Patent ID: 9608543
Date: 2017-03-28
CPC Classifications: H01L,H02M,H03K

Claim:
1. A DC to AC power converter including first and second IGBTs each provided with a gate, a collector and an emitter and a transformer having a primary connected across a parasitic inductance of the collector of the second IGBT and a secondary, the gate of the each IGBT is connected to a gate driver including a reference; the gate driver reference of the first IGBT being connected to a ground bus of the power converter while the gate driver reference of the second IGBT being connected to the collector of the first IGBT via the secondary of the transformer; the parasitic inductance of the emitter of the second IGBT being increased by the secondary of the transformer to allow the control to limit an overvoltage at turn off of the second IGBT.