is the second voltage value. In order to achieve the above object, according to another aspect of the present disclosure, a program is provided for a computer of a power supply system including two synchronous rectification power supplies each having an ORing circuit at an output terminal, and a control unit, the two synchronous rectification power supplies being a first synchronous rectification power supply and a second synchronous rectification power supply, each of the two synchronous rectification power supplies includes a MOS-FET provided between an output of a synchronous rectification circuit included in the synchronous rectification power supply and a load of the synchronous rectification power supply, and the program acquires voltage values ​​of the anode and cathode of a diode included in the MOS-FET, and controls the MOS-FET based on the acquired voltage values ​​of the anode and cathode of the diode. The computer is configured to control the output voltage values ​​of the two synchronous rectification power supplies, and to determine the state of the ORing circuit based on the detected voltage at the output terminal, the detected current at the output terminal, and the voltage value at a load connected to the ORing circuit, to instruct the first synchronous rectification power supply to become a second voltage value higher than a first voltage value which is a normal voltage value, and to determine that the ORing circuit of the first synchronous rectification power supply has an open failure when the voltage value at the load is the first voltage value. In order to achieve the above object, according to another aspect of the present disclosure, a program is provided for a computer of a power supply system including two synchronous rectification power supplies each having an ORing circuit at an output terminal, and a control unit, the two synchronous rectification power supplies being a first synchronous rectification power supply and a second synchronous rectification power supply, each of the two synchronous rectification power supplies includes a MOS-FET provided between an output of a synchronous rectification circuit included in the synchronous rectification power supply and a load of the synchronous rectification power supply, and the MOS-FET acquires voltage values ​​of the anode and cathode of a diode included in the MOS-FET, and calculates a voltage of the MOS-FET based on the acquired voltage values ​​of the anode and cathode of the diode. and a control circuit at an output end that controls an FET to an on or off state, the computer is caused to execute the following: control the output voltage values ​​of the two synchronous rectification power supplies, and determine a state of the ORing circuit based on a detected voltage at the output end, a detected current at the output end, and a voltage value at a load connected to the ORing circuit; instruct the first synchronous rectification power supply to have a second voltage value higher than a first voltage value that is a normal voltage value; and determine that the ORing circuit of the second synchronous rectification power supply has a short circuit failure when the detected current is a reverse current. . Effect of the Invention

[0009] According to each aspect of the present disclosure, convenience can be improved. [Brief description of the drawings]

[0010] [Figure 1] FIG. 1 is a diagram illustrating an example of a configuration of a power supply system according to some embodiments of the present disclosure. [Diagram 2] FIG. 2 is a diagram illustrating an example of a processing flow of a power supply system according to some embodiments of the present disclosure. [Diagram 3] FIG. 13 is a diagram illustrating an example of a determination of a state of an ORing circuit performed by a control unit according to some embodiments of the present disclosure. [Figure 4] FIG. 1 is a diagram illustrating an example of a configuration of a power supply system according to some embodiments of the present disclosure. [Diagram 5] FIG. 2 is a diagram illustrating an example of a processing flow of a power supply system according to some embodiments of the present disclosure. [Figure 6] FIG. 1 is a schematic block diagram illustrating a configuration of a computer according to at least one embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0011] Hereinafter, the embodiments will be described in detail with reference to the drawings. <Embodiment> (Power supply system configuration) A power supply system 1 according to an embodiment of the present disclosure will be described with reference to the drawings. The power supply system 1 is a system capable of determining the state of an ORing circuit 102, which will be described later.

[0012] FIG. 1 is a diagram showing an example of a configuration of a power supply system 1 according to some embodiments of the present disclosure. As shown in FIG. 1, the power supply system 1 according to an embodiment of the present disclosure includes synchronous rectification power supplies 10a and 10b, a power supply control unit 20, and a load 30. As shown in FIG. 1, the synchronous rectification power supply 10a is connected to the power supply control unit 20 via a wiring L1. As shown in FIG. 1, the synchronous rectification power supply 10b is connected to the power supply control unit 20 via a wiring L2. The outputs of the synchronous rectification power supplies 10a and 10b are connected to the load 30. The power supply control unit 20 is connected to the load 30 via a wiring L3. The wiring L1 is a wiring for controlling and detecting an abnormality of the synchronous rectification power supply 10a. The wiring L2 is a wiring for controlling and detecting an abnormality of the synchronous rectification power supply 10b. The wiring L3 is a wiring for detecting the voltage value at the load 30. Hereinafter, the synchronous rectification power supplies 10a and 10b may be collectively referred to as a synchronous rectification power supply 10.

[0013] As shown in Fig. 1, each of the synchronous rectification power supplies 10 includes a synchronous rectification circuit 101 and an ORing circuit 102. As shown in Fig. 1, the outputs of each of the synchronous rectification power supplies 10 are wired-OR connected.

