Power-rail electro-static discharge (ESD) clamp circuit
US8773826B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 29, 2012 |
| Grant date | Jul 8, 2014 |
| Priority date | — |
| Expiry date | Nov 30, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01L2924/0002
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A power-rail ESD clamp circuit with a silicon controlled rectifier and a control module is provided. The silicon controlled rectifier is connected to a high voltage level and a low voltage level for bearing a current flow. The control module is connected to the silicon controlled rectifier in parallel, and includes a PMOS, a NMOS, at least one output diode, a resistor and a conducting string. The silicon controlled rectifier is a P+ or N+ triggered silicon controlled rectifier. By employing the novel power-rail ESD clamp circuit, it is extraordinarily advantageous of reducing both a standby leakage current and layout area while implementation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.