반도체디스플레이기술학회지 (Journal of the Semiconductor & Display Technology)

한국반도체디스플레이기술학회 (The Korean Society Of Semiconductor & Display Technology)
권호 표지

토템폴 브리지리스 PFC에서 동기정류 스위치의 효율 영향에 관한 연구

A Study on Influence of Synchronous Rectification Switch on Efficiency in Totem Pole Bridgeless PFC

  • 유정상 (청주대학교 전자공학과) ;
  • 안태영 (청주대학교 전자공학과)
  • Yoo, Jeong Sang (Department of Electronics Engineering, Cheongju University) ;
  • Ahn, Tae Young (Department of Electronics Engineering, Cheongju University)
  • 투고 : 2021.11.24
  • 심사 : 2021.12.14
  • 발행 : 2021.12.31
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초록

In this paper, a totem pole PFC was structured in two methods with FET and diode for low-speed switch while GaN FET was used for high-speed switch. Internal power loss, power conversion efficiency and steady-state characteristics of the two methods were compared in the totem pole bridgeless PFC circuit which is widely applied in large-capacity and high-efficiency switching rectifier of 500W or more. In order to compare and confirm the steady-state characteristics under equal conditions, a 2kW class totem pole bridgeless PFC was constructed and the experimental results were analyzed. From the experimental results, it was confirmed that the low-speed switch operation has a large difference in efficiency due to the internal conduction loss of the low-speed switch at a low input voltage. Especially, input power factor and load characteristic showed no difference regardless of the low-speed switch operation.

키워드

과제정보

이 논문은 2020~2021년도 청주대학교 연구장학 지원에 의한 것임.

참고문헌

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