| 摘要 |
<P>PROBLEM TO BE SOLVED: To exactly accurately a short-circuit protection by correcting a trip-level variation when performing an overcurrent protection. <P>SOLUTION: The device comprises: a semiconductor switching element (2); a current detection means (Rs) that detects the current flowing in this semiconductor switching element; an overcurrent protection means (3) that stops the operation of the semiconductor switching element when a detection signal from the current detection means exceeds a predetermined trip-level; and a characteristic correction circuit (5) that corrects the trip-level. The trip-level variation due to dispersion of the current detection means is corrected by the characteristic correction means. <P>COPYRIGHT: (C)2006,JPO&NCIPI |