[0014] The synchronous rectifier circuit 101 includes MOS-FETs (Metal Oxide Semiconductor-Field Effect Transistors) 1011 and 1012, a current detection circuit 1013, an inductor L, and a capacitor C.

[0015] The MOS-FET 1011 is turned on or off under the control of the power supply control unit 20. The MOS-FET 1012 is turned on or off under the control of the power supply control unit 20. Under the control of the power supply control unit 20, the MOS-FETs 1011 and 1012 are each turned on or off (i.e., switched), whereby the voltage input to the synchronous rectification circuit 101 is rectified.

[0016] The current detection circuit 1013 detects a current flowing from the output side to the input side (i.e., an abnormal current flowing backwards) in the synchronous rectification circuit 101. The inductor L and the capacitor C configure an LC filter. This LC filter can suppress the occurrence of ripples in the output voltage of the synchronous rectification circuit 101, compared to a case in which the output voltage of the synchronous rectification circuit 101 is smoothed by only the capacitor C.

[0017] The ORing circuit 102 is connected to the output of the synchronous rectification circuit 101. The ORing circuit 102 includes a MOS-FET 1021 and a control circuit 1022.

[0018] The MOS-FET 1021 is provided between the output of the synchronous rectifier circuit 101 and the load 30. The MOS-FET 1021 is turned on or off under the control of a control circuit 1022.

[0019] The control circuit 1022 acquires the voltage values ​​of the anode and the cathode of the MOS-FET 1021. Based on the acquired voltage values ​​of the anode and the cathode of the MOS-FET 1021, the control circuit 1022 MOS-FET1021 to an on or off state. Specifically, when the voltage value of the anode of the MOS-FET 1021 is higher than the voltage value of the cathode, the control circuit 1022 turns the MOS-FET 1021 on. When the voltage value of the anode of the MOS-FET 1021 is lower than the voltage value of the cathode, the control circuit 1022 turns the MOS-FET 1021 off. When the control circuit 1022 turns the MOS-FET 1021 off, the occurrence of an abnormal current flowing back from the output side to the input side of the synchronous rectification power supply 10 is suppressed.

[0020] As shown in FIG. 1, the power supply control unit 20 includes a control unit 201 and a storage unit 202. The control unit 201 controls each of the synchronous rectification circuits 101. Specifically, when the control unit 201 turns the MOS-FET 1011 to an on state, the control unit 201 turns the MOS-FET 1012 to an off state. When the control unit 201 turns the MOS-FET 1011 to an off state, the control unit 201 turns the MOS-FET 1012 to an on state. When a dead time is provided, the control unit 201 turns the MOS-FETs 1011 and 1012 to an off state during the dead time. When the control unit 201 turns the MOS-FET 1011 to an on state, the control unit 201 turns the MOS-FET 1012 to an off state, and when the control unit 201 turns the MOS-FET 1011 to an off state, the control unit 201 turns the MOS-FET 1012 to an on state. The storage unit 202 stores information necessary for various processes performed by the power supply control unit 20.

[0021] The load 30 is a drive target of the synchronous rectification power supply 10. In other words, the load 30 is supplied with power from the synchronous rectification power supply 10.

[0022] The above-described processing performed by the power supply system 1 according to the embodiment of the present disclosure is merely an example, and is not limited to the above-described processing. For example, the power supply system 1 may perform the processing described below.

[0023] (Processing performed by the power supply system of the present disclosure) Fig. 2 is a diagram showing an example of a processing flow of the power supply system 1 according to some embodiments of the present disclosure. Here, a process for detecting a fault performed by the power supply system 1 shown in Fig. 2 will be described.

[0024] The control unit 201 of the power supply control unit 20 transmits a voltage High command, which is a command to increase the voltage from a normal voltage value (voltage Normal) to the synchronous rectification circuit 101 of the synchronous rectification power supply 10a via the wiring L1, thereby increasing the output voltage of the synchronous rectification circuit 101 of the synchronous rectification power supply 10a (step S1). The voltage value to be increased at this time is assumed to be about +3% (i.e., about +3% of the normal voltage value (voltage Normal)) which is the operating range of the synchronous rectification circuit 101 of the synchronous rectification power supply 10a. With this command, the output voltage of the synchronous rectification circuit 101 of the synchronous rectification power supply 10a becomes higher than the output voltage of the synchronous rectification circuit 101 of the synchronous rectification power supply 10b. As a result, in the MOS-FET 1021 in the ORing circuit 102 of the synchronous rectification power supply 10a, the potential of the anode (A) becomes higher than the potential of the cathode (C). As a result, the ORing circuit 102 of the synchronous rectification power supply 10a is turned on (step S2).

