Primary-Side Controlled Flyback Converter with Propagation-Delay Compensation

Jui Hung Lai, Tsorng Juu Liang, Kai Hui Chen, Hsu Hsin-Chen, Guan Ting Peng

研究成果: Conference contribution

摘要

Primary-side regulation (PSR) flyback converter has advantages of compact size, lower cost, and less power loss on devices because secondary-side feedback circuit is needless. In general, PSR flyback converter uses current sensing resistor to sense primary-side current peak value, and auxiliary winding to detect output diode conduction period, then output current can be estimated. However, it exists error between the sensed value and the real value of primary-side current peak value because of the time delay between power switch turn-off instant and output diode conducting instant. In prior researches, the compensation method of primaryside current peak value is to detect the delay period and estimate the current error with assuming that primary-side current increases linearly, but parasitic capacitances of power switch let primary-side current change nonlinearly actually. The current error compensation can be achieved by detecting the sink current of the gate driver circuit. Finally, the output current control is implemented with digital controller TMS320F28335, and applied to an input voltage at 130 V, output current of 5 A, output voltage of 12 V, and output power of 60 W flyback converter to verify the feasibility of proposed compensation method.

原文English
主出版物標題2023 International Future Energy Electronics Conference, IFEEC 2023
發行者Institute of Electrical and Electronics Engineers Inc.
頁面146-150
頁數5
ISBN(電子)9798350339888
DOIs
出版狀態Published - 2023
事件6th International Future Energy Electronics Conference, IFEEC 2023 - Sydney, Australia
持續時間: 2023 11月 202023 11月 23

出版系列

名字2023 International Future Energy Electronics Conference, IFEEC 2023

Conference

Conference6th International Future Energy Electronics Conference, IFEEC 2023
國家/地區Australia
城市Sydney
期間23-11-2023-11-23

All Science Journal Classification (ASJC) codes

  • 能源工程與電力技術
  • 電氣與電子工程
  • 控制和優化
  • 儀器
  • 電腦網路與通信

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