Sense amplifier for use with wake-up charging current
US7268520B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Apr 8, 2005 |
| Grant date | Sep 11, 2007 |
| Priority date | — |
| Expiry date | Apr 8, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02J7/04
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A sense amplifier adapted to amplify a voltage signal representative of a charging current provided to a rechargeable battery. The sense amplifier may include a p-type input sense amplifier and an n-type input sense amplifier, The p-type input sense amplifier may be enabled and the n-type input sense amplifier may be disabled if a battery voltage level of the rechargeable battery is less than an under voltage threshold level. The p-type input sense amplifier may be disabled and the n-type input sense amplifier may be enabled if the battery voltage level is greater than or equal to the under voltage threshold level. A related method and an electronic device having a sense amplifier consistent with an embodiment are also provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.