並列数自動制御型降圧コンバータに関する研究

カテゴリ: 部門大会

論文No: ES1-2

グループ名: 【C】平成26年電気学会電子・情報・システム部門大会講演論文集

発行日: 2014/09/03

タイトル(英語): Multiphase DC-DC Converter by Changing Automatically the Number of Phases

著者名: 三次 将太(東京理科大学),兵庫 明(東京理科大学),松浦 達治(東京理科大学)

著者名(英語): Shota Mitsugi(Tokyo University of Science),Akira Hyogo(Tokyo University of Science),Tatsuji Matsuura(Tokyo University of Science)

キーワード: 並列型降圧コンバータ|並列数自動制御|Multiphase Back Converter|Dynamically adjusts the number of Phases

要約(日本語): Recently, output current range of automotive back converter is a wide area 0-200A. Multiphase buck converter is designed with a high efficiency at heavy loads. However, the output current of buck converter do not only work at heavy loads at all times for load changes. Therefore, it is necessary to consider the efficiency at light load. In order to maintain the high efficiency, there is a method that dynamically adjusts the number of phases according to load conditions. This approach induces a voltage disturbance due to current redistribution among phases. In this paper we propose a control method for distributing the current slowly to each phase in order to maintain a stable output voltage.

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