Switch control circuit

By integrating control modules, drive modules, transformer modules, and IGBT switching modules, the problems of high cost, large size, and poor reliability of vacuum high-voltage relays in high-voltage circuit control are solved, realizing a low-cost, small-size, and high-speed response switching control circuit design.

CN121979015APending Publication Date: 2026-05-05SHENZHEN SEPPO BIOTECHNOLOGY CO LTD
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Patent Information

Application Number
CN202511879354.2
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-12-12
Publication Date
2026-05-05

AI Technical Summary

Technical Problem

Existing vacuum high-voltage relays suffer from high cost, large size, poor reliability, and slow response speed in high-voltage circuit control, making it difficult to meet the requirements of lightweight, low cost, and high speed in electronic equipment.

Method used

By combining a control module, a drive module, a transformer module, a rectifier module, and an IGBT switching module, the switching on and off of the IGBT unit is controlled by coordinating signal outputs. Combined with the transformer module design using ferrite and copper foil coil windings, low cost, small size, and high reliability are achieved.

Benefits of technology

It achieves low-cost design and small-size integration, while possessing high reliability and high-speed response performance, improving the stability and reliability of circuit operation, and avoiding energy waste and equipment damage.

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Abstract

The invention provides a switch control circuit, and relates to the technical field of high-voltage circuit control. The switch control circuit is applied to a power supply system, the power supply system comprises a high-voltage direct-current power supply and electric equipment, and the switch control circuit comprises a control module, a driving module, a plurality of voltage transformation modules, a plurality of rectification modules and an IGBT switch module. The input end of the driving module is connected with the control module, the voltage transformation module is connected with the driving module, the rectification module is connected with the voltage transformation module, the input end of the IGBT switch module is connected with a high-voltage direct-current power supply, the output end of the IGBT switch module is connected with electric equipment, the IGBT switch module comprises a plurality of IGBT units which are sequentially connected in series, the IGBT units are connected with the rectification module, and the rectification module is connected with the control module. And the IGBT unit is used for controlling on-off of power supply of the high-voltage direct-current power supply to the electric equipment. On the basis that low-cost design and small-size integration are achieved, high-reliability operation and high-speed response performance are achieved at the same time.
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