Patent ID: 10658360

Abstract:
On a front surface side of an n− semiconductor substrate, an emitter electrode and trench gates each including a p base layer, a trench, a gate oxide film and a gate electrode are provided in an IGBT region and a FWD region. Among p base layers each between adjacent trenches, p base layers having an n+ emitter region are the IGBT emitter region and the p base layers not having the n+ emitter region are the FWD anode region. A lateral width of an n+ cathode region is narrower than a lateral width of the FWD anode region. A difference of a lateral width of the FWD anode region and a lateral width of the n+ cathode region is 50 μm or more. Thus, a semiconductor device may be provided that reduces the forward voltage drop while suppressing waveform oscillation during reverse recovery and having soft recover characteristics.