Journal of IKEEE (전기전자학회논문지)

Institute of Korean Electrical and Electronics Engineers (한국전기전자학회)
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A Study on the Optimal Design of Planar Flyback Transformers suitable for Small-size and Low-profile

소형화 및 슬림형에 적합한 평면 플라이백 변압기의 최적 설계에 관한 연구

  • Na, Hae-Joong (Institute of industrial Technology, Yeungnam University) ;
  • Kim, Jong-Hae (School of Electronic and Electrical Engineering, Daegu Catholic University)
  • Received : 2020.08.31
  • Accepted : 2020.09.22
  • Published : 2020.09.30
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Abstract

This paper presents the optimal design of planar flyback transformer suitable for small-size and low-profile of AC to DC adapter for 10W tablet. This paper also proposes the injection winding transformer of Hybrid and Drum types capable of the winding method of automatic type and the reduction of transformer size and leakage inductance(Lk) compared to the conventional mass-production flyback transformer with the winding method of manual type. In particular, the injection winding transformer of Drum type proposed in this paper is constructed in a horizontal laying of its transformer to solve the connection problem of copper plate injection winding on the secondary side of the one of Hybrid type. The primary and secondary windings of the injection winding transformer of Hybrid and Drum types used the conventional winding and the copper plate injection winding, respectively. For the injection winding transformer of Hybrid and Drum types proposed in this paper, the optimal design of planar flyback transformer suitable for small-size and low-profile was carried out using Maxwell 2D and 3D tool.

본 논문에서는 10W급 Tablet용 AC to DC Adapter의 소형화 및 슬림형에 적합한 평면 Flyback 변압기 최적화 설계에 대해서 나타낸다. 또한 본 논문에서는 수동권선의 기존 양산 Flyback 변압기에 비해 자동권선, Trans 크기 저감 및 누설 인덕턴스(Lk) 저감이 가능한 Hybrid형 사출 권선 변압기와 Drum형 사출 권선 변압기를 제안한다. 특히 본 논문에서 제안한 Drum형 사출 권선 변압기는 Hybrid형 사출 권선 변압기 2차측의 동판 사출 권선 접속 문제를 해결하기 위하여 변압기를 수평으로 눕힌 형태로 구성하였다. 본 논문에서 제안한 Hybrid형 사출 권선 변압기와 Drum형 사출 권선 변압기의 1차측과 2차측 권선은 각각 기존 권선과 동판 사출 권선을 사용하였다. 본 논문에서 제안한 Hybrid형 사출 권선 변압기와 Drum형 사출권선 변압기에 대해 Maxwell 2D 및 3D Tool을 이용하여 소형화 및 슬림형에 적합한 평면 Flyback 변압기 최적화 설계를 수행하였다.

Keywords

References

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