Latch-up robust PNP-triggered SCR-based devices
US8778743B2 · kind B2 · utility
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20Claims
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Key dates
| Filing date | Aug 17, 2012 |
| Grant date | Jul 15, 2014 |
| Priority date | — |
| Expiry date | Oct 20, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10D18/251
Abstract
An approach for providing a latch-up robust PNP-triggered SCR-based device is disclosed. Embodiments include providing a silicon control rectifier (SCR) region; providing a PNP region having a first n-well region proximate the SCR region, a first N+ region and a first P+ region in the first n-well region, and a second P+ region between the SCR region and the first n-well region; coupling the first N+ region and the first P+ region to a power rail; and coupling the second P+ region to a ground rail.
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