Protection circuits
US11569657B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 4, 2021 |
| Grant date | Jan 31, 2023 |
| Priority date | — |
| Expiry date | Nov 4, 2041 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02H1/0007
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The protection circuit includes a detection circuit and a discharge circuit. The detection circuit is coupled to first and second power bonding pads and detects whether an ESD event or an EOS event occurs at the first power bonding pad. The detection circuit controls a detection voltage on a detection node according to a detection result. The first and second power bonding pads belong to different power domains. The discharge circuit is coupled to the detection node and the first power pad. In response to the ESD event occurring at the first power bonding pad, the discharge circuit provides a discharge path between the first power bonding pad and a ground terminal according to the detection voltage. In response to the EOS event occurring at the first power bonding pad, the detection circuit activates a second discharge path between the first power bonding pad and the ground terminal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.