A method, circuit and apparatus for derating a switching device
CN114977750BActive Publication Date: 2026-08-28GOODWAY POWER TECHNOLOGY (GUANGDE) CO LTD
Patent Information
- Application Number
- CN202210537780.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2022-05-17
- Publication Date
- 2026-08-28
- Estimated Expiration
- 2042-05-17
AI Technical Summary
Technical Problem
上述现有技术，温度检测点距离高频开关管距离远，并且无法全覆盖所有开关管，同时温度检测芯片在高温下精度低
Benefits of technology
[0039]1、本发明实施例提供的降额技术方案无需使用温度检测器件，可获得开关器件的结温，精度高；
✦ Generated by Eureka AI based on patent content.
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Figure CN114977750B_ABST
Abstract
The application discloses a switching device derating method, circuit and device. The derating method comprises the following steps: collecting a first index value of a switching device; calculating a second index value associated with the junction temperature of the switching device according to the first index value; judging whether the second index value meets a derating condition; and performing a derating process on the switching device meeting the derating condition. The derating method provided by the embodiment of the application can obtain the junction temperature of the switching device without using a temperature detection device, and has high precision.
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Citation Information
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