Power supply multi-output fault isolation system, method, storage medium and program product

Abstract

The application provides a power supply multi-output fault isolation system, method, storage medium and program product. The power supply multi-output fault isolation system comprises a main output circuit, a driving power supply module and a redundant driving power supply module. The driving power supply module is used for outputting a bus voltage and generating a main driving voltage according to the bus voltage, and providing the main driving voltage to the main output circuit. The redundant driving power supply module is used for generating a backup driving voltage according to an input voltage or a rectified direct-current voltage output by the driving power supply module, and providing the backup driving voltage to the main output circuit. The main output circuit is used for outputting a main output voltage according to the main driving voltage when the main driving voltage is normal, and outputting the main output voltage according to the backup driving voltage when the main driving voltage is abnormal, so as to realize fault decoupling and isolation of the driving power supply module and the main output circuit, avoid power failure of the whole AC-DC power supply caused by driving failure, and improve the reliability of the AC-DC power supply.

Description

Technical Field

[0001] This application relates to the field of server technology, and in particular to a power supply multi-output fault isolation system, method, storage medium, and program product. Background Technology

[0002] In the server field, server power supply units (PSUs) typically use an N+N distributed power supply architecture to power the load, or an N+2 centralized power supply architecture to power the load, in order to ensure the reliable operation of the load connected to the server.

[0003] Currently, in PSU (Power Supply Unit) AC-DC power supplies, the drive voltage output by the drive power supply module is often achieved using a single transformer with multiple windings integrated. Specifically, the drive voltage output by the auxiliary output circuit in the drive power supply module shares the same transformer magnetic circuit and winding structure. After rectification and filtering, it provides the drive voltage to the main output circuit.

[0004] However, the inventors discovered that the AC-DC power supply has poor reliability in some application scenarios. Summary of the Invention

[0005] This application provides a power supply multi-output fault isolation system, method, storage medium, and program product to solve the problem of poor reliability of the aforementioned AC-DC power supply in some scenarios in related technologies.

[0006] In a first aspect, this application provides a power supply multi-output fault isolation system, including: a main output circuit, a drive power supply module, and a redundant drive power supply module;

[0007] The drive power supply module is used to output the bus voltage and generate the main drive voltage based on the bus voltage, providing the main drive voltage to the main output circuit;

[0008] The redundant drive power supply module is used to generate a backup drive voltage based on the input voltage or the rectified DC voltage output by the drive power supply module, and to provide a backup drive voltage to the main output circuit.

[0009] The main output circuit is used to output the main output voltage according to the main drive voltage when the main drive voltage is normal, and to output the main output voltage according to the backup drive voltage when the main drive voltage is abnormal.

[0010] In one possible implementation, the main output circuit includes a drive selection circuit; the first input terminal of the drive selection circuit is connected to the output terminal of the drive power supply module to receive the main drive voltage; the second input terminal of the drive selection circuit is connected to the output terminal of the redundant drive power supply module to receive the backup drive voltage; the drive selection circuit is used to output the main drive voltage when the main drive voltage is normal, and to output the backup drive voltage when the main drive voltage is abnormal.

[0011] In one possible implementation, the drive selection circuit includes at least one diode for controlling the switching between the main drive voltage and the backup drive voltage.

[0012] The drive selection circuit may include at least one gate circuit, which is used to control the switching between the main drive voltage and the backup drive voltage.

[0013] In one possible implementation, the drive power supply module includes a bridge rectifier circuit, a PFC boost circuit, and an auxiliary output circuit.

[0014] The output terminal of the bridge rectifier circuit is connected to the input terminal of the PFC boost circuit;

[0015] PFC boost circuit is used to output bus voltage;

[0016] The input terminal of the auxiliary output circuit is connected to the output terminal of the PFC boost circuit to receive the bus voltage and generate the main drive voltage based on the bus voltage.

[0017] In one possible implementation, the input of the redundant drive power supply module is connected to the output of the bridge rectifier circuit; or the input of the redundant drive power supply module is connected to the input of the bridge rectifier circuit.

[0018] In one possible implementation, the auxiliary output circuit includes a primary isolation circuit of the main transformer, a primary drive circuit of the main transformer, and multiple sets of secondary drive circuits of the main transformer; the primary isolation circuit of the main transformer is magnetically coupled to the primary drive circuit of the main transformer and the multiple sets of secondary drive circuits of the main transformer, and is used to output the corresponding main drive voltage to the primary drive circuit of the main transformer and the multiple sets of secondary drive circuits of the main transformer respectively.

