| 摘要 |
<p>PROBLEM TO BE SOLVED: To reduce generation of noise caused by an inrush surge current in turning-on a resonance switch and a loss in turning-on the resonance switch in a DC-DC converter.SOLUTION: An inrush surge current suppression reactor is provided in a closed circuit formed from a snubber circuit and a resonance circuit, and inductance utilized for a resonant operation is partially charged with leakage inductance of a transformer and inductance of the inrush surge current suppression reactor. A ratio of the inductance of the inrush surge suppression reactor with respect to a sum (resonance inductance) of the leakage inductance of the transformer and the inductance of the inrush surge current suppression reactor is determined to reduce a turn-on loss of a resonance switch within allowable voltage resistance values of the resonance switch, thereby suppressing an inrush surge current.</p> |
