HTRB reliability test device and method for power device
By employing PWM technology and IGBT control circuit in the HTRB circuit, high-temperature and high-voltage simulation of power devices is achieved, solving the problem of inaccurate testing in existing technologies, improving testing efficiency and reliability, and shortening the R&D cycle.
CN115524595BActive Publication Date: 2026-07-10NARI LIANYAN SEMICON CO LTD +1
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- NARI LIANYAN SEMICON CO LTD
- Filing Date
- 2022-09-30
- Publication Date
- 2026-07-10
AI Technical Summary
Technical Problem
Existing technologies cannot effectively simulate the high temperature and high pressure conditions of power devices under actual operating conditions, resulting in inaccurate HTRB reliability testing and failing to meet the needs of practical applications.
Method used
PWM technology is used to control the power supply in the HTRB circuit. Through the IGBT control circuit and sampling protection circuit, the DSP digital processor generates PWM signals to control the IGBT control switch to turn on and off, simulating high temperature and high pressure conditions.
Benefits of technology
It improves the efficiency and reliability of HTRB reliability testing, can accurately simulate the actual operating conditions of power devices, and shortens the R&D cycle.
✦ Generated by Eureka AI based on patent content.
Smart Images
Figure CN115524595B_ABST
Abstract
The application discloses a kind of HTRB reliability test device and method of power device, including main test circuit, IGBT control circuit and sampling protection circuit, main test circuit includes the power device to be measured, leakage current detection resistance, the first voltmeter of connection leakage current detection resistance, IGBT control switch and voltage source, one end of sampling protection circuit is connected with first voltmeter, the other end of sampling protection circuit is connected with one end of IGBT control circuit, the other end of IGBT control circuit is connected with IGBT control switch;Through sampling protection circuit, the voltage of leakage current detection resistance connected with the power device to be measured is collected, according to the size of voltage, IGBT control driving signal is generated through IGBT control circuit, and then IGBT control switch is controlled to turn on or turn off, and HTRB reliability test is carried out.The application can simulate the actual working condition mode of power device, and realize more efficient and more reliable test.
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