High holding voltage electrostatic discharge protection device

US9041054B2 · kind B2 · utility

Assignee

• SOFICS BVBA · BE

Inventors

• Sven Van Wijmeersch · Gistel, BE
• Olivier Marichal · Sint-Niklaas, BE

Key dates

• Filing date: Feb 14, 2014
• Grant date: May 26, 2015
• Expiry date: Feb 14, 2034

Classification

• Technology area (CPC H): Electricity
• CPC primary: H10D89/713

Abstract

A high holding voltage (HV) electrostatic discharge (ESD) protection circuit comprises a silicon controlled rectifier (SCR) device and compensation regions located within the length between the anode and cathode (LAC) of the SCR device which increase the holding voltage of the SCR device. The compensation regions may introduce negative feedback mechanisms into the SCR device which may influence the loop gain of the SCR and cause it to reach regenerative feedback at a higher holding voltage.