Patent ID: 7511357

Claim:
A semiconductor power device comprising a Zener diode connected between a gate metal and a drain metal of said semiconductor power device for functioning as a gate-drain (GD) clamp diode wherein: said GD clamp diode having an avalanche voltage lower than a source/drain avalanche voltage of said semiconductor power device wherein said Zener diode is insulated from a doped region of said semiconductor power device for preventing a channeling effect; a Zener diode connected between a gate metal and a source metal of said semiconductor power device for functioning as a gate-source (GS) clamp diode having a lower breakdown voltage than a gate oxide rupture voltage of said semiconductor power device; and a gate-connection doped region in a polysilicon layer disposed between and connected to said GD clamp diode and said GS diode wherein said gate-connection doped region further connected to said gate metal.