Proceedings of the KIPE Conference (전력전자학회:학술대회논문집)
- 2001.07a
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- Pages.520-524
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- 2001
High Efficiency DC/DC converter using MOSFET and IGBT
MOSFET와 IGBT를 이용한 DC/DC 컨버터의 효율 증대
Abstract
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, But most large capacity Full-bridge do-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. 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. In this paper, for reduction losses at switching device, MOSFET is applied at parallel with IGBT in full-bridge dc/dc converter.
Keywords