Backdrive protection circuit
US8400193B2 · kind B2 · utility
1Cited by
5References
20Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 21, 2011 |
| Grant date | Mar 19, 2013 |
| Priority date | — |
| Expiry date | Sep 6, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K17/302
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
Methods, devices and circuits are provided for protection from backdrive current. One such device is subject to back voltage from an output node of the device and includes circuitry that is configured to compare the supply voltage node and the output node. In response to the comparison, the circuitry generates an output signal. Level shifted versions of the output signal are used to provide an output voltage corresponding to the higher of a supply voltage node and an output node. Switches are used to place the device in different modes in response to the output signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.