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Yasushige Mukunoki,Takeshi Horiguchi,Hiroshi Nakatake,Masaki Kuzumoto,Makoto Hagiwara,Hirofumi Akagi 전력전자학회 2019 ICPE(ISPE)논문집 Vol.2019 No.5
This paper describes a physical analysis of gate-source voltage (vGS) dependencies of parasitic capacitors of a discrete Silicon-Carbide (SiC) MOSFET. A new picture of depletion region that induces the parasitic capacitors is proposed. The proposed picture successfully explains the origins and the intrinsic relations of the vGS-dependencies of the parasitic capacitors. Subsequently, the effects of the vGS dependent models are considered via the detailed analysis of the switching waveforms, which clarifies their individual impacts on the switching waveforms.