Power adapter interface circuitry for protecting a battery operated system
US7106566B2 · kind B2 · utility
8Cited by
5References
36Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 8, 2003 |
| Grant date | Sep 12, 2006 |
| Priority date | — |
| Expiry date | Jan 23, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02H11/002
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An integrated circuit (IC) has logic and timing circuits that are coupled to discrete circuitry to provide protection and indications whenever an AC adapter that is faulty or has improper voltage levels or polarity are plugged into a system. In particular, the IC device provides over-voltage, under-voltage, and reversed-polarity protections to an electronic system to keep the electronic system from being damaged by an alternating current (AC) adapter having an improper voltage range or voltage polarity. It also provides a protection that prevents an adapter from powering a host system that has a short-circuit fault.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.