대한전기학회논문지:전기기기및에너지변환시스템부문B (The Transactions of the Korean Institute of Electrical Engineers B)

대한전기학회 (The Korean Institute of Electrical Engineers)
권호 표지

강압형과 하프 브리지 직렬형 DC-DC 컨버터

Buck and Half Bridge Series DC-DC Converter

  • 발행 : 2005.12.01
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초록

We considered of the buck and half bridge series DC-DC converter. It has good applications in areas with low voltage/high current, wide input voltage. The buck converter ratings and the half bridge converter ratings are $36\~72V$ input and 22V/5A output, $19\~24V$ input and 3.3V/30A output, respectively. Developed the buck and half Bridge series DC-DC converter ratings are of $36\~72V$ input and 3.3V/30A output. The buck converter is operated with zero voltage switching process to reduce the switching losses. The $80.1\%\~97.6\%$ of the efficiency is measured at $18.4{\mu}H$ output filter inductance of buck converter. In the half bridge converter, the $86\%\~96.4\%$ efficiency is measured at 150kHz switching frequency with PQI core. In the case of synchronized the buck and half bridge DC-DC converter, the measured efficiency is higher than that of the unsynchronized converter. In the synchronized converter, the maximum efficiency is measured up to $92.3\%$ with PQI core at 150kHz. 7A output.

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참고문헌

  1. P. Alou, J. Oliver, J.A. Cobos, O. Garcia, J. Uceda, 'Buck+Half Bridge(d=50%) Topology Applied to very Low Voltage Power Converter', IEEE Applied Power Electronics Conference(APEC'01),2001 https://doi.org/10.1109/APEC.2001.912449
  2. Martin F. Schlecht 'High Efficiency Power circuit' US Patent Number : 5,999,417
  3. J.A. cobos, O. Garcia, J. Uceda, F. Aldana, 'Optimizied Synchronous Rectification srage for Low Output Voltage DC/DC Converter', IEEE Applied Power Electronics Conference(APEC'94),1994
  4. 박남진, 김창선, 김태식, 임범선, 우승훈, '벅+하프 브리지 컨버터의 출력 인덕턴스 값과 스위칭 주파수, 변압기 코어 형태에 따른 효율 특성', 전력전자학회 하계학술대회 논문집(1), pp.62-65, 2003.7. 14-17
  5. 박남진, 김창선, 김태식, 임범선, 우승훈, '벅+하프 브리지 컨버터의 효율 특성 고찰', 대한전기학회 하계학술대회 논문집(B), pp.1229-1231, 2003.7.21-23