| 摘要 |
PROBLEM TO BE SOLVED: To improve device efficiency by reducing the generation loss of a DC/DC converter device as a whole. SOLUTION: Cooling bodies 12, 13 are arranged at a semiconductor DC/AC conversion circuit 2 and a semiconductor rectifying circuit 4 that constitute the DC/DC converter device, respectively, and the temperature of the cooling body 13 is set higher than the temperature of the cooling body 12. By setting, for example, a thermal resistance value of the cooling body 13 higher than a thermal resistance value of the cooling body 12, the generation loss is reduced and the device efficiency of the DC/DC converter device is improved. COPYRIGHT: (C)2005,JPO&NCIPI
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