METHOD FOR CONTROLLING MULTI-PHASE BOOSTING CONVERTER AND MULTI-PHASE BOOSTING CONVERTER

PROBLEM TO BE SOLVED: To solve the problem that volumes and weight of a system need to be increased in order to avoid a resonance phenomenon of a resonance circuit in a conventional multi-phase boosting converter.SOLUTION: A method for controlling a multi-phase boosting converter, in which a plurality of boosting circuits connected in parallel between an input terminal which is given with an input voltage and an output terminal from which an output voltage supplied to a load circuit is output are driven by a plurality of driving signals having the same frequencies, has the steps of: determining whether second frequencies are M times the resonance frequencies of a resonance circuit formed between the multi-phase boosting converter and the load circuit when switching frequencies of the plurality of driving signals from first frequencies to the second frequencies during driving N boosting circuits; and setting phase differences between the plurality of driving signals to a phase difference, at which a resonance phenomenon is avoided, determined according to the value of M, when the second frequencies are determined to be M times the resonance frequencies.SELECTED DRAWING: Figure 4 【課題】従来の多相昇圧コンバータでは、共振回路の共振現象を回避するためにシステムの体積及び重量が大きくなる問題があった。【解決手段】本発明の多相昇圧コンバータの制御方法は、入力電圧が与えられる入力端子と、負荷回路に供給する出力電圧が出力される出力端子と、の間に並列に接続された複数の昇圧回路を、同一周波数を有する複数の駆動信号により駆動する多相昇圧コンバータの制御方法であって、Ｎ個の前記昇圧回路を駆動中に、前記複数の駆動信号の周波数を第１の周波数から第２の周波数を切り替える際に、前記第２の周波数が前記多相昇圧コンバータと前記負荷回路との間に形成される共振回路の共振周波数のＭ倍であるかを判定するステップと、前記第２の周波数が前記共振周波数のＭ倍である場合、前記複数の駆動信号間の位相差を前記Ｍの値に応じて定まる共振現象を回避する位相差とするステップと、を有する。【選択図】図４