Power device drive interface circuit and bidirectional current protection control system

By designing a power device drive interface circuit, the two output levels of the control module are integrated into one output, solving the problem of difficulty in controlling power devices with only one control pole in the existing technology, and achieving higher compatibility and versatility.

CN224459777UActive Publication Date: 2026-07-03SHANGHAI YUECHENXIN SEMICONDUCTOR TECHNOLOGY CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
SHANGHAI YUECHENXIN SEMICONDUCTOR TECHNOLOGY CO LTD
Filing Date
2025-08-06
Publication Date
2026-07-03

AI Technical Summary

Technical Problem

Existing control systems are unable to effectively control power devices with bidirectional current protection, especially those with only one control electrode, resulting in low versatility and compatibility.

Method used

A power device drive interface circuit was designed. By setting up a first, second, and third switch module and a logic operation module, the two output levels of the control module are integrated into one output, thereby realizing the control of a power device with a control electrode. The conduction state of the power device is changed by using the on and off states of the switch module.

Benefits of technology

This improves the compatibility and versatility of the control system, enabling it to adapt to power devices with different structures and achieve effective control of power devices with a single control pole.

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    Figure CN224459777U_ABST
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Abstract

This utility model discloses a power device drive interface circuit and a bidirectional current protection control system. The circuit includes a first switch module, a second switch module, a logic operation module, and a third switch module. The first input terminals of the first switch module, the second switch module, and the logic operation module are all connected to the first input terminal of the circuit. The second input terminals of the first switch module, the logic operation module, and the third switch module are all connected to the second input terminal of the circuit. The second and third switch modules are both connected to the logic operation module. The first switch module is connected to a power supply voltage. The second switch module is connected to the first terminal of the power device, and the third switch module is connected to the second terminal of the power device. The output terminals of the first, second, and third switch modules are all connected to the output terminal of the circuit. This utility model improves the versatility and compatibility of the control system.
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