Wide range ESD protection with fast POR transient time
US9847106B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 30, 2016 |
| Grant date | Dec 19, 2017 |
| Priority date | — |
| Expiry date | Aug 30, 2036 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10D89/711
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A POR circuit includes a voltage divider coupleable between a supply voltage and a POR trace, including a first element coupled between the supply voltage and a node, and a second element coupled between the node and the POR trace. A switch is drain to source coupled between the POR trace and a reference voltage. A first decoupling capacitor is coupled between the POR trace and the reference voltage. A second decoupling capacitor is coupled between the node and the reference voltage. ESD protection for an integrated circuit includes charging a node of a voltage divider coupled between a supply voltage and a POR trace to a predetermined percentage of the supply voltage, decoupling high frequency noise with a first decoupling capacitor between the POR trace and a reference voltage, and decoupling low frequency noise with a second decoupling capacitor between the node and the reference voltage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.