[0025] In addition, in the MOS-FET 1021 in the ORing circuit 102 of the synchronous rectification power supply 10b, the potential of the cathode (C) becomes higher than the potential of the anode (A). As a result, the ORing circuit 102 of the synchronous rectification power supply 10b is turned off (step S3). As a result, the control unit 201 of the power supply control unit 20 transmits a voltage High command via the line L1, and the voltage value obtained by increasing the output voltage of the synchronous rectification circuit 101 of the synchronous rectification power supply 10a is applied to the load 30 (step S4).

[0026] The control unit 201 of the power supply control unit 20 detects the voltage value applied to the load 30 via the line L3 (step S5). The control unit 201 compares the detected voltage value with the voltage value at the load 30 when a high voltage is commanded, which is stored in advance in the storage unit 202 of the power supply control unit 20. By this comparison, the control unit 201 can determine the state of the ORing circuit 102 (step S6), as shown below.

[0027] 3 is a diagram showing an example of the determination of the state of the ORing circuit 102 performed by the control unit 201 according to some embodiments of the present disclosure. Next, a process of determining the state of the ORing circuit 102 performed by the control unit 201 will be described. It is assumed that the output voltage of the synchronous rectification circuit 101 of the synchronous rectification power supply 10a is a voltage value (voltage High) higher than a normal voltage value (voltage Normal) due to a voltage High instruction. It is also assumed that the output voltage of the synchronous rectification circuit 101 of the synchronous rectification power supply 10b is a normal voltage value (voltage Normal).

[0028] The control unit 201 determines whether the voltage value of the load 30 is the same as the voltage value of the High voltage ("High voltage"), whether the voltage value of the load 30 is the same as the normal voltage value ("Normal voltage"), and whether the current detection circuit 1013 of the synchronous rectification power supply 10b has detected a reverse current value ("Detected reverse current value") (step S11).

[0029] When the control unit 201 determines that the voltage value of the load 30 is the same as the voltage value during high voltage (step S11: "high voltage"), it determines that the ORing circuit 102 of the synchronous rectification power supply 10a is in a normal state (step S12). When the control unit 201 determines that the voltage value of the load 30 is the same as the voltage value during normal times (normal voltage) despite the fact that a high voltage instruction has been sent to the synchronous rectification circuit 101 of the synchronous rectification power supply 10a (step S11: "normal voltage"), it determines that the ORing circuit 102 of the synchronous rectification power supply 10a has an open circuit failure (step S13). Furthermore, when the control unit 201 determines that the current detection circuit 1013 included in the synchronous rectification circuit 101 of the synchronous rectification power supply 10b detects a current value in the reverse direction via the wiring L2 ("detect current value in the reverse direction" in step S11), it determines that a reverse current is occurring due to an abnormality in the ORing circuit 102 of the synchronous rectification power supply 10b. In this case, it means that the reverse current prevention from the synchronous rectification power supply 10a side, which has increased the voltage, to the synchronous rectification power supply 10b side is not possible. Therefore, the control unit 201 stops the operation of the synchronous rectification circuit 101 of the synchronous rectification power supply 10b and determines that the ORing circuit 102 of the synchronous rectification power supply 10b has a short circuit failure (step S14).

[0030] Also, when the control unit 201 of the power supply control unit 20 increases the output voltage of the synchronous rectification circuit 101 of the synchronous rectification power supply 10b by sending a voltage High instruction via the wiring L2, it is possible to detect an open failure in the ORing circuit 102 of the synchronous rectification power supply 10b and a short failure in the ORing circuit 102 of the synchronous rectification power supply 10a using a concept similar to that described above.

[0031] Therefore, in the state of step S12, the control unit 201 transmits a voltage High command to the synchronous rectifier circuit 101 of the synchronous rectification power supply 10b via the line L2 (step S15). As a result, the output voltage of the synchronous rectifier circuit 101 of the synchronous rectification power supply 10b is set to a voltage value (voltage High) higher than a normal voltage value (voltage Normal). Also, the output voltage of the synchronous rectifier circuit 101 of the synchronous rectification power supply 10b is set to a normal voltage value (voltage Normal).

[0032] The control unit 201 determines whether the voltage value of the load 30 is the same as the voltage value of the High voltage ("High voltage"), whether the voltage value of the load 30 is the same as the normal voltage value ("Normal voltage"), and whether the current detection circuit 1013 of the synchronous rectification power supply 10a has detected a reverse current value ("Reverse current value detected") (step S16).

