Switching Power Module for a Small-Sized Electric Power Source

소형 전원용 스위칭 파워 모듈

  • 김병철 (진주산업대학교 전자공학과)
  • Published : 2004.08.01


5 V/500 mA transless type power module was designed by using a semiconductor switching technique for a small-sized electric power source. It used voltage drop type chopper method, and is composed of switching circuit, control circuit, voltage detect circuit, and constant voltage circuit. The switching power module which is designed in this study, showed load regulation of 0.2 V, line regulation of 0.1 V, output ripple of 85 mVp-p, switching frequency of 64.7 kHz, maximum power efficiency of 58 %, and satisfied its reliability and EMC test.


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