Electrostatic discharge protection device comprising several thyristors
US7113377B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Apr 17, 2003 |
| Grant date | Sep 26, 2006 |
| Priority date | — |
| Expiry date | Nov 8, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10D89/713
Abstract
An electrostatic discharge protection device comprises several thyristors which are connected in parallel between two nodes of an electrical circuit. It also includes a control circuit having an output connected to the control trigger terminal input of each of the thyristors. In response to an abnormal variation in a voltage between the two nodes being detected, the control circuit initiates a triggering current on the output so as to trigger the thyristors to conduct current between the two nodes. Preferably, the thyristors are arranged in a semiconductor substrate so as to have low hold voltages and small geometrical dimensions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.