Power supply device and program product

By designing the order of switching switches in the power supply device, the problem that the semiconductor switch may be loaded in the disconnected state is solved, and the effect of suppressing the load when the disconnection is achieved.

CN119727384APending Publication Date: 2025-03-28MURATA MFG CO LTD
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Patent Information

Application Number
CN202411070881.4
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Priority Date
2023-09-27
Filing Date
2024-08-06
Publication Date
2025-03-28

AI Technical Summary

Technical Problem

In the power supply device described in Patent Document 1, when the semiconductor switch is switched to the off state when the DC-DC converter is operated, a load is applied to the switch.

Method used

A power supply device is designed, including an input terminal, an output terminal, a power conversion circuit, a first switch and a second switch, and a control unit. When the control unit cuts off the electrical connection between the input terminal and the output terminal, it switches the first switch to the off state and then switches the second switch to the off state.

Benefits of technology

When the electrical connection between the input terminal and the output terminal is cut off, the load applied to the switch can be suppressed, the circuit can be protected and overcurrent damage can be avoided.

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Abstract

The present invention provides a power supply device and a program product capable of suppressing a large load from being applied to a switch when an electrical connection between an input terminal and an output terminal is cut off. A power supply device (10) is provided with: an input terminal to which a DC power supply can be connected; an output terminal; a power conversion circuit (13); a first switch (21) disposed between the input terminal and the power conversion circuit (13); a second switch (22) disposed between the power conversion circuit (13) and the output terminal; and a control unit (40) capable of switching between an ON state and an OFF state of the first switch (21) and the second switch (22). When the electrical connection between the input terminal and the output terminal is cut off, the control unit (40) switches the first switch (21) to the OFF state and then switches the second switch (22) to the OFF state.
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