Patent ID: 9702925
Date: 2017-07-11
CPC Classifications: G01R,H01L

Claim:
1. A semiconductor device, comprising: a substrate having a first conductivity type; first electronic circuitry formed on a first major surface of the substrate; a first doped region in the substrate, wherein the first doped region has a second conductivity type opposite the first conductivity type, and the first doped region underlies the first electronic circuitry and is separated from the first major surface of the substrate by a first portion of the substrate; a first conductive contact formed between the first doped region and the first major surface of the substrate, the first conductive contact is in a first location of the first doped region; a fault detection module coupled to the first doped region through the first conductive contact; and a second doped region with the second conductivity type in the substrate, wherein the second doped region is between the first electronic circuitry and the first doped region, and the first doped region and the second doped region are separated from one another by a second portion of the substrate.