[0019] In one possible implementation, the redundant drive power supply module includes a primary isolation circuit of a backup transformer, a primary drive circuit of a backup transformer, and multiple sets of secondary drive circuits of backup transformers; the primary isolation circuit of the backup transformer is magnetically coupled to the primary drive circuit of the backup transformer and the multiple sets of secondary drive circuits of the backup transformer, and is used to output corresponding backup drive voltages to the primary drive circuit of the backup transformer and the multiple sets of secondary drive circuits of the backup transformer respectively.

[0020] Secondly, this application provides a power supply multiple-output fault isolation method, applied to the power supply multiple-output fault isolation system provided in the first aspect above, comprising: detecting whether the main drive voltage output by the drive power supply module is normal; if the main drive voltage is normal, driving the main output circuit to output the main output voltage according to the main drive voltage; if the main drive voltage is abnormal, driving the main output circuit to output the main output voltage according to the backup drive voltage output by the redundant drive power supply module.

[0021] Thirdly, this application provides a computer-readable storage medium storing computer-executable instructions, which, when executed by a processor, are used to implement the power supply multiple-output fault isolation method provided in the second aspect above.

[0022] Fourthly, this application provides a computer program product, comprising: a computer program that, when executed by a processor, implements the power supply multiple output fault isolation method provided in the second aspect above.

[0023] This application provides a power supply multi-output fault isolation system, method, storage medium, and program product. The power supply multi-output fault isolation system includes a main output circuit, a drive power supply module, and a redundant drive power supply module. The drive power supply module outputs the bus voltage and generates a main drive voltage based on the bus voltage, providing the main drive voltage to the main output circuit. The redundant drive power supply module generates a backup drive voltage based on the input voltage or the rectified DC voltage output by the drive power supply module, providing a backup drive voltage to the main output circuit. The main output circuit outputs the main output voltage based on the main drive voltage when it is normal, and outputs the main output voltage based on the backup drive voltage when the main drive voltage is abnormal. This application, by introducing an independent redundant drive power supply module, ensures continuous power supply to the main output circuit by using the backup drive voltage from the redundant drive power supply module to drive the main output circuit when the main drive voltage output by the drive power supply module is abnormal. This achieves fault decoupling and isolation between the drive power supply module and the main output circuit, preventing the entire AC-DC power supply from failing due to drive failure, thereby improving the reliability of the AC-DC power supply. Attached Figure Description

[0024] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0025] Figure 1 Schematic diagram of the power supply multi-output fault isolation system provided in the embodiments of this application Figure 1 ;

[0026] Figure 2This is a schematic diagram of the drive selection circuit provided in an embodiment of this application;

[0027] Figure 3 Schematic diagram of the power supply multi-output fault isolation system provided in the embodiments of this application Figure 2 ;

[0028] Figure 4 This is a flowchart illustrating the power supply multi-output fault isolation method provided in an embodiment of this application.

[0029] The accompanying drawings illustrate specific embodiments of this application, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concept of this application to those skilled in the art through reference to particular embodiments. Detailed Implementation

[0030] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims.

[0031] When the power supply architecture of the server PSU is transformed from the traditional N+N distributed power supply architecture to the N+2 centralized power supply architecture suitable for high-power AI servers, the workload of the PSU increases from a long-term 50% load to 100% load operation, making the power supply conditions more demanding. Correspondingly, the requirements for the fault-free uptime, fault isolation capability, and fault blast radius control of the power supply system are significantly increased, and the requirements for power supply reliability are also more stringent.

[0032] Currently, in PSU AC-DC power supplies, the drive voltage output of the drive power supply module is typically achieved using a single transformer with multiple windings integrated. In this structure, the drive voltage output from the auxiliary output circuit in the drive power supply module, used to drive the main output circuit, shares the transformer's magnetic circuit and windings. When the auxiliary output circuit experiences overpower, overtemperature, or overvoltage faults, it directly leads to an interruption of the drive voltage for the main output circuit, resulting in a loss of main output drive power and ultimately causing a power outage in the main output circuit. This results in low overall reliability of the AC-DC power supply.

[0033] Based on the technical problems existing in related technologies, the embodiments of this application introduce an independent redundant drive power supply module. When the main drive voltage output by the drive power supply module is abnormal, the backup drive voltage output by the redundant drive power supply module drives the main output circuit to output the main output voltage, thereby ensuring that the main output circuit is continuously powered. This achieves fault decoupling and isolation between the drive power supply module and the main output circuit, avoiding the entire AC-DC power supply from losing power and failing due to drive failure, thereby improving the reliability of the AC-DC power supply.

[0034] The application scenarios of the embodiments of this application will be described below first.

