MOS short circuit identification protection circuit
CN224537781UActive Publication Date: 2026-07-21苏州星德胜智能电气有限公司
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Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 苏州星德胜智能电气有限公司
- Filing Date
- 2025-07-14
- Publication Date
- 2026-07-21
AI Technical Summary
Technical Problem
MOSFETs may short-circuit on the circuit board, causing damage to other chips or circuit modules. Existing technology lacks effective identification and protection measures.
Method used
Design a short-circuit identification and protection circuit for MOSFETs. The circuit detects current through resistor RS1, generates an interrupt signal using transistor Q2 and capacitor C1, and controls a relay module via a microcontroller to switch MOSFET Q4. Combined with a jumper, the faulty MOSFET Q3 is isolated, providing battery charging protection.
Benefits of technology
It achieves reliable identification and protection against MOSFET short circuits, extends circuit life, provides battery charging protection, and prevents current damage in case of misconnection.
✦ Generated by Eureka AI based on patent content.
Smart Images
Figure CN224537781U_ABST
Abstract
The utility model relates to technical field of hardware circuit board circuit structure, concretely relates to a MOS pipe short circuit identification protection circuit, and technical solution main points include the identification circuit between input and the source electrode s of MOS pipe Q3 is connected, identification circuit protection resistance RS1, resistance R1, resistance R2, capacitor C1, triode Q2 and singlechip, the series connection between input and MOS pipe Q1 on resistance RS1, triode Q2's emitting electrode connects input, capacitor C2 one end and resistance R1 one end, triode Q2's base connects capacitor C2 other end, resistance R1 other end and resistance R2 one end, resistance R2 other end connects the joint between resistance RS1 and MOS pipe Q3, triode Q2's collector connects singlechip one pin, the utility model discloses through identification circuit, carries out short circuit detection and identification to MOS pipe, in order to facilitate circuit protection.
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