Proceedings of the KIEE Conference (대한전기학회:학술대회논문집)

The Korean Institute of Electrical Engineers (대한전기학회)
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Primary side control of Flyback converter using sawtooth wave

톱니파를 이용한 플라이백 컨버터의 일차 측 제어

  • Nam, Sang-Guk (Korea Electrotechnology Research Institute (KERI)) ;
  • Kim, Ki-Hyun (Korea Electrotechnology Research Institute (KERI)) ;
  • Kim, Min-Sung (Department of Electronic Engineering, Changwon National University) ;
  • Seo, Kil-Soo (Korea Electrotechnology Research Institute (KERI)) ;
  • Kim, Nam-Kyun (Korea Electrotechnology Research Institute (KERI)) ;
  • Song, Han-Jung (Department of Nano Science & Engineering, Inje University)
  • Published : 2015.07.15
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Abstract

This paper presents methods to achieve and control accurate output voltage. PSR removed secondary output voltage sensing circuit, therefore standby power loss can be decreased. When sensing the auxiliary winding voltage, sensing must be done at accurate branch which has $V_O$ information. For this reason this paper presents the PSR sensing technique using sawtooth wave and peak detector. Circuit verification carried out with Spectre in Cadence corporation and Manga/Hynix $0.35{\mu}m$ 700V process.

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