Patent ID: 9659901
Date: 2017-05-23
CPC Classifications: H01L

Claim:
1. A semiconductor device comprising: a semiconductor layer including a main insulated-gate bipolar transistor (IGBT) cell and a sense IGBT cell connected in parallel to each other; a first resistance portion having a first resistance value formed using a gate wiring portion of the sense IGBT cell and a second resistance portion having a second resistance value higher than the first resistance value; a gate wiring electrically connected through mutually different channels to the first resistance portion and the second resistance portion; a first diode provided between the gate wiring and the first resistance portion; a second diode provided between the gate wiring and the second resistance portion in a manner oriented reversely to the first diode; an emitter electrode disposed on the semiconductor layer, electrically connected to an emitter of the main IGBT cell; and a sense emitter electrode disposed on the semiconductor layer, electrically connected to an emitter of the sense IGBT cell.