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- W2903512721 abstract "Due to the superior material properties, SiC mosfet is a promising candidate switching device for high power density and high efficiency power conversion system. The robustness of switching device under extreme temperature condition becomes a crucial factor to ensure power conversion system safely and continuously operating. In this paper, the temperature dependence of dynamic performance of 1.2-kV 4H-SiC power mosfets is systematically characterized over such wide temperature range of 90-493 K and compared with 1.2-kV Si IGBT by a layout optimized double pulse tester (DPT). The degradation of dynamic on-resistance related interface traps is analyzed specially and the energy loss caused by degradation is quantified at cryogenic temperatures. Besides, to validate the performance of SiC mosfet under safely and continuously operating conditions for cryogenic temperature application, a hard switched non-isolated dc-dc buck converter is designed and tested to estimate temperature dependence of conversion efficiency under temperature range of 90-290 K. Moreover, the further characterizations are conducted with gate resistance range of 2-20 Ω, load current range of 3-30 A, and converter output current of 5-22.5 A under different switching frequency (up to 150 kHz) to validate high power and high frequency application potential of SiC mosfet." @default.
- W2903512721 created "2018-12-11" @default.
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- W2903512721 date "2019-09-01" @default.
- W2903512721 modified "2023-10-18" @default.
- W2903512721 title "Temperature Dependence of Dynamic Performance Characterization of 1.2-kV SiC Power mosfets Compared With Si IGBTs for Wide Temperature Applications" @default.
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- W2903512721 doi "https://doi.org/10.1109/tpel.2018.2884966" @default.
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