Multimode voltage regulator and method for providing a multimode voltage regulator output voltage and an output current to a load
US8618780B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 24, 2008 |
| Grant date | Dec 31, 2013 |
| Priority date | — |
| Expiry date | Jun 18, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02J2310/44
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A multimode voltage regulator comprises an output for providing a regulator output voltage Vdd and an output current to a load and a low power reference voltage source having a reference voltage output providing the regulator output voltage Vdd, when in a first low power mode the output current is not greater than a threshold value. It may comprise a buffer amplifier having an output providing the regulator output voltage Vdd, when the output current is greater than the threshold value and a first bias voltage input being connected in a second low power mode to the reference voltage output when the output current is greater than the threshold value for less than a predefined time. And it may comprise a mode controller for automatically determining the output current and automatically switching from first low power mode to second low power mode.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.