| 发明名称 |
WIRELESS CHARGER SYSTEM THAT HAS VARIABLE POWER / ADAPTIVE LOAD MODULATION |
| 摘要 |
A wireless charging system that includes in-band communication includes: a source device, including: at least a transmitter coil for providing a wireless charging power which is modulated according to a reflected impedance of at least a target device; and at least the target device, oriented on and magnetically coupled to the source device, for receiving the charging power. The target device includes: a receiver coil, loosely coupled to the transmitter coil, for receiving the charging power; a variable resistor loading the receiver coil; and a power detection and modulation circuit, for determining a size of the charging power, and providing a modulation control signal to the variable resistor according to the size of the charging power, for varying the resistance of the variable resistor in order to control an impedance of the target device which will be reflected at the source device. |
| 申请公布号 |
US2015091523(A1) |
申请公布日期 |
2015.04.02 |
| 申请号 |
US201414503326 |
申请日期 |
2014.09.30 |
| 申请人 |
MediaTek Singapore Pte. Ltd. |
发明人 |
Satyamoorthy Anand;Riehl Patrick Stanley;Plumb William |
| 分类号 |
H02J7/02;H02J7/00 |
主分类号 |
H02J7/02 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
1. A wireless charging system that includes in-band communication, comprising:
a source device, comprising:
at least one transmitter coil for providing a wireless charging power; and at least the target device, oriented on and magnetically coupled to the source device, for receiving the charging power, the target device comprising:
a receiver coil, loosely coupled to the transmitter coil, for receiving the charging power; anda variable resistor loading the receiver coil. |
| 地址 |
Singapore SG |
