Patent ID: 11888047
Assignee: MAXPOWER SEMICONDUCTOR, INC.
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A power semiconductor device, comprising:
a first and second group of laterally-gated transistors integrated on a single semiconductor die, each said laterally-gated transistor having a first-conductivity-type source region, and a gate electrode which is capacitively coupled to a body region to selectably form a lateral channel therein, and a vertically-extended conduction region connecting a drain region to a drain extension region which is adjacent to said lateral channel;
wherein the threshold voltages of said first group of laterally-gated transistors are lower than the threshold voltages of said second group of laterally-gated transistors;
wherein the vertically-extended conduction region of at least each said second laterally-gated transistor is provided by fixed electrostatic charges in the walls of a trenched field plate, which invert a portion of said body region; and
wherein the widths of said first group of laterally-gated transistors are narrower than the widths of said second group of laterally-gated transistors.