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MOSFET와 IGBT를 이용한 DC/DC 컨버터의 효율 증대
권형남(H.N. Kwon),전윤석(Y.S. Jeon),반한식(H.S. Ban),최규하(G.H Choe),배영찬(J.H. Bae) 전력전자학회 2001 전력전자학술대회 논문집 Vol.2001 No.7
Recently, the demand of large capacity SMPS for industrial area is increasing. Full-bridge dc-dc converter with IGBT is most widely used for large capacity SMPS because IGBT has a low-conduction loss and large current capacity.<br/> But most large capacity Full-bridge dc-dc converter using IGBT has low operating frequency because of switching loss at IGBT especially at turn-off by current tail and it's cause of relatively big converter size.<br/> MOSFET has low switching losses has been widely used for high frequency SMPS but it has a problem to apply to large capacity SMPS because it has large conduction resistance causing large on-time losses.<br/> In this paper, for reduction losses at switching device, MOSFET is applied at parallel with IGBT in full-bridge dc/dc converter.