[0035] The power supply multi-output fault isolation system and method provided in this application are applicable to server power supply applications with high reliability requirements, especially AI server scenarios using an N+2 centralized power supply architecture. In this scenario, a single PSU operates at 100% load for extended periods, placing stringent demands on the power supply system's fault-free uptime, fault isolation capabilities, and operational efficiency. For example, in AI server rooms, the PSU needs to provide stable power to high-power components such as CPUs and GPUs, while ensuring that the main output circuit (such as the 12V main power supply) continues to operate even when auxiliary output circuits (such as standby power supply and drive power supply) fail, to avoid power outages or cascading failures across the entire rack.

[0036] The power multi-output fault isolation system provided in this application will be described in detail below with reference to specific embodiments.

[0037] Figure 1 Schematic diagram of the power supply multi-output fault isolation system provided in the embodiments of this application Figure 1 .like Figure 1 As shown, the power supply multi-output fault isolation system includes a main output circuit, a drive power supply module, and a redundant drive power supply module.

[0038] Among them, the drive power supply module is used to output the bus voltage and generate the main drive voltage according to the bus voltage, and provide the main drive voltage to the main output circuit;

[0039] The redundant drive power supply module is used to generate a backup drive voltage based on the input voltage or the rectified DC voltage output by the drive power supply module, and to provide a backup drive voltage to the main output circuit.

[0040] The main output circuit is used to output the main output voltage according to the main drive voltage when the main drive voltage is normal, and to output the main output voltage according to the backup drive voltage when the main drive voltage is abnormal.

[0041] For example, the input voltage can be the voltage corresponding to alternating current (AC).

[0042] For example, the drive power supply module includes a bridge rectifier circuit, a PFC boost circuit, and an auxiliary output circuit connected in sequence. The bridge rectifier circuit converts the input voltage into a rectified DC voltage after power rectification. The PFC boost circuit boosts the rectified DC voltage to obtain the bus voltage. The auxiliary output circuit generates the main drive voltage for driving the main output circuit drive circuit, and an auxiliary output voltage for powering other loads in the system, based on the bus voltage. The auxiliary output voltage does not participate in the driving process of the main output circuit.

[0043] For example, in one possible implementation, the redundant drive power supply module receives the input voltage, generates a DC voltage through a built-in rectifier circuit, and then directly generates a backup drive voltage for driving the main output circuit drive circuit after voltage regulation, filtering, and drive generation circuit processing. The backup drive voltage is then output to the main output circuit, so that when the main drive voltage is abnormal, the main output circuit outputs the main output voltage under the drive of the backup drive voltage. In another possible implementation, the redundant drive power supply module receives the rectified DC voltage output from the drive power supply module, and directly generates a backup drive voltage for driving the main output circuit drive circuit after voltage regulation, filtering, and drive generation circuit processing. The backup drive voltage is then output to the main output circuit, so that when the main drive voltage is abnormal, the main output circuit outputs the main output voltage under the drive of the backup drive voltage.

[0044] It is understood that, in the embodiments of this application, the redundant drive power supply module can ensure that when the PFC boost circuit or the auxiliary output circuit in the drive power supply module fails, it can still generate a backup drive voltage for driving the main output circuit drive circuit to supply power to the main output circuit, ensuring that the main output circuit works stably without power loss.

[0045] Optionally, while the main output circuit outputs the main output voltage based on the main drive voltage, the redundant drive power supply module is in standby mode. In this mode, the redundant drive power supply module continues to generate a backup drive voltage, but the isolation function of the drive selection circuit (such as a diode or gate circuit) prevents the backup drive voltage from flowing to the main output circuit. In standby mode, the output terminal of the redundant drive power supply module maintains electrical isolation from the main output circuit, ensuring the stability of the backup drive voltage and preventing erroneous switching due to fluctuations in the main drive voltage.

[0046] like Figure 1 As shown, optionally, in some embodiments, the main drive voltage or backup drive voltage can also be used to drive the bridge rectifier circuit and / or the PFC boost circuit.

[0047] For example, the drive power supply module may also include an inrush current limiting circuit connected to the bridge rectifier circuit. Figure 1 (Not shown in the image), this inrush current limiting circuit is used to limit and suppress the input AC current in order to suppress the inrush current generated at the moment of power-on.

[0048] In this embodiment, by introducing an independent redundant drive power supply module, when the main drive voltage output by the drive power supply module is abnormal, the backup drive voltage output by the redundant drive power supply module drives the main output circuit to output the main output voltage, thereby ensuring that the main output circuit is continuously powered. This achieves fault decoupling and isolation between the drive power supply module and the main output circuit, avoiding the entire AC-DC power supply from losing power and failing due to drive failure, thereby improving the reliability of the AC-DC power supply.

