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논문 기본 정보

저자정보
(Kumoh National Institute of Technology) (Pusan National University) (Pusan National University) (Pusan National University) (Pusan National University) (Pusan National University)
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대한전기학회 전기학회논문지 전기학회논문지 제74권 제5호
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    초록·키워드

    We propose 1.2 kV Silicon Carbide (SiC) metal-oxide-semiconductor field-effect transistors (MOSFETs) integrating internal Schottky barrier diodes (SBDs) on the JFET region. The internal SBDs of 1.2 kV SiC MOSFETs have robust switching performance by reducing Miller Pleteau (Qgd) through the wide depletion region formed in the SBD area and by lowering the forward voltage drops (VF) due to the fast operation of integration SBDs. We analyzed the reduced Qgd and forward voltage drop (VF) of the proposed structure compared to the conventional MOSFET and dummy gate MOSFET by optimizing the width of Schottky metal (WSchottky). Additionally, we evaluate the electrical characteristics including on-resistance (Ron), threshold voltage (Vth), breakdown voltage (BV), VF, turn-on loss (Eon) and turn-off (Eoff) for each structures. Our results demonstrate that the switching loss is significantly reduced by the integration of internal SBDs within 1.2 kV SiC MOSFETs.

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      UCI(KEPA) : I410-151-25-02-093097396