Snapback clamps for ESD protection with voltage limited, centralized triggering scheme
US11056879B2 · kind B2 · utility
1Cited by
17References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 12, 2019 |
| Grant date | Jul 6, 2021 |
| Priority date | — |
| Expiry date | Oct 8, 2039 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02H9/041
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An apparatus for electrostatic discharge protection. In one embodiment, an integrated circuit (IC) includes a trigger circuit configured to generate a trigger voltage VT in response to an electrostatic discharge (ESD) event. A plurality of metal oxide semiconductor (MOS) transistors are coupled to the trigger circuit. The plurality of MOS transistors are configured to conduct ESD current from a plurality of circuit nodes, respectively, to a ground conductor in response to the trigger circuit generating the trigger voltage VT. A voltage limiter circuit is also included and is configured to limit the trigger voltage VT.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.