Power receiver control circuit for wireless power receiver apparatus
US10069338B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 28, 2016 |
| Grant date | Sep 4, 2018 |
| Priority date | — |
| Expiry date | Oct 22, 2036 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02J50/80
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A control circuit is provided for a power receiver apparatus. A target voltage range setting unit sets an upper limit voltage VH and a lower limit voltage VL that define a target voltage range REF to be set for a rectified voltage VRECT that develops across a smoothing capacitor. An electric power control unit compares the rectified voltage VRECT with each of the upper limit voltage VH and the lower limit voltage VL, and generates a power control signal DPC based on the comparison result. A modulator modulates the power control signal DPC, and transmits the modulated signal to a wireless power transmitter apparatus via a reception coil. Upon detection of an oscillation state in the rectified voltage VRECT, the target voltage range setting unit expands the target voltage range REF.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.