Advantages of Temperature-stable Ron of SiC DioMOS in Practical Applications

Conference: PCIM Asia 2015 - International Exhibition and Conference for Power Electronics, Intelligent Motion, Renewable Energy and Energy Management
06/24/2015 - 06/26/2015 at Shanghai, China

Proceedings: PCIM Asia 2015

Pages: 7Language: englishTyp: PDF

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Nakata, Hideki; Sawada, Kazuyuki; Watanabe, Keisuke; Usui, Ryosuke; Ueda, Tetsuzo; Fujii, Eiji (Panasonic Corporation, Japan)

This paper describes a feature of a SiC DioMOS which has low on-state resistance at elevated temperature. The DioMOS is the SiC MOSFET which also works as an antiparallel diode by utilizing an n-type epitaxial channel under the MOS gate for the reverse conduction path. The device structure of the DioMOS, temperature dependence of both the on-state resistance and forward voltage of the antiparallel diode are described. A conduction loss analysis and test results clarify the benefit of the DioMOS which has lower on-state resistance at elevated temperature. Parallel connection can be operated without thermal runaways as a result of device temperature by thermal photograph.