Device for protecting a power component against voltage surges

摘要

A device for protecting against voltage surges a power semiconductor component having a collector, an emitter and a gate, the device including a protection circuit connected in parallel between the collector and the gate. The protection circuit has a main branch including at least two Zener diodes connected in series and a secondary branch including a capacitor and connected in parallel with at least one of the Zener diodes of the main branch. The protection circuit also has an additional branch including a resistor which is connected in parallel with the capacitor.