Electrostatic discharge circuit and method of operating same
US11848554B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 26, 2021 |
| Grant date | Dec 19, 2023 |
| Priority date | — |
| Expiry date | Oct 26, 2041 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10D89/911
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An electrostatic discharge (ESD) circuit includes an ESD detection circuit, a clamp circuit and an ESD assist circuit. The ESD detection circuit is coupled between a first and a second node. The first node has a first voltage. The second node has a second voltage. The clamp circuit includes a first transistor having a first gate, a first drain, a first source and a first body terminal. The first gate is coupled to at least the ESD detection circuit by a third node. The first drain is coupled to the second node. The first source and the first body terminal are coupled together at the first node. The ESD assist circuit is coupled between the first node and the third node, and is configured to clamp a third voltage of the third node at the first voltage during an ESD event at the first node or the second node.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.