JP-2026075229-A - Power supply module

JP2026075229AJP 2026075229 AJP2026075229 AJP 2026075229AJP-2026075229-A

Abstract

【assignment】 We provide a power supply module that achieves high efficiency regardless of the load size. [Solution] The transformer has a first primary winding and a second primary winding, and a first secondary winding and a second secondary winding; a primary side changeover switch that switches the connection method between the first primary winding and the second primary winding between series and parallel; a secondary side changeover switch that switches the connection method between the first secondary winding and the second secondary winding between series and parallel; an output current detection unit that detects the output current flowing through a load connected to the output side; and a transformer turns switching control unit that switches the primary side changeover switch and the secondary side changeover switch according to the measurement result of the output current detection unit. [Selection Diagram] Figure 1A

Inventors

門井涼
李ウェン

Assignees

株式会社日立製作所

Dates

Publication Date: 20260508
Application Date: 20241022

Claims (4)

A transformer having a first primary winding and a second primary winding, and a first secondary winding and a second secondary winding, A primary side changeover switch that switches the connection method between the first primary winding and the second primary winding between series and parallel, A secondary winding changeover switch that switches the connection method between the first secondary winding and the second secondary winding between series and parallel, An output current detection unit that detects the output current flowing through a load connected to the output side, A transformer turns switching control unit that switches the primary side changeover switch and the secondary side changeover switch according to the measurement result of the output current detection unit, A power supply module characterized by having the following features.
The power supply module according to claim 1, wherein the transformer turns switching control unit is connected in series when the measured value of the output current in the output current detection unit is less than or equal to a predetermined threshold, and when it exceeds the threshold, the connection method of the primary side changeover switch and the secondary side changeover switch is set to parallel. A power supply module characterized by the following features.
The power supply module according to claim 2, wherein the transformer turns switching control unit controls the connection method of the primary side changeover switch and the secondary side changeover switch to transition between a low load mode in which they are connected in series and a high load mode in which they are connected in parallel, The threshold value when transitioning from the low-load mode to the high-load mode and the threshold value when transitioning back to the low-load mode are different values. A power supply module characterized by the following features.
A power supply module according to any one of claims 1 to 3, A power supply module characterized in that the primary-side changeover switch and the secondary-side changeover switch are configured using relay elements, MOS switches, or transistor elements.

Description

This invention relates to a power supply module. As background technology to this field, there is Japanese Patent Publication No. 2004-38289 (Patent Document 1). Patent Document 1 describes "an information processing apparatus characterized by comprising: a power supply device including a plurality of power supply units, which outputs power to be supplied to each processor mounted on the information processing apparatus using these plurality of power supply units; and a control means for variably controlling the total number of power supply units to be operated among the plurality of power supply units according to the load amount to be driven by the power supply output from the power supply device" (Claim 1). Japanese Patent Publication No. 2004-38289 This figure shows an example configuration of a power supply module according to Embodiment 1 of the present invention.This figure shows an example configuration of a power supply module according to Embodiment 1 of the present invention.This figure shows an example configuration of a power supply module according to Embodiment 1 of the present invention.This figure shows the relationship between power efficiency and load current of a power supply module according to Embodiment 1 of the present invention.This flowchart shows the operation of the power supply module according to Embodiment 1 of the present invention. The embodiments of the present invention will be described below with reference to the drawings. The embodiments are illustrative examples for explaining the present invention, and have been omitted and simplified as appropriate for clarity of explanation. The present invention can also be implemented in various other forms. Unless otherwise specified, each component may be singular or plural. The positions, sizes, shapes, and ranges of the components shown in the drawings may not represent their actual positions, sizes, shapes, and ranges in order to facilitate understanding of the invention. Therefore, the present invention is not necessarily limited to the positions, sizes, shapes, and ranges disclosed in the drawings. In the examples, the processing performed by executing a program may be described. Here, the computer executes the program using a processor (e.g., CPU, GPU) and performs the processing defined by the program using memory resources (e.g., memory) and interface devices (e.g., communication ports). Therefore, the processor may be the main entity performing the processing by executing the program. Similarly, the main entity performing the processing by executing the program may be a controller, device, system, computer, or node having a processor. The main entity performing the processing by executing the program may be an arithmetic unit, and may include dedicated circuits that perform specific processing. Here, dedicated circuits include, for example, FPGAs (Field Programmable Gate Arrays), ASICs (Application Specific Integrated Circuits), CPLDs (Complex Programmable Logic Devices), etc. The program may be installed on the computer from the program source. The program source may be, for example, a program distribution server or a computer-readable storage medium. If the program source is a program distribution server, the program distribution server includes a processor and storage resources for storing the program to be distributed, and the processor of the program distribution server may distribute the program to other computers. Furthermore, in this embodiment, two or more programs may be implemented as a single program, or one program may be implemented as two or more programs.