Bilaterally controllable thyristor

US6078065A · kind A · utility

Assignee

• Asea Brown Boveri, S.A. · CH

Inventors

• Peter Streit · Widen, CH
• Kenneth H. Thomas · Oxford, US

Key dates

• Filing date: Mar 24, 1998
• Grant date: Jun 20, 2000
• Expiry date: Mar 24, 2018

Classification

• Technology area (CPC H): Electricity
• CPC primary: H10D18/80

Abstract

A specification is given of a bidirectionally controllable thyristor which is distinguished by improved decoupling between the two thyristor structures. In particular, the intention is that the switched-off structure cannot be triggered in an uncontrolled manner by undesirable migration of charge carriers. This is achieved by virtue of the fact that the degree of shorting of the cathode region increases toward the isolation region. In particular, this can be achieved by virtue of the fact that the density per unit area of the short-circuit regions tends to a maximum value toward the isolation region. The use of a linear, continuous short-circuit region running along the isolation region is particularly favorable. (FIG. 1).