[0033] When the control unit 201 determines that the voltage value of the load 30 is the same as the voltage value during high voltage (step S16: "high voltage"), it determines that the ORing circuit 102 of the synchronous rectification power supply 10b is in a normal state (step S17). When the control unit 201 determines that the voltage value of the load 30 is the same as the voltage value during normal times (normal voltage) despite the fact that a high voltage instruction has been sent to the synchronous rectification circuit 101 of the synchronous rectification power supply 10b (step S16: "normal voltage"), it determines that the ORing circuit 102 of the synchronous rectification power supply 10b has an open circuit failure (step S18). Furthermore, when the control unit 201 determines that the current detection circuit 1013 included in the synchronous rectification circuit 101 of the synchronous rectification power supply 10a detects a current value in the reverse direction via the wiring L1 ("detect current value in the reverse direction" in step S16), it determines that a reverse current is occurring due to an abnormality in the ORing circuit 102 of the synchronous rectification power supply 10a. In this case, it means that the reverse current prevention from the synchronous rectification power supply 10b side, which has increased the voltage, to the synchronous rectification power supply 10a side is not possible. Therefore, the control unit 201 stops the operation of the synchronous rectification circuit 101 of the synchronous rectification power supply 10a and determines that the ORing circuit 102 of the synchronous rectification power supply 10a has a short circuit failure (step S19).

[0034] In addition, when the current detection circuit 1013 of the synchronous rectification circuit 101 of the synchronous rectification power supply 10a and the current detection circuit 1013 of the synchronous rectification power supply 10b directly detect the occurrence of a reverse current, it is possible to detect an abnormality due to the occurrence of a reverse current and to stop the operation of the synchronous rectification circuit 101 due to the abnormality detection in a short time. Furthermore, since it is possible to detect an abnormality in a short time, it is possible to minimize the reverse current and prevent a failure of the synchronous rectification circuit 101, and to avoid an abnormal state due to an overcurrent in the output of the synchronous rectification circuit 101 that has increased the output voltage. As a result, it is possible to quickly stop the synchronous rectification power supply 10 in which the ORing circuit 102 has a short circuit failure without affecting the operation of other synchronous rectification power supplies that are operating normally, and it is possible to safely replace the synchronous rectification power supply 10 including the ORing circuit 102 in which the failure has occurred.

[0035] (advantage) The power supply system 1 according to an embodiment of the present disclosure has been described above. The power supply system 1 is a power supply system including two synchronous rectification power supplies 10 and a control unit 201. Each of the two synchronous rectification power supplies 10 includes an ORing circuit 102 at its output terminal. The control unit 201 controls the output voltage values ​​of the two synchronous rectification power supplies 10, and determines the state of the ORing circuit 102 based on the detected voltage at the output terminal, the detected current at the output terminal, and the voltage value at the load connected to the ORing circuit 102.

[0036] This power supply system 1 can determine the state of the ORing circuit 102. In other words, the power supply system 1 can improve convenience.

[0037] In another embodiment of the present disclosure, the power supply system 1 may include three or more synchronous rectification power supplies 10. Also, the ORing circuit 102 may use a diode instead of a MOS-FET.

[0038] (advantage) Even if the power supply system 1 includes three or more synchronous rectification power supplies 10, the control unit 201 can determine the state of the ORing circuit 102. Even if the ORing circuit 102 uses a diode instead of a MOS-FET, it can quickly stop a synchronous rectification power supply including an ORing circuit in which a fault has occurred without affecting other synchronous rectification power supplies, just as in the case of using a MOS-FET.

[0039] Fig. 4 is a diagram showing an example of a configuration of a power supply system 1 according to some embodiments of the present disclosure. As shown in Fig. 4, the power supply system 1 is a power supply system including two synchronous rectification power supplies 301 and a control unit 302. In the power supply system 1, each of the two synchronous rectification power supplies 301 includes an ORing circuit at an output terminal. The control unit 302 controls the output voltage values ​​of the two synchronous rectification power supplies 301, and determines the state of the ORing circuit based on a detected voltage at the output terminal, a detected current at the output terminal, and a voltage value at a load connected to the ORing circuit.

[0040] The two synchronous rectification power supplies 301 can be realized, for example, by using the functions of the synchronous rectification power supplies 10a and 10b illustrated in Fig. 1. The control unit 302 can be realized, for example, by using the functions of the control unit 201 illustrated in Fig. 1.

[0041] Next, a process performed by the power supply system 1 according to some embodiments of the present disclosure will be described. Fig. 5 is a diagram showing an example of a process flow of the power supply system 1 according to some embodiments of the present disclosure. Here, the process of the power supply system 1 will be described with reference to Fig. 5.

[0042] In a power supply system 1 including two synchronous rectification power supplies 301 each having an ORing circuit at its output terminal, a control unit 302 controls the output voltage values ​​of the two synchronous rectification power supplies 301, and determines the state of the ORing circuit based on the detected voltage at the output terminal, the detected current at the output terminal, and the voltage value at the load connected to the ORing circuit (step S101).

[0043] The power supply system 1 according to some embodiments of the present disclosure has been described above. This power supply system 1 can improve convenience.

[0044] The order of the processes in each embodiment of the present disclosure may be changed as long as appropriate processes are performed.

