Proceedings of the IEEK Conference (대한전자공학회:학술대회논문집)

The Institute of Electronics and Information Engineers (대한전자공학회)
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A Current-Mode DC-DC Buck Converter with PFM to Improve the Light-Load Efficiency

Light-load에서 고효율을 가지는 PFM 전류모드 DC-DC Buck 변환기

  • Ahn, Young-Kook (School of Electronic, Electrical, Control and Instrumentation Engineering Hanyang University) ;
  • Nam, Hyun-Seok (School of Electronic, Electrical, Control and Instrumentation Engineering Hanyang University) ;
  • Roh, Jeong-Jin (School of Electronic, Electrical, Control and Instrumentation Engineering Hanyang University)
  • 안영국 (한양대학교 전자전기제어계측공학과) ;
  • 남현석 (한양대학교 전자전기제어계측공학과) ;
  • 노정진 (한양대학교 전자전기제어계측공학과)
  • Published : 2008.06.18
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Abstract

This paper presents pulse-frequency modulation(PFM) to improve the light-load efficiency. The proposed circuit is designed by using the device parameter of standard $0.13{\mu}m$ CMOS process. The performance of proposed circuit is evaluated by HSPICE simulation Measured efficiency in a light-load is measured 78-90 % for 0.1 to 100mA output current.

Keywords