Electrostatic discharge protection circuit
US10840237B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 9, 2018 |
| Grant date | Nov 17, 2020 |
| Priority date | — |
| Expiry date | Dec 13, 2038 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02H9/046
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An electrostatic discharge (ESD) protection circuit is coupled between first and second power supply buses. The ESD protection circuit includes a detection circuit; a pull-up circuit, coupled to the detection circuit, comprising at least a first n-type transistor; a pull-down circuit, coupled to the pull-up circuit, comprising at least a second n-type transistor; and a bypass circuit, coupled to the pull-up and pull-down circuits, wherein the detection circuit is configured to detect whether an ESD event is present on either the first or the second bus so as to cause the pull-up and pull-down circuits to selectively enable the bypass circuit for providing a discharging path between the first and second power supply buses.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.