Synchronous rectifier and controller for inductive coupling
US7920396B2 · kind B2 · utility
3Cited by
8References
20Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 13, 2007 |
| Grant date | Apr 5, 2011 |
| Priority date | — |
| Expiry date | Feb 25, 2029 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02B70/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A synchronous rectifier is arranged to rectify inductively coupled power using FETs (field effect transistors) to minimize the voltage drop of the rectifier, which minimizes power loss. Power loss is an important consideration in applications where fairly significant power is coupled to a device (such as a battery charger or other energy storage device) for a fairly short time (such as less than one hour) at a fairly low voltage (such as around 2.5 to 4.5 volts). Body diodes of the FETs can be used to supply power for bootstrapping and control logic for controlling the FETs.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.