Power receiving circuit, control method for wireless power receiving apparatus, and electronic device
US9893556B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 15, 2015 |
| Grant date | Feb 13, 2018 |
| Priority date | — |
| Expiry date | Dec 28, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02J50/80
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A power receiving control circuit is provided that receives AC coil current IRX from a reception coil and that supplies DC output voltage VOUT. A rectifier circuit rectifies the coil current IRX. A linear regulator receives a rectified voltage VRECT across a smoothing capacitor, and generates the output voltage VOUT stabilized to a predetermined target level. A controller has predetermined control characteristics configured as a relation between the value of a charging current ICHG and the target value of the rectified voltage VRECT. The controller detects the value of the charging current ICHG, and transmits information which indicates electric power to be transmitted from a wireless power supply apparatus, with reference to the control characteristics. The controller is configured to be capable of changing the control characteristics.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.