| 摘要 |
<P>PROBLEM TO BE SOLVED: To improve the trade-off characteristics between noise and switching loss occurring at the time of turn-off switching. <P>SOLUTION: When the semiconductor element is turned off, until a voltage between a collector and an emitter of the semiconductor element reaches a DC voltage applied between the collector and the emitter, the change ratio of the voltage between the collector and the emitter is increased, whereas after the voltage between the collector and the emitter of the semiconductor element reaches the DC voltage, the change ratio of the voltage between the collector and the emitter is decreased. <P>COPYRIGHT: (C)2013,JPO&INPIT |
