Patent ID: 8362557

Claim:
A semiconductor device, comprising: a source region near a working top surface of a semiconductor region; a drain region near the working top surface and laterally offset from the source region; a gate located above the working top surface and located laterally between the source and drain regions; and wherein the source region and the gate at least partially laterally overlap a body region near the working top surface; wherein the semiconductor region comprises a first conductivity type having a first doping profile; and wherein the body region comprises the first conductivity type having a second doping profile; wherein the source region comprises: a first portion having the first conductivity type having a third doping profile, a second portion having a second conductivity type having a fourth doping profile, and a third portion having the second conductivity type having a fifth doping profile; wherein the second portion is located laterally between the first and third portions and penetrates into the semiconductor region to a greater depth than the third portion but no more than the first portion; and wherein the lateral location of the third portion is determined at least in part using the lateral location of the gate.