Electrostatic discharge protection circuit and method thereof
US8922963B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jan 30, 2013 |
| Grant date | Dec 30, 2014 |
| Priority date | — |
| Expiry date | Jun 2, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02H9/046
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An ESD protection circuit has a clamp control circuit and a clamp switch. The clamp switch has a first terminal, a second terminal and a control terminal, wherein the first terminal is coupled to a first node, and the second terminal is coupled to a second node. The clamp control circuit is coupled between the first node and the second node, wherein the clamp control circuit is configured to detect the rising time of the voltage between the first node and the second node, and to provide a clamp control signal to the control terminal of the clamp switch based on the rising time, if the rising time is shorter than a first time threshold, the clamp switch is turned ON for a second time threshold, and wherein the first time threshold is shorter than the second time threshold.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.