公开(公告)号：US20180309324A1

公开(公告)日：2018-10-25

申请号：US16024487

申请日：2018-06-29

Applicant: Integrated Device Technology, Inc.

Inventor： Manjit SINGH ,  Siamak BASTAMI ,  David WILSON

IPC: H02J50/10 ,  H02J7/02 ,  H02J50/20 ,  H02J5/00 ,  H04B5/00 ,  H02J50/60

CPC classification number: H02J50/10 ,  H02J5/005 ,  H02J7/025 ,  H02J50/20 ,  H02J50/60 ,  H04B5/0037 ,  H04B5/0068 ,  H04B5/0081

Abstract: An inductive wireless power transfer device comprises a transmitter that comprises a transmit coil configured to generate a wireless power signal to a coupling region in response to an input voltage, and a modulator configured to modulate the wireless power signal and encode data with the wireless power signal to establish a back-channel communication link from the transmitter to a receiver. An inductive wireless power receiving device comprises a receiver that comprises a receive coil configured to generate a time varying signal in response to receiving a modulated wireless power signal from a transmitter in a coupling region, and a demodulator configured to demodulate the modulated wireless power signal from an established back-channel communication link from the transmitter to a receiver. Related inductive wireless power transfer systems and methods for back-channel communication from the transmitter to the receiver of an inductive wireless power transfer system are disclosed.