发明名称 |
CIRCUIT AND ARCHITECTURE FOR A DEMODULATOR FOR A WIRELESS POWER TRANSFER SYSTEM AND METHOD THEREFOR |
摘要 |
A primary side wireless power transmitter inductively couplable to a secondary side wireless power receiver for receiving communications from the secondary side wireless power receiver through the inductive coupling having a primary side tank circuit receiving a signal from the secondary side wireless power receiver. A phase delay or time delay circuit generates a fixed delay clock signal from a signal utilized to excite the primary side tank circuit. A sample and hold circuit samples a tank circuit voltage utilizing the fixed phase or time delayed clock signal. A comparator is coupled to an output of the sample and hold circuit for extracting data or commands from the signal stream. A method of operating a primary side wireless transmitter inductively coupled to a secondary side wireless power receiver for supplying power to the wireless power receiver to power a load coupled to the receiver is also disclosed. |
申请公布号 |
US2015171932(A1) |
申请公布日期 |
2015.06.18 |
申请号 |
US201414502378 |
申请日期 |
2014.09.30 |
申请人 |
Texas Instruments Incorporated |
发明人 |
Khandelwal Ashish;Su Yipeng |
分类号 |
H04B5/00;H04B5/02 |
主分类号 |
H04B5/00 |
代理机构 |
|
代理人 |
|
主权项 |
1. In a primary side wireless power transmitter for being inductively coupled to a secondary side wireless power receiver for supplying power to the wireless power receiver to power a load coupled to the wireless power receiver, a primary side control for receiving communications from the secondary side wireless power receiver through the inductive coupling, comprising:
a primary side tank circuit being excited into oscillation by excitation signal, the tank circuit receiving a signal from the secondary side wireless power receiver; a delay circuit generating a fixed delay clock signal from the excitation signal; a sample and hold circuit sampling a tank circuit voltage utilizing the fixed delayed clock signal; and a comparator coupled to an output of the sample and hold circuit for extracting data or commands from the signal stream. |
地址 |
Dallas TX US |