[0049] In contrast to related technologies, a failure in the auxiliary output circuit of the drive power supply module can lead to an abnormal main drive voltage, causing the AC-DC power supply to shut down. Due to the lack of a corresponding backup drive mechanism, ensuring the entire rack operates without power loss requires extremely high efficiency in data center maintenance, necessitating timely replacement of faulty PSUs, resulting in high data center maintenance costs. This application's embodiment introduces an independent redundant drive power supply module. When the main drive voltage output by the drive power supply module is abnormal, the redundant drive power supply module outputs a backup drive voltage to drive the main output circuit to continue outputting the main output voltage, eliminating the need for immediate replacement of the faulty PSU and thus reducing data center maintenance costs.

[0050] Optionally, the main output circuit includes a drive selection circuit; the first input terminal of the drive selection circuit is connected to the output terminal of the drive power supply module to receive the main drive voltage; the second input terminal of the drive selection circuit is connected to the output terminal of the redundant drive power supply module to receive the backup drive voltage; the drive selection circuit is used to output the main drive voltage when the main drive voltage is normal, and to output the backup drive voltage when the main drive voltage is abnormal.

[0051] For example, the first and second input terminals of the drive selection circuit are independent of each other to achieve isolation between the main drive voltage and the backup drive voltage.

[0052] For example, the output of the drive selection circuit can be connected to the drive execution unit (such as a power switch, driver chip, etc.) of the main output circuit to output the selected main drive voltage or backup drive voltage to the drive execution unit, so as to provide it with a stable drive signal, and then drive the main output circuit to output the main output voltage.

[0053] Optionally, the drive selection circuit includes at least one diode for controlling the switching between the main drive voltage and the backup drive voltage; or the drive selection circuit includes at least one gate circuit for controlling the switching between the main drive voltage and the backup drive voltage.

[0054] Figure 2 This is a schematic diagram of the drive selection circuit provided in an embodiment of this application. Figure 2 As shown, the drive selection circuit provided in this application embodiment may include a first drive selection circuit 21, a second drive selection circuit 22, and a third drive selection circuit 23.

[0055] The first drive selection circuit includes diodes D1 and D2. When the main drive voltage is normal, diode D1 is on and diode D2 is off, and the first drive selection circuit outputs a main drive voltage with an amplitude of 12V. When the main drive voltage is abnormal, diode D1 is off and diode D2 is on, and the first drive selection circuit outputs a backup drive voltage with an amplitude of 12V. The 12V drive voltage Vcc1 is used to drive the power switching transistors in the PFC boost circuit.

[0056] The second drive selection circuit includes diodes D3 and D4. When the main drive voltage is normal, diode D3 is on and diode D4 is off, and the output voltage amplitude of the second drive selection circuit is the main drive voltage of 18V. When the main drive voltage is abnormal, diode D3 is off and diode D4 is on, and the output voltage amplitude of the second drive selection circuit is a backup drive voltage of 18V. The 18V drive voltage Vcc2 is used to drive the power switching transistors of the corresponding branch in the main output circuit.

[0057] The third drive selection circuit includes diodes D5 and D6. When the main drive voltage is normal, diode D5 conducts and diode D6 is cut off, and the output voltage amplitude of the third drive selection circuit is the main drive voltage of 12V. When the main drive voltage is abnormal, diode D5 is cut off and diode D6 conducts, and the output voltage amplitude of the third drive selection circuit is a backup drive voltage of 12V. The 12V drive voltage Vcc3 is used to drive the power switch of the auxiliary output voltage generation circuit to stabilize the output auxiliary voltage and supply power to other loads in the system.

[0058] For example, the drive selection circuit includes at least one gate circuit, which is used to control the switching between the main drive voltage and the backup drive voltage. Its specific implementation is similar to the implementation using diodes described above, and will not be repeated here.

[0059] Optionally, the drive power supply module includes a bridge rectifier circuit, a PFC boost circuit, and an auxiliary output circuit; the output terminal of the bridge rectifier circuit is connected to the input terminal of the PFC boost circuit; the PFC boost circuit is used to output the bus voltage; the input terminal of the auxiliary output circuit is connected to the output terminal of the PFC boost circuit, and is used to receive the bus voltage and generate the main drive voltage according to the bus voltage.

[0060] The specific connection methods of the bridge rectifier circuit, PFC boost circuit, and auxiliary output circuit are the same as those described above. Figure 1 Similar to the case in China, I will not repeat it here.

[0061] Optionally, the input terminal of the redundant drive power supply module is connected to the output terminal of the bridge rectifier circuit; or the input terminal of the redundant drive power supply module is connected to the input terminal of the bridge rectifier circuit.

