대한전기학회:학술대회논문집 (Proceedings of the KIEE Conference)

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

  • 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)
  • 발행 : 2015.07.15
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초록

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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