Battery over voltage and over protection circuit and adjustable adapter current limit circuit
US6989981B2 · kind B2 · utility
7Cited by
18References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 24, 2002 |
| Grant date | Jan 24, 2006 |
| Priority date | — |
| Expiry date | Jun 18, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02J7/0068
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A battery charging circuit is disclosed that includes protection circuitry and/or adapter current limit offset circuitry. The protection circuitry is operable to reduce or eliminate an overvoltage and overcurrent condition generated by a charge controller when a charging path is an open circuit, for example, when a battery is disconnected from the charging path. The adapter current limit offset circuitry is operable to generate an offset signal to an adapter current signal utilized by a charger controller.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.