整流デッドタイムを有する10MHz級零電圧スイッチング電流共振形コンバータ
1997 年 117 巻 2 号 p. 140-147
詳細
1997 年 117 巻 2 号 p. 140-147
A novel zero-voltage-switching current resonant converter is presented. The Rectifiers' Deadtime Technique proposed in this paper enables this converter to achieve zero-voltage-switching on all semiconductor devices including rectifier diodes in any load range and to operate from full load to no load within a high and narrow frequency range. The circuit operation is analyzed and it is verified experimentally by two converters designed for 1MHz and 10MHz switching frequency operation. In the experiments, the zero-voltage-switching is achieved in even light and no load and the maximum efficiency of 93.5% at the 1MHz-class converter and that of 85.2% at the 10MHz-class is realized.
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