公开(公告)号：EP3411937A1

公开(公告)日：2018-12-12

申请号：EP17748367.4

申请日：2017-02-06

申请人： Texas Instruments Incorporated

发明人： OETTINGER, Eric Gregory ,  SIDDABATTULA, Kalyan N.

IPC分类号： H02J50/60

CPC分类号： H02J50/80 ,  H02J50/12 ,  H02J50/60 ,  H04B5/0037

摘要： In an example, an integrated circuit includes a communication and control unit. The communication and control unit controls an inverter that applies an alternating current output signal to a transmission coil for reception by a receiver. The communication and control unit causes the inverter to provide a first and second transmit powers to the transmission coil, and the communication unit receives a first and second power received signals from the receiver in response to the first and second transmit powers. The communication and control unit determines a first gain and offset using the first transmit power, the first power. When a third transmit power greater than the second transmit power is transmitted by the transmission coil, the communication and control unit determines a second gain and a second offset using the first transmit power, the first power received signal, the third transmit power and a third power received signal.