[0062] In some embodiments, the input terminal of the redundant drive power supply module is connected to the output terminal of the bridge rectifier circuit to receive the rectified DC voltage output by the bridge rectifier circuit. In other embodiments, the input terminal of the redundant drive power supply module is connected to the input terminal of the bridge rectifier circuit to receive the input voltage of the bridge rectifier circuit. In still other embodiments, the input terminal of the redundant drive power supply module can be connected to the output terminal of the PFC boost circuit to receive the bus voltage output by the PFC boost circuit, generate a backup drive voltage for driving the main output circuit drive circuit based on the bus voltage, and output the backup drive voltage to the main output circuit, so that when the main drive voltage is abnormal, the main output circuit outputs the main output voltage under the drive of the backup drive voltage. This application does not limit the power supply method of the redundant drive power supply module; it can be determined according to the actual application requirements.

[0063] It is understood that, in this embodiment, the input terminal of the redundant drive power supply module can be selectively connected to either the output or input terminal of the bridge rectifier circuit. When the input terminal of the redundant drive power supply module is connected to the output terminal of the bridge rectifier circuit, the redundant drive power supply module receives the rectified DC voltage; when the input terminal of the redundant drive power supply module is connected to the input terminal of the bridge rectifier circuit, the redundant drive power supply module receives the input voltage (such as AC) and requires a built-in rectifier circuit to generate DC voltage. Both connection methods must ensure that the redundant drive power supply module can operate independently of the drive power supply module to improve system reliability.

[0064] Optionally, the auxiliary output circuit includes a primary isolation circuit of the main transformer, a primary drive circuit of the main transformer, and multiple sets of secondary drive circuits of the main transformer; the primary isolation circuit of the main transformer is magnetically coupled to the primary drive circuit of the main transformer and the multiple sets of secondary drive circuits of the main transformer, and is used to output the corresponding main drive voltage to the primary drive circuit of the main transformer and the multiple sets of secondary drive circuits of the main transformer respectively.

[0065] For example, the primary drive circuit of the main transformer outputs a main drive voltage with an amplitude of 12V, which is used to drive the power switching transistor in the PFC boost circuit.

[0066] For example, multiple sets of secondary drive circuits for the main transformer may include a first secondary drive circuit and a second secondary drive circuit for the main transformer. The first secondary drive circuit outputs a main drive voltage with an amplitude of 18V, used to drive the power switching transistor in the corresponding branch of the main output circuit; the second secondary drive circuit outputs a main drive voltage with an amplitude of 12V, used to drive the power switching transistor in the auxiliary output voltage generation circuit.

[0067] Optionally, the redundant drive power supply module includes a primary isolation circuit of the backup transformer, a primary drive circuit of the backup transformer, and multiple sets of secondary drive circuits of the backup transformer; the primary isolation circuit of the backup transformer is magnetically coupled to the primary drive circuit of the backup transformer and the multiple sets of secondary drive circuits of the backup transformer, and is used to output the corresponding backup drive voltage to the primary drive circuit of the backup transformer and the multiple sets of secondary drive circuits of the backup transformer respectively.

[0068] For example, the backup transformer primary drive circuit outputs a backup drive voltage with an amplitude of 12V, which is used to drive the power switching transistor in the PFC boost circuit when the main drive voltage is abnormal.

[0069] For example, the multiple sets of backup transformer secondary drive circuits may include a first backup transformer secondary drive circuit and a second backup transformer secondary drive circuit. The first backup transformer secondary drive circuit outputs a backup drive voltage with an amplitude of 18V, used to drive the power switch transistor in the corresponding branch of the main output circuit when the main drive voltage is abnormal. The second backup transformer secondary drive circuit outputs a backup drive voltage with an amplitude of 12V, used to drive the power switch transistor in the auxiliary output voltage generation circuit when the main drive voltage is abnormal.

[0070] Figure 3 Schematic diagram of the power supply multi-output fault isolation system provided in the embodiments of this application Figure 2 .like Figure 3 As shown, the power supply multi-output fault isolation system includes a drive power supply module 31 and a redundant drive power supply module 32. The drive power supply module 31 includes a bridge rectifier circuit 311, a PFC boost circuit 312, and an auxiliary output circuit 313.

[0071] like Figure 3As shown, the bridge rectifier circuit 311 includes diodes D7, D8, D9, and D10. Diodes D7, D8, D9, and D10 form a bridge rectifier for converting the input voltage (AC voltage) into a rectified DC voltage.

