Information handling system interrupting current to external module if current exceeds different current limits when handling system receives current from battery and alternating current source
US7111180B2 · kind B2 · utility
3Cited by
17References
21Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 29, 2003 |
| Grant date | Sep 19, 2006 |
| Priority date | — |
| Expiry date | Dec 10, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02H3/006
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A portable information handling system (IHS) includes an external module which derives its power from the internal unregulated DC power rail of the IHS. An IHS power subsystem includes a multiple threshold current protection circuit which continuously monitors power usage by the external module. The multiple threshold current limit protection circuit dynamically adjusts the current limit depending on whether the IHS is powered by an AC source or a DC battery source.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.