Switch embedded integrated circuit and method for battery protection
US8415927B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 27, 2010 |
| Grant date | Apr 9, 2013 |
| Priority date | — |
| Expiry date | Aug 4, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02J7/00306
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A switch embedded integrated circuit for battery protection includes a MOSFET having a body diode, and a control logic circuit for switching the MOSFET and the direction of the body diode to control the charge current to and the discharge current from a battery. The control logic circuit turns off the MOSFET once any abnormal operation such as over-voltage and under-voltage happens, and turns on the MOSFET according to an OVPR threshold, an OVPR delay time, an UVPR threshold and an UVPR delay time. The OVPR threshold and the OVPR delay time are determined depending on the battery being coupled to a load or a charger, or floating.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.