[0072] like Figure 3 As shown, the PFC boost circuit 312 includes an inductor L1, a diode D11, a power switch Q1, and a capacitor C1. One end of the inductor L1 is connected to the output terminal of the bridge rectifier circuit to receive the rectified DC voltage output from the bridge rectifier circuit. The other end of the inductor L1 is connected to the anode of the diode D11 and the drain of the power switch Q1. The cathode of the diode D11 is connected to one end of the capacitor C1 to form the output terminal of the PFC boost circuit, used to output the bus voltage. The other end of the capacitor C1 and the source of the power switch Q1 are both grounded. Specifically, when the power switch Q1 is turned on, the inductor L1 stores energy; when the power switch Q1 is turned off, the induced electromotive force of the inductor L1, superimposed on the rectified DC voltage, charges the capacitor C1 through the diode D11, boosting the rectified DC voltage to a stable high-voltage DC bus voltage.

[0073] like Figure 3 As shown, the auxiliary output circuit 313 includes inductors L2, L3, L4, and L5, diodes D12, D13, and D14, capacitors C2, C3, and C4, and power switch Q2. In this circuit, inductor L5 and power switch Q2 form the primary isolation circuit of the main transformer in the auxiliary output circuit. One end of inductor L5 serves as the input terminal of the primary isolation circuit of the main transformer, used to receive the bus voltage output from the PFC boost circuit. The other end of inductor L5 is connected to the drain of power switch Q2, and the source of power switch Q2 is grounded. Inductor L2, diode D12, and capacitor C2 form the primary drive circuit of the main transformer, which outputs a 12V main drive voltage after rectification and filtering, used to drive power switch Q1 in the PFC boost circuit. Inductor L3, diode D13, and capacitor C3 form the first secondary drive circuit of the main transformer, which outputs an 18V main drive voltage after rectification and filtering, used to drive the power switch in the corresponding branch of the main output circuit. Inductor L4, diode D14, and capacitor C4 form the second secondary drive circuit of the main transformer, which outputs a 12V main drive voltage after rectification and filtering, used to drive the power switch in the auxiliary output voltage generation circuit.

[0074] Specifically, in the primary isolation circuit of the main transformer, the bus voltage is converted into high-frequency pulses by the high-frequency conduction or cutoff of the power switch Q2. The high-frequency pulses are magnetically coupled to multiple secondary windings (i.e., inductors L2, L3, and L4) through the primary winding of the main transformer (i.e., inductor L5), thus achieving electrical isolation between the primary and secondary sides. The turns ratio of different secondary windings determines different output main drive voltage levels.

[0075] like Figure 3 As shown, the redundant drive power supply module 32 includes diodes D15, D16, D17, and D18, capacitors C5, C6, C7, and C8, inductors L6, L7, L8, and L9, and a power switch Q3. The anode of diode D15 serves as the input terminal of the redundant drive power supply module, receiving the rectified DC voltage from the bridge rectifier circuit. The cathode of diode D15 is connected to one end of capacitor C5 and one end of inductor L9, outputting a DC voltage to the primary isolation circuit of the backup transformer. Inductor L9 and power switch Q3 form the primary isolation circuit of the backup transformer. The other end of inductor L9 is connected to the drain of power switch Q3, and the source of power switch Q3 is grounded. Inductor L6, diode D16, and capacitor C6 form the primary drive circuit of the backup transformer, outputting a backup drive voltage with an amplitude of 12V after rectification and filtering. This backup drive voltage is used to drive the PFC when the main drive voltage output from the primary drive circuit of the main transformer is abnormal. The power switch Q1 in the boost circuit; inductor L7, diode D17 and capacitor C7 form the first secondary drive circuit of the backup transformer, which outputs a backup drive voltage with an amplitude of 18V after rectification and filtering. This backup drive voltage is used to drive the power switch in the corresponding branch of the main output circuit when the main drive voltage output from the first secondary drive circuit of the main transformer is abnormal; inductor L8, diode D18 and capacitor C8 form the second secondary drive circuit of the backup transformer, which outputs a backup drive voltage with an amplitude of 12V after rectification and filtering. This backup drive voltage is used to drive the power switch in the auxiliary output voltage generation circuit when the main drive voltage output from the second secondary drive circuit of the main transformer is abnormal.

[0076] Understandable, Figure 3 The redundant drive power supply module draws power from the rectified DC voltage. Alternatively, it can draw power directly from the input voltage (this method requires an internal rectifier circuit to convert AC to DC), or directly from the PFC boost bus voltage. All three power draw methods must ensure that the redundant drive power supply module can operate independently of the drive power supply module to improve system reliability.

[0077] In summary, the power supply multi-output fault isolation system provided in this application has the following beneficial effects:

[0078] 1) Compared to related technologies, the AC-DC power supply module of a PSU typically adopts a single-transformer multi-winding integrated scheme, with deep coupling between the drive circuit and the power circuit. This application's embodiment introduces an independent redundant drive power supply module, achieving decoupling between the drive circuit and the main power circuit. The drive power supply module and the redundant drive power supply module use dual independent power supplies, physically isolating drive circuit faults from main output circuit faults. This avoids the problem of the entire AC-DC power supply failing due to drive circuit faults, significantly improving the power supply reliability of the AC-DC power supply.

