公开(公告)号：US20180212469A1

公开(公告)日：2018-07-26

申请号：US15611267

申请日：2017-06-01

Applicant: RICHTEK TECHNOLOGY CORPORATION

Inventor： Kuo-Chi Liu ,  Chi-Min Lee

IPC: H02J50/12 ,  H04B5/00 ,  H02J50/80

CPC classification number: H02J50/12 ,  H02J50/40 ,  H02J50/80 ,  H04B5/0037

Abstract: The present invention provides a multi-mode wireless power receiver circuit which includes a first and a second resonant circuits, a first and a second rectifier circuits, a DC-DC conversion circuit, and an output power control circuit. The first and the second resonant circuits receive a first and a second wireless power to generate a first and a second AC resonant signals respectively. The first and the second rectifier circuits rectify the first and the second AC resonant signals to generate a first and a second rectified output signals respectively. The DC-DC conversion circuit converts the second rectified output signal into a DC output signal. The output power control circuit combines the DC output signal and the first rectified output signal to generate a system output signal, and controls the DC-DC conversion circuit by a conversion control signal to adjust the system output signal such that the system output signal meets a power requirement.