Electrostatic discharge protection apparatus
US9166402B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 14, 2013 |
| Grant date | Oct 20, 2015 |
| Priority date | — |
| Expiry date | May 15, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02H9/046
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
ESD protection apparatus disclosed herein include an ESD trigger circuit to sense the occurrence of an ESD event and an ESD discharge device to provide a low impedance path to ground through which to discharge energy associated with the ESD pulse. Some embodiments also include a VDD turn-on clamp to prevent the ESD discharge device from switching to a conductive state during a VDD power-on event. Some embodiments further include a VDD glitch clamp to prevent a switching pulse triggered by a transient disruption in the VDD supply from propagating to the ESD discharge device and causing the ESD discharge device to conduct in the absence of an ESD event.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.