[0079] 2) The redundant drive power supply module is only used to provide drive voltage and does not undertake the main power output. It uses pure hardware circuit to realize the backup and switching of drive voltage without the need for additional controllers, which reduces the hardware complexity of the system and avoids the need for emergency operation and maintenance in case of drive failure, effectively reducing the operation and maintenance cost of the data center.

[0080] The following describes the specific implementation of the power multiple output fault isolation method provided in this application, taking the power multiple output fault isolation system described in the above embodiments as the execution subject and combining specific embodiments.

[0081] Figure 4 This is a flowchart illustrating a power supply multi-output fault isolation method provided in an embodiment of this application. Figure 4 As shown, a specific implementation of this power supply multi-output fault isolation method may include the following steps:

[0082] S401, check if the main drive voltage output by the drive power supply module is normal.

[0083] For example, in one possible implementation, in response to the PSU being powered on and operating normally, the system detects whether the main drive voltage output by the auxiliary output circuit in the drive power supply module is normal in order to determine whether there is a fault in the auxiliary output circuit and the PFC boost circuit. If the main drive voltage is normal, that is, there is no fault in the auxiliary output circuit and the PFC boost circuit, then step S402 is executed; if the main drive voltage is abnormal, that is, there is a fault in the auxiliary output circuit or the PFC boost circuit, then step S403 is executed.

[0084] S402 drives the main output circuit to output the main output voltage according to the main drive voltage.

[0085] The specific implementation method is similar to that described above, and will not be repeated here.

[0086] S403 drives the main output circuit to output the main output voltage based on the backup drive voltage output by the redundant drive power supply module.

[0087] The specific implementation method is similar to that described above, and will not be repeated here.

[0088] In this embodiment, the main drive voltage output by the drive power supply module is detected to ensure its normality. When the main drive voltage is normal, the main output circuit is driven to output the main output voltage based on the main drive voltage. When the main drive voltage is abnormal, the main output circuit is driven to output the main output voltage based on the backup drive voltage output by the redundant drive power supply module. This ensures continuous power supply to the main output circuit, achieves fault decoupling and isolation between the drive power supply module and the main output circuit, avoids power failure of the entire AC-DC power supply due to drive failure, and thus improves the reliability of the AC-DC power supply.

[0089] Optionally, during the process of driving the main output circuit to output the main output voltage based on the backup drive voltage output by the redundant drive power supply module, the power supply multi-output fault isolation method provided in this application embodiment further includes: in response to detecting that the main drive voltage has returned to normal, i.e., the auxiliary output circuit or PFC boost circuit has recovered from the fault, driving the main output circuit to output the main output voltage based on the main drive voltage, so as to seamlessly take over the drive voltage supply of the main output circuit after the auxiliary output circuit or PFC boost circuit has recovered from the fault. For example, when the main drive voltage is interrupted due to an over-temperature fault in the auxiliary output circuit, the redundant drive power supply module maintains the power supply to the main output circuit through the backup drive voltage; after the temperature of the auxiliary output circuit returns to normal and the main drive voltage stabilizes again, the drive selection circuit (such as a diode or gate circuit) automatically switches to standby and switches back to the main drive voltage as the drive source, thereby achieving seamless takeover of the drive voltage.

[0090] The following are embodiments of the apparatus described in this application, which can be used to execute the embodiments of the method described in this application. For details not disclosed in the apparatus embodiments of this application, please refer to the embodiments of the method described in this application.

[0091] This application also provides a computer program product, including a computer program that, when executed by a processor, implements the above-described method.

[0092] This application also provides a computer-readable storage medium storing computer-executable instructions, which, when executed by a processor, implement the above-described method.

[0093] The aforementioned readable storage medium can be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic storage, flash memory, magnetic disk, or optical disk. The readable storage medium can be any available medium accessible to a general-purpose or special-purpose computer.

[0094] An exemplary readable storage medium is coupled to a processor, enabling the processor to read information from and write information to the readable storage medium. Of course, the readable storage medium can also be a component of the processor. The processor and the readable storage medium can reside in an Application Specific Integrated Circuit (ASIC). Alternatively, the processor and the readable storage medium can exist as discrete components in the device.

[0095] The division of units is merely a logical functional division; in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be indirect coupling or communication connection through some interfaces, devices, or units, and may be electrical, mechanical, or other forms.

[0096] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0097] In addition, the functional units in the various embodiments of the present invention can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit.

