Interface for communication between voltage domains
US8818265B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 24, 2012 |
| Grant date | Aug 26, 2014 |
| Priority date | — |
| Expiry date | Sep 25, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K17/00
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
One or more embodiments provide circuitry for isolation and communication of signals between circuits operating in different voltage domains using capacitive coupling. The embodiments utilize capacitive structures having increased breakdown voltage in comparison to previous parallel plate implementations. The capacitive isolation is provided by parallel plate capacitive structures, each implemented to have parallel plates of different horizontal sizes. Due to the difference in horizontal size, edges of the parallel plates, where electric fields are the strongest, are laterally offset from the region where the parallel plates overlap. As a result, breakdown voltage between the parallel plates is increased.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.