Differential current output driver with overvoltage protection
US7957111B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 15, 2008 |
| Grant date | Jun 7, 2011 |
| Priority date | — |
| Expiry date | Aug 21, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K19/00315
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A differential current output driver and a method for overvoltage protection of a differential current output driver circuit are provided. The output driver includes a differential current output driver circuit operable by a power supply voltage and including first and second driver transistors in a differential current configuration and first and second output pads, and an overvoltage protection circuit configured to generate a protected voltage in response to a voltage on at least one of the first and second output pads and an absence of the power supply voltage, and to apply the protected voltage to at least one transistor of the differential current output driver circuit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.