Electrostatic discharge protection circuit

US8143700B2 · kind B2 · utility

Assignee

• SOFICS BVBA · BE

Inventors

• Pieter Vanysacker · Moere, BE
• Benjamin Van Camp · Brugge, BE
• Olivier Marichal · Sint-Niklaas, BE
• Wybo Geert · Evergem, BE
• Steven Thijs · Willebroek, BE
• Gerd Vermont · Ruiselede, BE

Key dates

• Filing date: Dec 29, 2008
• Grant date: Mar 27, 2012
• Expiry date: Oct 29, 2029

Classification

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

Abstract

The present invention provides an electrostatic discharge (ESD) protection circuit with a silicon controlled rectifier (SCR) having a plurality of SCR fingers (SCRs) with the advantages to couple the different fingers or SCRs to decrease the multi-triggering problem and to increase the ESD-performance of the circuit. Additionally, a boost circuit can be introduced or additionally multiple SCRs can be coupled inherent through a common base.