Electrostatic discharge (ESD) protection and operating method thereof
US8797698B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 19, 2013 |
| Grant date | Aug 5, 2014 |
| Priority date | — |
| Expiry date | Feb 19, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02H9/046
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An electrostatic discharge (ESD) protection circuit includes a clamp transistor, and inverter, a resistance-capacitance (RC) circuit, and a current mirror. The clamp transistor is coupled between a first supply node and a second supply node. The inverter has an input end and an output end, and the output end of the inverter is coupled with a gate of the clamp transistor. The RC circuit is coupled to the first supply node. The current mirror includes a first transistor and a second transistor. The first transistor is coupled between the input end of the inverter and the second supply node, and the second transistor is coupled between the RC circuit and the second supply node.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.