IC design of primary-side control for flyback converter

Ying Ting Lin, Tsorng-Juu Liang, Kai Hui Chen

Research output: Chapter in Book/Report/Conference proceedingConference contribution

25 Citations (Scopus)

Abstract

In this paper, a primary-side control integrated circuits for single stage AC-DC flyback converter is realized. With the primary-side control, the system area and cost can be reduced. The proposed controller samples the feedback voltage on the auxiliary winding, which is proportional to the output voltage plus the turn-on voltage of the output diode. A simple knee point detector is adopted to ensure the sampling is near the instant when the inductor current is zero. Thus, the feedback voltage is more accurate under various load conditions because the diode voltage is not affected by the diode current. Since the auxiliary winding voltage can not accurately reflect the output voltage under low input voltage condition, the duty ratio is kept as constant under this condition. Thus, good load regulation can be achieved. Finally, the chip is integrated with TSMC 0.25 urn CMOS high voltage mixed signal general purpose process.

Original languageEnglish
Title of host publication1st International Future Energy Electronics Conference, IFEEC 2013
PublisherIEEE Computer Society
Pages449-453
Number of pages5
ISBN (Print)9781479900718
Publication statusPublished - 2013 Jan 1
Event1st International Future Energy Electronics Conference, IFEEC 2013 - Tainan, Taiwan
Duration: 2013 Nov 32013 Nov 6

Publication series

Name1st International Future Energy Electronics Conference, IFEEC 2013

Other

Other1st International Future Energy Electronics Conference, IFEEC 2013
CountryTaiwan
CityTainan
Period13-11-0313-11-06

All Science Journal Classification (ASJC) codes

  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering

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  • Cite this

    Lin, Y. T., Liang, T-J., & Chen, K. H. (2013). IC design of primary-side control for flyback converter. In 1st International Future Energy Electronics Conference, IFEEC 2013 (pp. 449-453). [6687548] (1st International Future Energy Electronics Conference, IFEEC 2013). IEEE Computer Society.