[0045] Although each embodiment of the present disclosure has been described, the above-mentioned power supply system 1, synchronous rectification power supply 10, power supply control unit 20, and other control devices may have a computer system inside. The above-mentioned process steps are stored in a computer-readable recording medium in the form of a program, and the above-mentioned process is performed by the computer reading and executing this program. Specific examples of computers are shown below.

[0046] 6 is a schematic block diagram showing the configuration of a computer according to at least one embodiment. As shown in FIG. 6, the computer 5 includes a CPU (Central Processing Unit) 6, a main memory 7, a storage 8, and an interface 9.

[0047] For example, the above-mentioned power supply system 1, synchronous rectification power supply 10, power supply control unit 20, and other control devices are each implemented in a computer 5. The operations of each of the above-mentioned processing units are stored in the form of a program in a storage 8. A CPU 6 reads the program from the storage 8, loads it in the main memory 7, and executes the above-mentioned processes in accordance with the program. The CPU 6 also secures storage areas in the main memory 7 corresponding to each of the above-mentioned storage units in accordance with the program.

[0048] Examples of the storage 8 include a hard disk drive (HDD), a solid state drive (SSD), a magnetic disk, a magneto-optical disk, a compact disc read only memory (CD-ROM), a digital versatile disc read only memory (DVD-ROM), and a semiconductor memory. The storage 8 may be an internal medium directly connected to the bus of the computer 5, or an external medium connected to the computer 5 via an interface 9 or a communication line. In addition, when the program is distributed to the computer 5 via a communication line, the computer 5 that receives the program may load the program into the main memory 7 and execute the above-mentioned process. In at least one embodiment, the storage 8 is a non-transitory tangible storage medium.

[0049] The program may also realize some of the functions described above. Furthermore, the program may be a file that can realize the functions described above in combination with a program already recorded in the computer system, that is, a so-called differential file (differential program).

[0050] Although some embodiments of the present disclosure have been described, these embodiments are merely examples and do not limit the scope of the disclosure. Various additions, omissions, substitutions, and modifications may be made to these embodiments without departing from the gist of the disclosure.

[0051] Note that some or all of the above-described embodiments can be described as, but are not limited to, the following supplementary notes.

[0052] (Appendix 1) A power supply system including two synchronous rectification power supplies and a control unit, Each of the two synchronous rectification power supplies is ORing circuit at the output terminal, Equipped with The control unit is Controlling the output voltages of the two synchronous rectification power supplies, and determining the state of the ORing circuit based on the detected voltage at the output terminal, the detected current at the output terminal, and the voltage value at a load connected to the ORing circuit; Power supply system.

[0053] (Appendix 2) The two synchronous rectification power supplies are: The first synchronous rectification power supply and the second synchronous rectification power supply are The control unit is instructing the first synchronous rectification power supply to have a second voltage value higher than a first voltage value which is a normal voltage value, and determining that the ORing circuit of the first synchronous rectification power supply is in a normal state when the voltage value at the load is the second voltage value; 2. The power supply system of claim 1.

[0054] (Appendix 3) The two synchronous rectification power supplies are: The first synchronous rectification power supply and the second synchronous rectification power supply are The control unit is instructing the first synchronous rectification power supply to have a second voltage value higher than a first voltage value which is a normal voltage value, and determining that an open circuit fault has occurred in the ORing circuit of the first synchronous rectification power supply when a voltage value at the load is the first voltage value; 2. The power supply system of claim 1 .

[0055] (Appendix 4) The two synchronous rectification power supplies are: The first synchronous rectification power supply and the second synchronous rectification power supply are The control unit is instructing the first synchronous rectification power supply to have a second voltage value higher than a first voltage value which is a normal voltage value, and determining that the ORing circuit of the second synchronous rectification power supply has a short circuit failure when the detected current is a reverse current; 4. The power supply system according to claim 1 ,

[0056] (Appendix 5) The control unit is when it is determined that the ORing circuit of the second synchronous rectification power supply has a short circuit failure, the output of the first synchronous rectification power supply is stopped. 5. The power supply system of claim 4.

[0057] (Appendix 6) The control unit is Identifying the detected voltage; 6. The power supply system of claim 1 ,

[0058] (Appendix 7) The ORing circuit includes: Equipped with MOS-FET, 7. The power supply system of claim 1 .

[0059] (Appendix 8) The ORing circuit includes: With a diode, 7. The power supply system of claim 1 .