[0098] If a function is implemented as a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this invention, or the part that contributes to the prior art, or a part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods of the various embodiments of this invention. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0099] Those skilled in the art will understand that all or part of the steps of the above-described method embodiments can be implemented by hardware related to program instructions. The aforementioned program can be stored in a computer-readable storage medium. When executed, the program performs the steps of the above-described method embodiments; and the aforementioned storage medium includes various media capable of storing program code, such as ROM, RAM, magnetic disks, or optical disks.

[0100] Finally, it should be noted that other embodiments of the invention will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. This invention is intended to cover any variations, uses, or adaptations of the invention that follow the general principles of the invention and include common knowledge or customary techniques in the art not disclosed herein, and is not limited to the precise structures described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of the invention is limited only by the appended claims.

Claims

1. A power supply multi-output fault isolation system, characterized in that, include: Main output circuit, drive power supply module and redundant drive power supply module; The drive power supply module is used to output the bus voltage and generate the main drive voltage according to the bus voltage, and provide the main drive voltage to the main output circuit; The redundant drive power supply module is used to generate a backup drive voltage based on the input voltage or the rectified DC voltage output by the drive power supply module, and to provide the backup drive voltage to the main output circuit. The main output circuit is used to output a main output voltage according to the main drive voltage when the main drive voltage is normal, and to output a main output voltage according to the backup drive voltage when the main drive voltage is abnormal.

2. The power supply multi-output fault isolation system according to claim 1, characterized in that, The main output circuit includes a drive selection circuit; The first input terminal of the drive selection circuit is connected to the output terminal of the drive power supply module to receive the main drive voltage; The second input terminal of the drive selection circuit is connected to the output terminal of the redundant drive power supply module to receive the backup drive voltage. The drive selection circuit is used to output the main drive voltage when the main drive voltage is normal, and to output the backup drive voltage when the main drive voltage is abnormal.

3. The power supply multi-output fault isolation system according to claim 2, characterized in that, The drive selection circuit includes at least one diode, which is used to control the switching between the main drive voltage and the backup drive voltage. Alternatively, the drive selection loop may include at least one gate circuit, which is used to control the switching between the main drive voltage and the backup drive voltage.

4. The power supply multi-output fault isolation system according to any one of claims 1 to 3, characterized in that, The drive power supply module includes a bridge rectifier circuit, a PFC boost circuit, and an auxiliary output circuit. The output terminal of the bridge rectifier circuit is connected to the input terminal of the PFC boost circuit. The PFC boost circuit is used to output the bus voltage; The input terminal of the auxiliary output circuit is connected to the output terminal of the PFC boost circuit, and is used to receive the bus voltage and generate the main drive voltage according to the bus voltage.

5. The power supply multi-output fault isolation system according to claim 4, characterized in that, The input terminal of the redundant drive power supply module is connected to the output terminal of the bridge rectifier circuit; or the input terminal of the redundant drive power supply module is connected to the input terminal of the bridge rectifier circuit.

6. The power supply multi-output fault isolation system according to claim 4, characterized in that, The auxiliary output circuit includes a primary isolation circuit of the main transformer, a primary drive circuit of the main transformer, and multiple sets of secondary drive circuits of the main transformer. The primary isolation circuit of the main transformer is magnetically coupled to the primary drive circuit of the main transformer and the multiple sets of secondary drive circuits of the main transformer, and is used to output the corresponding main drive voltage to the primary drive circuit of the main transformer and the multiple sets of secondary drive circuits of the main transformer respectively.

7. The power supply multi-output fault isolation system according to any one of claims 1 to 3, characterized in that, The redundant drive power supply module includes a primary isolation circuit of the backup transformer, a primary drive circuit of the backup transformer, and multiple sets of secondary drive circuits of the backup transformer. The primary isolation circuit of the backup transformer is magnetically coupled to the primary drive circuit of the backup transformer and the secondary drive circuits of the multiple sets of backup transformers, and is used to output corresponding backup drive voltages to the primary drive circuit of the backup transformer and the secondary drive circuits of the multiple sets of backup transformers respectively.

8. A method for fault isolation of multiple power outputs, characterized in that, The method, applied to a power supply multiple-output fault isolation system as described in any one of claims 1 to 7, comprises: Check if the main drive voltage output by the drive power supply module is normal; If the main drive voltage is normal, then the main output circuit is driven to output the main output voltage according to the main drive voltage; If the main drive voltage is abnormal, the main output circuit will be driven to output the main output voltage according to the backup drive voltage output by the redundant drive power supply module.

9. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores computer-executable instructions, which, when executed by a processor, are used to implement the power supply multiple-output fault isolation method as described in claim 8.

10. A computer program product, characterized in that, include: A computer program, when executed by a processor, implements the power supply multiple output fault isolation method as described in claim 8.

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