Classifying and detecting foreign objects using a power amplifier controller integrated circuit in wireless power transmission systems
US11139699B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 19, 2020 |
| Grant date | Oct 5, 2021 |
| Priority date | — |
| Expiry date | Sep 19, 2040 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F2200/468
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A wireless power transmitting system includes a power amplifier comprising a plurality of measurement points and a power amplifier controller integrated circuit (IC). In some embodiments, the power amplifier controller IC performs synchronization of the various components of the power amplifier, conducts impedance and temperature measurements at the measurements points, determines if a foreign object is within the transmission range of the wireless power transmitter, and decides if a shutdown of the power amplifier is needed. In some embodiments, the power amplifier controller IC determines through a transmitter controller IC, the presence of a foreign object within the transmission range and adjusts the power transmission to one or more receivers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.