[0060] (Appendix 9) A processing method performed by a power supply system including two synchronous rectification power supplies each having an ORing circuit at an output terminal and a control unit, comprising: Controlling the output voltages of the two synchronous rectification power supplies, and judging the state of the ORing circuit based on the detected voltage at the output terminal, the detected current at the output terminal, and the voltage value at a load connected to the ORing circuit; A processing method comprising:

[0061] (Appendix 10) The two synchronous rectification power supplies are: The first synchronous rectification power supply and the second synchronous rectification power supply are instructing the first synchronous rectification power supply to have a second voltage value higher than a first voltage value which is a normal voltage value, and determining that the ORing circuit of the first synchronous rectification power supply is in a normal state when a voltage value at the load is the second voltage value; 10. The method of claim 9, comprising:

[0062] (Appendix 11) The two synchronous rectification power supplies are: The first synchronous rectification power supply and the second synchronous rectification power supply are instructing the first synchronous rectification power supply to have a second voltage value higher than a first voltage value which is a normal voltage value, and determining that an open circuit fault has occurred in the ORing circuit of the first synchronous rectification power supply when a voltage value at the load is the first voltage value; 11. The method of claim 9 or 10,

[0063] (Appendix 12) The two synchronous rectification power supplies are: The first synchronous rectification power supply and the second synchronous rectification power supply are instructing the first synchronous rectification power supply to have a second voltage value higher than a first voltage value which is a normal voltage value, and determining that the ORing circuit of the second synchronous rectification power supply has a short circuit failure when the detected current is a reverse current; 12. The method according to any one of claims 9 to 11,

[0064] (Appendix 13) when it is determined that the ORing circuit of the second synchronous rectification power supply has a short circuit failure, stopping the output of the first synchronous rectification power supply; 13. The method of claim 12, comprising:

[0065] (Appendix 14) determining the detected voltage; 14. The method according to any one of claims 9 to 13,

[0066] (Appendix 15) The ORing circuit includes: Equipped with MOS-FET, 15. The processing method according to any one of claims 9 to 14.

[0067] (Appendix 16) The ORing circuit includes: With a diode, 15. The processing method according to any one of claims 9 to 14.

[0068] (Appendix 17) A computer of a power supply system including two synchronous rectification power supplies each having an ORing circuit at an output terminal and a control unit, Controlling the output voltages of the two synchronous rectification power supplies, and judging the state of the ORing circuit based on the detected voltage at the output terminal, the detected current at the output terminal, and the voltage value at a load connected to the ORing circuit; A program that executes the following.

[0069] (Appendix 18) The two synchronous rectification power supplies are: The first synchronous rectification power supply and the second synchronous rectification power supply are instructing the first synchronous rectification power supply to have a second voltage value higher than a first voltage value which is a normal voltage value, and determining that the ORing circuit of the first synchronous rectification power supply is in a normal state when a voltage value at the load is the second voltage value; 18. The program according to claim 17, which causes the computer to execute the above steps.

[0070] (Appendix 19) The two synchronous rectification power supplies are: The first synchronous rectification power supply and the second synchronous rectification power supply are instructing the first synchronous rectification power supply to have a second voltage value higher than a first voltage value which is a normal voltage value, and determining that an open circuit fault has occurred in the ORing circuit of the first synchronous rectification power supply when a voltage value at the load is the first voltage value; 19. The program according to claim 17 or 18, which causes the computer to execute the above steps.

[0071] (Appendix 20) The two synchronous rectification power supplies are: The first synchronous rectification power supply and the second synchronous rectification power supply are instructing the first synchronous rectification power supply to have a second voltage value higher than a first voltage value which is a normal voltage value, and determining that the ORing circuit of the second synchronous rectification power supply has a short circuit failure when the detected current is a reverse current; 20. The program according to any one of claims 17 to 19, which causes the computer to execute the program.

[0072] (Appendix 21) when it is determined that the ORing circuit of the second synchronous rectification power supply has a short circuit failure, stopping the output of the first synchronous rectification power supply; 21. The program according to claim 20, which causes the computer to execute the above steps.

[0073] (Appendix 22) determining the detected voltage; 22. The program according to any one of claims 17 to 21, which causes the computer to execute the program.

[0074] (Appendix 23) The ORing circuit includes: Equipped with MOS-FET, 23. The program according to any one of claims 17 to 22.

[0075] (Appendix 24) The ORing circuit includes: With a diode, 23. The program according to any one of claims 17 to 22. [Explanation of symbols]

[0076] 1. Power supply system 5. Computers 6, 205··CPU 7. Main memory 8. Storage 9. Interface 10...Synchronous rectification power supply 20 Power supply control section 30 Load 101...Synchronous rectifier circuit 102 ORing circuit 1011, 1012...MOS-FET(Metal Oxide Semiconductor-Field Effect Transistor) 1013 Current detection circuit L···Inductor C···Capacitor

