Self-healing electrostatic discharge power clamp
US9425185B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 29, 2014 |
| Grant date | Aug 23, 2016 |
| Priority date | — |
| Expiry date | Dec 4, 2034 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/435
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Circuits and methods of fabricating circuits that provide electrostatic discharge protection, as well as methods of protecting an integrated circuit from electrostatic discharge. The protection circuit may include a power clamp device, a timing circuit including a resistor and a capacitor that is coupled with the resistor at a node, and a power clamp device coupled with the timing circuit at the node. The capacitor includes a plurality of capacitor elements. The protection circuit further includes a plurality of electronic fuses. Each electronic fuse is coupled with a respective one of the capacitor elements. A field effect transistor may be coupled in parallel with the resistor of the timing circuit, and may be used to bypass the resistor to provide a programming current to any electronic fuse coupled with a capacitor element of abnormally low impedance.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.