Proceedings of the KIEE Conference (대한전기학회:학술대회논문집)

The Korean Institute of Electrical Engineers (대한전기학회)
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Analysis of resonant characteristics in Half-Bridge Converter using SMZ method

SMZ 하프브리지 컨버터의 공진특성 분석

  • Yeon, Jae-Eul (Dept. of Electrical Engineering Hoseo University) ;
  • Jang, Do-Hyun (Dept. of Electrical Engineering Hoseo University) ;
  • Kim, Hee-Jun (School of Electrical engineering & Computer Science Hanyang University)
  • 연재을 (호서대학교 전기공학과) ;
  • 장도현 (호서대학교 전기공학과) ;
  • 김희준 (한양대학교 전자.컴퓨터 공학부)
  • Published : 2001.04.19
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Abstract

The SMZ half-bridge converter uses the resonance between the inductance of transformer and the resonant capacitances to transfer the input power to the load. In addition to this kind of characteristic of the converter, there are some features such as the capability of soft switching operation, a lower switching loss, and a higher power density in the converter. However in the low-voltage and high-output current applications of the converter, the extremely increased output ripple voltage prevents the converter from normal operation. In order to overcome the drawback of the converter, adding the output filter inductor to the converter, the converter shows the completely different resonant characteristics. In this paper, We analyzed the resonant characteristics of the SMZ converter with the output filter inductor and investigated what the analyzed results affect the converter operation. The experiment of a I50W prototype SMZ converter with 5V output and 310V input is carried out to verity the validity of the analyzed results.

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