Double time-constant for electrostatic discharge clamping
US6917207B1 · kind B1 · utility
6Cited by
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33Claims
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Assignee
Inventor
Key dates
| Filing date | Dec 22, 2003 |
| Grant date | Jul 12, 2005 |
| Priority date | — |
| Expiry date | Dec 30, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02H1/04
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A method and apparatus is provided for clamping of an electrostatic discharge using multiple time-constants. A rise in a voltage level is detected. A first time-constant is provided to determine whether the rise in the voltage level is caused by an electrostatic event. A clamping function is provided to clamp the voltage level in response to a determination that the rise in the voltage level is caused by the electrostatic event. A second time-constant is provided to provide a time period for maintaining the clamping function for a period of time to substantially extinguish the electrostatic event.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.