Soft-stop circuit and method for a voltage regulator
US7906939B2 · kind B2 · utility
24Cited by
4References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 26, 2008 |
| Grant date | Mar 15, 2011 |
| Priority date | — |
| Expiry date | May 23, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M1/36
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A soft-stop circuit and method are provided for a voltage regulator which converts a battery voltage to an output voltage according to a feedback voltage derived from the output voltage and a reference voltage, to control the voltage regulator to enter a soft-stop state when the battery voltage is lower than a threshold level, and in which state, and the output voltage is controlled to decrease so as for the battery voltage to have a slower decreasing speed and in turn a longer battery lifetime.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.