Claims

1. A power supply system comprising two synchronous rectification power supplies, which are a first synchronous rectification power supply and a second synchronous rectification power supply, and a control unit, Each of the two synchronous rectification power supplies has an ORing circuit including: a MOS-FET provided between an output of a synchronous rectification circuit included in the ORing circuit and a load of the ORing circuit; and a control circuit that acquires voltage values ​​of an anode and a cathode of a diode included in the MOS-FET, and controls the MOS-FET to an on or off state based on the acquired voltage values ​​of the anode and the cathode of the diode; At the output end, The control unit is Controlling the output voltages of the two synchronous rectification power supplies, and determining a state of the ORing circuit based on a detected voltage at the output terminal, a detected current at the output terminal, and a voltage value at a load connected to the ORing circuit; instructing the first synchronous rectification power supply to have a second voltage value higher than a first voltage value which is a normal voltage value, and determining that the ORing circuit of the first synchronous rectification power supply is in a normal state when the voltage value at the load is the second voltage value; Power supply system.

2. A power supply system comprising two synchronous rectification power supplies, which are a first synchronous rectification power supply and a second synchronous rectification power supply, and a control unit, Each of the two synchronous rectification power supplies has an ORing circuit including: a MOS-FET provided between an output of a synchronous rectification circuit included in the ORing circuit and a load of the ORing circuit; and a control circuit that acquires voltage values ​​of an anode and a cathode of a diode included in the MOS-FET, and controls the MOS-FET to an on or off state based on the acquired voltage values ​​of the anode and the cathode of the diode; At the output end, The control unit is Controlling the output voltages of the two synchronous rectification power supplies, and determining a state of the ORing circuit based on a detected voltage at the output terminal, a detected current at the output terminal, and a voltage value at a load connected to the ORing circuit; instructing the first synchronous rectification power supply to have a second voltage value higher than a first voltage value which is a normal voltage value, and determining that an open circuit fault has occurred in the ORing circuit of the first synchronous rectification power supply when a voltage value at the load is the first voltage value; Power supply system.

3. A power supply system comprising two synchronous rectification power supplies, which are a first synchronous rectification power supply and a second synchronous rectification power supply, and a control unit, Each of the two synchronous rectification power supplies has an ORing circuit including: a MOS-FET provided between an output of a synchronous rectification circuit included in the ORing circuit and a load of the ORing circuit; and a control circuit that acquires voltage values ​​of an anode and a cathode of a diode included in the MOS-FET, and controls the MOS-FET to an on or off state based on the acquired voltage values ​​of the anode and the cathode of the diode; At the output end, The control unit is Controlling the output voltages of the two synchronous rectification power supplies, and determining a state of the ORing circuit based on a detected voltage at the output terminal, a detected current at the output terminal, and a voltage value at a load connected to the ORing circuit; instructing the first synchronous rectification power supply to have a second voltage value higher than a first voltage value which is a normal voltage value, and determining that the ORing circuit of the second synchronous rectification power supply has a short circuit failure when the detected current is a reverse current; Power supply system.

4. The control unit is when it is determined that the ORing circuit of the second synchronous rectification power supply has a short circuit failure, the output of the first synchronous rectification power supply is stopped. The power supply system of claim 3.

5. The control unit is Identifying the detected voltage; The power supply system according to any one of claims 1 to 3.

6. A processing method performed by a power supply system including two synchronous rectification power supplies each having an ORing circuit at an output end and a control unit, comprising: The two synchronous rectification power supplies are a first synchronous rectification power supply and a second synchronous rectification power supply; Each of the two synchronous rectification power supplies has an ORing circuit including: a MOS-FET provided between an output of a synchronous rectification circuit included in the ORing circuit and a load of the ORing circuit; and a control circuit that acquires voltage values ​​of an anode and a cathode of a diode included in the MOS-FET, and controls the MOS-FET to an on or off state based on the acquired voltage values ​​of the anode and the cathode of the diode; At the output end, Controlling the output voltages of the two synchronous rectification power supplies, and judging the state of the ORing circuit based on the detected voltage at the output terminal, the detected current at the output terminal, and the voltage value at a load connected to the ORing circuit; instructing the first synchronous rectification power supply to have a second voltage value higher than a first voltage value which is a normal voltage value, and determining that the ORing circuit of the first synchronous rectification power supply is in a normal state when the voltage value at the load is the second voltage value; A processing method comprising:

7. A computer for a power supply system including two synchronous rectification power supplies each having an ORing circuit at an output terminal and a control unit, The two synchronous rectification power supplies are a first synchronous rectification power supply and a second synchronous rectification power supply; Each of the two synchronous rectification power supplies has an ORing circuit including: a MOS-FET provided between an output of a synchronous rectification circuit included in the ORing circuit and a load of the ORing circuit; and a control circuit that acquires voltage values ​​of an anode and a cathode of a diode included in the MOS-FET, and controls the MOS-FET to an on or off state based on the acquired voltage values ​​of the anode and the cathode of the diode; Provide the output terminal to the computer, Controlling the output voltages of the two synchronous rectification power supplies, and judging the state of the ORing circuit based on the detected voltage at the output terminal, the detected current at the output terminal, and the voltage value at a load connected to the ORing circuit; instructing the first synchronous rectification power supply to have a second voltage value higher than a first voltage value which is a normal voltage value, and determining that the ORing circuit of the first synchronous rectification power supply is in a normal state when the voltage value at the load is the second voltage value; A program that executes the following.

