Journal of the Semiconductor & Display Technology (반도체디스플레이기술학회지)

The Korean Society Of Semiconductor & Display Technology (한국반도체디스플레이기술학회)
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A Study on Output Voltage Stabilization of 20W Class Multi-output QR Flyback Converter for Auxiliary Power

20W급 보조전원용 다출력 QR 플라이백 컨버터의 출력전압 안정화에 관한 연구

  • Yoo, Jeong Sang (Department of Electronic Engineering, Cheongju University) ;
  • Gil, Yong Man (Department of Electronic Engineering, Cheongju University) ;
  • Kim, Hyun Bae (Department of Electronic Engineering, Cheongju University) ;
  • Ahn, Tae Young (Department of Electronic Engineering, Cheongju University)
  • 유정상 (청주대학교 전자공학과) ;
  • 길용만 (청주대학교 전자공학과) ;
  • 김현배 (청주대학교 전자공학과) ;
  • 안태영 (청주대학교 전자공학과)
  • Received : 2021.09.07
  • Accepted : 2021.09.16
  • Published : 2021.09.30
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Abstract

In this paper, a 20W class multi-output QR flyback converter for auxiliary power supply was designed to stabilize 4 output voltages, and the efficiency and load characteristics were compared and analyzed. It was checked if each output affects other output characteristics through experiment. As a result, the experimental circuit reached a high efficiency of 82.5% or more at a load power of over 20W, and the maximum power loss was 2.6W. Consequently, it was confirmed that all of 4 output voltages of the multi-output QR flyback converter constructed in this paper were stabilized within 0.5% in full-load range, and each output was independently controlled in an electrically isolated state.

Keywords

Acknowledgement

본 연구는 2021년도 산업통상자원부의 재원으로 한국에너지기술평가원(KETEP)의 지원을 받아 수행한 연구과제입니다(No. 20192010106690).

References

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