Patent ID: 11075291

Abstract:
According to an embodiment of a semiconductor device, the device includes a semiconductor substrate having a transistor region and a diode region. The transistor region includes a plurality of IGBT cells, and a charge carrier compensation region configured to expel or admit drift zone minority charge carriers based on an on-state or an off-state of the IGBT cells. The diode region includes a plurality of diode cells. An isolation structure is provided between the transistor region and the diode region. The isolation structure includes a first trench extending lengthwise along at least part of a periphery of the diode region and a second trench interposed between the first trench and the transistor region. The charge carrier compensation region extends to the second trench of the isolation structure but not the first trench such that the charge carrier compensation region is electrically isolated from an anode potential of the diode region.