| 摘要 |
PROBLEM TO BE SOLVED: To attain high power conversion efficiency and size and weight reduction for a circuit. SOLUTION: For the constitution of a combined resonance switching converter, provided with a voltage resonance converter on the primary side and a series resonance circuit on the secondary side, an active clamping circuit is provided on the primary side to clamp a parallel resonance voltage pulse generated on both ends of the primary parallel resonance capacitor, thereby restraining its level. It is thus possible to select a low-pressure product for the withstand pressure of respective elements, such as a switching element used in a power circuit and the primary parallel resonance capacitor.
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