Journal of the Korean Institute of Electrical and Electronic Material Engineers (한국전기전자재료학회논문지)

The Korean Institute of Electrical and Electronic Material Engineers (한국전기전자재료학회)
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Design of PWM IC with Standby Mode Control Function for SMPS

대기모드 기능을 내장한 전원 장치 제어용 PWM IC 설계

  • 박현일 (경상대학교 전자공학과) ;
  • 김형우 (한국전기연구원 고집적전원연구그룹) ;
  • 김기현 (한국전기연구원 고집적전원연구그룹) ;
  • 서길수 (한국전기연구원 고집적전원연구그룹) ;
  • 한석붕 (경상대학교 전자공학과)
  • Published : 2008.04.01
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Abstract

In this paper, we designed the off-line PWM(Pulse width modulation) control IC for flyback type power converter to reduce the standby power consumption. In normal state, this off-line PWM IC generates the output pulse with $40\sim60kHz$ frequency and duty ratio of $20\sim88%$. When SMPS operates in standby mode, this IC generates the output pulse with 33kHz frequency and duty ratio of 1 %. SPICE simulation was performed to verify the standby power consumption of the power converter with designed of-line PWM IC. Power converter with designed off-line PWM IC consumes less than 0.3W when it operates in standby mode condition.

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References

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