Method and apparatus for controlling a voltage level
US7262631B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Apr 11, 2005 |
| Grant date | Aug 28, 2007 |
| Priority date | — |
| Expiry date | Jun 26, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K19/0016
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A voltage level control device operable to control a voltage level supplied from a first voltage level source to circuitry, said circuitry being arranged between said first voltage level source and a second voltage level source, said first and second voltage level sources being operable to output different voltage levels; said voltage level control device comprising: a power transistor operable to be connected between said first voltage level source and said circuitry, said power transistor comprising a sleep signal input operable to receive a sleep signal; a switching device arranged in parallel with said power transistor and comprising a sleep signal input operable to receive a pseudo sleep signal; wherein said voltage level control device is operable in dependence upon said sleep signal and said pseudo sleep signal to output to said circuitry an output voltage said output voltage comprising one of three voltage levels, said three voltage levels lying between voltage levels output by said first and second voltage sources.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.