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ZVT 기술을 이용한 soft switching DC-DC Boost 컨버터에 관한 연구
김정래(J.R.Kim),김춘삼(C.S.Kim),이봉섭(B.S.Lee),박경수(K.S.Park) 전력전자학회 2000 전력전자학술대회 논문집 Vol.2000 No.11
Recently, DC-DC converters significantly increase the total losses as rising switching frequency. Traditional soft switching technique for reducing switching losses even increase voltage/current stress of switch. In this paper, Resonant circuit for soft switching is connected in parallel with power stage and only operates just before turn-on of the main switch. Therefore, This doesn't affect the total circuit operation. ZVT-PWM converter designed with 170- 260V input, 400V 5A outPut, and 100kHz switching frequency is tested respectively with 500W, 1kW, 1.5kW, and 2kW loads.