| 摘要 |
PROBLEM TO BE SOLVED: To provide a DC-DC converter device that allows achieving high output and downsizing even if a high-capacity capacitor element is mounted, and is excellent in vibration resistance and shock resistance.SOLUTION: A main transformer 104, a low-voltage circuit board 107, and a capacitor module 10 are housed in a case member 101. In a capacitor case 11, a smoothing capacitor element 12, a capacitor element 13 for a noise filter, and a resonant capacitor element 14 are housed. On an outer peripheral side wall of the capacitor case 11, a high-voltage circuit board 40 is attached with a state that is substantially vertically raised with respect to the bottom of the capacitor case 11, and the high-voltage circuit board 40 is provided over power semiconductor modules 35 and 36 and the capacitor case 11. |
