Patent ID: 11949025
Assignee: STMICROELECTRONICS S.R.L.
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A vertical-conduction electronic power device, comprising:
a body of wide band gap semiconductor, having a first conductivity type and a surface, the body including:
a drift region; and

a plurality of first metal anode regions on the surface;
a second metal anode region on the first metal anode region and on the surface;
a plurality of first implanted regions of a second conductivity type, extending into the drift region from the surface; and
a plurality of first Schottky diodes, each having, at equilibrium, a first Schottky barrier height at a plurality of first interfaces between the surface at the drift region and the plurality of first metal anode regions; and
a plurality of second Schottky diodes, each having, at equilibrium, a second Schottky barrier height that is different from the first Schottky barrier height, the plurality of second Schottky diodes being at a plurality of second interfaces between the surface of the drift region and the second metal anode region;
a plurality of ohmic contacts, each positioned in one of the plurality of first implanted regions.