Level shifter having feedback signal from high voltage circuit
US8988128B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 3, 2013 |
| Grant date | Mar 24, 2015 |
| Priority date | — |
| Expiry date | Jul 3, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03L5/00
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
According to an exemplary implementation, a level shifter includes a low voltage circuit and a high voltage circuit. The low voltage circuit is configured to provide a differential signal to the high voltage circuit. The high voltage circuit is configured to receive the differential signal from the low voltage circuit so as to level shift the differential signal from a first ground of the low voltage circuit to a second ground of the high voltage circuit. The differential signal is provided by the low voltage circuit responsive to a feedback signal from the high voltage circuit. The feedback signal can indicate common mode noise in the level shifter. Furthermore, the low voltage circuit can be configured to refresh the differential signal responsive to the feedback signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.