ESD protection device for circuits with multiple power domains
US8767360B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 29, 2012 |
| Grant date | Jul 1, 2014 |
| Priority date | — |
| Expiry date | Sep 29, 2032 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49117
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A ESD protection scheme is disclosed for circuits with multiple power domains. Embodiments include: coupling a first power clamp to a first power rail and a first ground rail of a first domain; coupling a second power clamp to a second power rail and a second ground rail of a second domain; providing a blocking circuit for blocking current from an ESD event; providing an I/O interface connection in the first domain for transmitting signals from the first domain to the blocking circuit; providing a core interface connection in the second domain for transmitting signals from the blocking circuit to the second domain; coupling an input connection of the blocking circuit to the I/O interface connection; and coupling an output connection of the blocking circuit to a core interface connection.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.