Design of control IC for multiphase interleaved buck converter with alternate phase-shedding

Ji Shiang Lee, Chun Yu Huang, Tsorng Juu Liang, Kai Hui Chen

研究成果: Conference contribution

4 引文 斯高帕斯(Scopus)

摘要

In this paper, a controller for a multiphase interleaved buck converter with alternate phase-shedding is realized. With phase-shedding control, the efficiency at low load condition is improved by turning-on appropriate number of phase(s), but the temperature on the active phase(s) is higher than the off phase(s) that cause the temperature unevenly distribution. To solve this problem, the alternate phase-shedding is implemented in the proposed controller. The phases take turns to provide the load current at low load condition to distribute power to each phase and share the same load as well as improve reliability. The proposed controller would implement interleaved control regardless the number of active phases. In addition, taking advantage of the application of high step-down ratio, the proposed control structure that input current is sensed to control each phase is adopted. The number of components and pins of controller can be reduced. This chip is fabricated with TSMC 0.25um CMOS high voltage mixed signal general purpose process and is tested with an input voltage of 12 V, output voltage of 1.2 V, and output power of 72 W three-phase buck converter to verify the feasibility.

原文English
主出版物標題9th International Conference on Power Electronics - ECCE Asia
主出版物子標題"Green World with Power Electronics", ICPE 2015-ECCE Asia
發行者Institute of Electrical and Electronics Engineers Inc.
頁面1025-1032
頁數8
ISBN(電子)9788957082546
DOIs
出版狀態Published - 2015 七月 27
事件9th International Conference on Power Electronics - ECCE Asia, ICPE 2015-ECCE Asia - Seoul, Korea, Republic of
持續時間: 2015 六月 12015 六月 5

出版系列

名字9th International Conference on Power Electronics - ECCE Asia: "Green World with Power Electronics", ICPE 2015-ECCE Asia

Other

Other9th International Conference on Power Electronics - ECCE Asia, ICPE 2015-ECCE Asia
國家/地區Korea, Republic of
城市Seoul
期間15-06-0115-06-05

All Science Journal Classification (ASJC) codes

  • 能源工程與電力技術
  • 電氣與電子工程

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