8. A processing method executed by a power supply system including two synchronous rectification power supplies each having an ORing circuit at an output terminal and a control unit, comprising: The two synchronous rectification power supplies are a first synchronous rectification power supply and a second synchronous rectification power supply; Each of the two synchronous rectification power supplies has an ORing circuit including: a MOS-FET provided between an output of a synchronous rectification circuit included in the ORing circuit and a load of the ORing circuit; and a control circuit that acquires voltage values ​​of an anode and a cathode of a diode included in the MOS-FET, and controls the MOS-FET to an on or off state based on the acquired voltage values ​​of the anode and the cathode of the diode; At the output end, Controlling the output voltages of the two synchronous rectification power supplies, and judging the state of the ORing circuit based on the detected voltage at the output terminal, the detected current at the output terminal, and the voltage value at a load connected to the ORing circuit; instructing the first synchronous rectification power supply to have a second voltage value higher than a first voltage value which is a normal voltage value, and determining that an open circuit fault has occurred in the ORing circuit of the first synchronous rectification power supply when a voltage value at the load is the first voltage value; A processing method comprising:

9. A computer for a power supply system comprising two synchronous rectification power supplies each having an ORing circuit at its output terminal and a control unit, The two synchronous rectification power supplies are a first synchronous rectification power supply and a second synchronous rectification power supply; Each of the two synchronous rectification power supplies has an ORing circuit including: a MOS-FET provided between an output of a synchronous rectification circuit included in the ORing circuit and a load of the ORing circuit; and a control circuit that acquires voltage values ​​of an anode and a cathode of a diode included in the MOS-FET, and controls the MOS-FET to an on or off state based on the acquired voltage values ​​of the anode and the cathode of the diode; Provide the output terminal to the computer, Controlling the output voltages of the two synchronous rectification power supplies, and judging the state of the ORing circuit based on the detected voltage at the output terminal, the detected current at the output terminal, and the voltage value at a load connected to the ORing circuit; instructing the first synchronous rectification power supply to have a second voltage value higher than a first voltage value which is a normal voltage value, and determining that an open circuit fault has occurred in the ORing circuit of the first synchronous rectification power supply when a voltage value at the load is the first voltage value; A program that executes the following.

10. A processing method executed by a power supply system including two synchronous rectification power supplies each having an ORing circuit at an output terminal and a control unit, comprising: The two synchronous rectification power supplies are a first synchronous rectification power supply and a second synchronous rectification power supply; Each of the two synchronous rectification power supplies has an ORing circuit including: a MOS-FET provided between an output of a synchronous rectification circuit included in the ORing circuit and a load of the ORing circuit; and a control circuit that acquires voltage values ​​of an anode and a cathode of a diode included in the MOS-FET, and controls the MOS-FET to an on or off state based on the acquired voltage values ​​of the anode and the cathode of the diode; At the output end, Controlling the output voltages of the two synchronous rectification power supplies, and judging the state of the ORing circuit based on the detected voltage at the output terminal, the detected current at the output terminal, and the voltage value at a load connected to the ORing circuit; instructing the first synchronous rectification power supply to have a second voltage value higher than a first voltage value which is a normal voltage value, and determining that the ORing circuit of the second synchronous rectification power supply has a short circuit failure when the detected current is a reverse current; A processing method comprising:

11. A computer for a power supply system comprising two synchronous rectification power supplies each having an ORing circuit at its output terminal and a control unit, The two synchronous rectification power supplies are a first synchronous rectification power supply and a second synchronous rectification power supply; Each of the two synchronous rectification power supplies has an ORing circuit including: a MOS-FET provided between an output of a synchronous rectification circuit included in the ORing circuit and a load of the ORing circuit; and a control circuit that acquires voltage values ​​of an anode and a cathode of a diode included in the MOS-FET, and controls the MOS-FET to an on or off state based on the acquired voltage values ​​of the anode and the cathode of the diode; Provide the output terminal to the computer, Controlling the output voltages of the two synchronous rectification power supplies, and judging the state of the ORing circuit based on the detected voltage at the output terminal, the detected current at the output terminal, and the voltage value at a load connected to the ORing circuit; instructing the first synchronous rectification power supply to have a second voltage value higher than a first voltage value which is a normal voltage value, and determining that the ORing circuit of the second synchronous rectification power supply has a short circuit failure when the detected current is a reverse current; A program that executes the following.

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