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- W3150200449 abstract "Thermal stress is one of the prime causes leading to power semiconductor device failure. Therefore, a clear and accurate understanding of power switches' thermal degradation process is critical for proper design, reliability analysis, and lifetime prediction of power converters. This paper proposes a new degradation setup for the reliability assessment of power FETs based on thermal equilibrium during mission profile characterization. During a practical degradation process of the FETs, equilibrium junction temperature, and R DS(ON) of the Device-Under-Test (DUT) are captured for post data processing to evaluate their Remaining-Useful-Lifetime (RUL). Mission profile tests with multiple load currents will be cycled until the device fails or the reliability parameters such as R DS(ON) and the equilibrium junction temperature exceed a specific threshold value. This is repeated with different FETs at other ambient temperatures. It is hence possible to test four FETs at a time with reduced power drawn from the source. A complete electro-thermal simulation model and analysis of a SiC-MOSFET under inductive load switching operation on an H-bridge testing circuit has been successfully implemented in LTspice. The operation and benefits of the proposed characterization process have been proven by simulation and preliminary experimental results." @default.
- W3150200449 created "2021-04-13" @default.
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- W3150200449 date "2020-12-16" @default.
- W3150200449 modified "2023-09-26" @default.
- W3150200449 title "Power FET Degradation Test based on Thermal Equilibrium during Mission-Profile Characterization" @default.
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- W3150200449 doi "https://doi.org/10.1109/pedes49360.2020.9379664" @default.
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