LLC resonant converter controller with novel light load control

Chun Hsu Yang, Tsorng Juu Liang, Kai Hui Chen, Ji Shiuan Li, Ji Shiang Lee

研究成果: Conference contribution

6 引文 斯高帕斯(Scopus)

摘要

LLC resonant converter is an attractive topology to achieve high power density with high efficiency. However, the high switching frequency and circulating current result the poor efficiency of a LLC resonant converter under light load condition. To improve efficiency further, a modified burst-mode control is implemented in the proposed controller. The switching frequency decreases gradually during burst-on time to reduce the number of switching cycles under the same output ripple. Moreover, in burst-on time, the first pulse drives the MOSFET at high side with limited pulse width to suppress the initial current in resonant tank. The last switching cycle in burst-on time must be complete to ensure that initial conditions of each burst cycle are the same. Consequently, the switching losses are reduced, and light-load efficiency is improved.

原文English
主出版物標題Proceedings - 2014 International Power Electronics and Application Conference and Exposition, IEEE PEAC 2014
發行者Institute of Electrical and Electronics Engineers Inc.
頁面131-135
頁數5
ISBN(電子)9781479967674
DOIs
出版狀態Published - 2014 二月 9
事件2014 International Power Electronics and Application Conference and Exposition, IEEE PEAC 2014 - Shanghai, China
持續時間: 2014 十一月 52014 十一月 8

出版系列

名字Proceedings - 2014 International Power Electronics and Application Conference and Exposition, IEEE PEAC 2014

Other

Other2014 International Power Electronics and Application Conference and Exposition, IEEE PEAC 2014
國家/地區China
城市Shanghai
期間14-11-0514-11-08

All Science Journal Classification (ASJC) codes

  • 電氣與電子工程
  • 能源工程與電力技術
  • 可再生能源、永續發展與環境

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