Power management system and method for a portable device
US9472967B2 · kind B2 · utility
9Cited by
18References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 31, 2014 |
| Grant date | Oct 18, 2016 |
| Priority date | — |
| Expiry date | Feb 14, 2035 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/72
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A method and circuit for avoiding a low voltage shutdown in a portable device due to a low voltage falsely indicating a discharged battery employs an input current sensing circuit to determine when a high current is being drawn by the portable device. When the portable device is drawing a high current from the battery, the shutdown function is at least temporarily suppressed. If, during the high current event, the battery behavior indicates that it is actually near fully discharged, the shutdown functionality can be enabled to shut down the portable device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.