Current control for output device biasing stage
US9400514B2 · kind B2 · utility
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3References
8Claims
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Assignee
Inventors
Key dates
| Filing date | May 15, 2015 |
| Grant date | Jul 26, 2016 |
| Priority date | — |
| Expiry date | May 15, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F2200/555
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
Circuits and methods to control current through a device biasing an output device in case the supply voltage is not higher than the output voltage are disclosed. The circuits and methods are applicable to e.g. LDOs, amplifiers, or buffers. A control loop detects if the supply voltage is not higher than the output voltage and regulates the drain-source voltage of the biasing device. The disclosure reduces power consumption in a driver stage in case the supply voltage is not higher than the output voltage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.