| 摘要 |
PROBLEM TO BE SOLVED: To utilize the resonance between a capacitor and an inductor to enhance conversion efficiency and suppress the voltage ripples of the capacitor and overcurrent in a DC/DC power conversion device that is equipped with multiple circuits, an inverter circuit and rectifying circuits, and utilizes charging/discharging of the capacitor. SOLUTION: Multiple circuits, the inverter circuit A1 for driving and the rectifying circuits A2, A3, are connected in series. LC series bodies LC12, LC13 of capacitors Cr12, Cr13 and inductors are disposed between the circuit A1 and the other circuits A2, A3 so that the resonance periods are equalized. MOSFET for short-circuiting for turning off the MOSFETs in the individual circuits A1 to A3 is provided. When too large (small) voltage of a capacitor Cr12, Cr13 is detected, a predetermined MOSFET is turned off to interrupt the charging/discharging path of the capacitor Cr12, Cr13. COPYRIGHT: (C)2009,JPO&INPIT
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