| 摘要 |
PROBLEM TO BE SOLVED: To provide a semiconductor device which can improve detection accuracy of overcurrent.SOLUTION: A semiconductor device comprises: a gate drive circuit 10 for generating a gate drive signal; a semiconductor element having a first gate to which the gate drive signal is applied; a current detection element having a second gate; a correction circuit 16 for applying voltage to the second gate on receipt of the gate drive signal; and a protection circuit 17 which drops voltage of the gate drive signal or shuts down the gate drive circuit when emitter current of the current detection element becomes larger than a predetermined value. During a mirror period, the correction circuit applies to the second gate, voltage lower than voltage applied to the first gate.SELECTED DRAWING: Figure 1 |
