公开(公告)号：US20180019619A1

公开(公告)日：2018-01-18

申请号：US15648590

申请日：2017-07-13

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Nikolay Nikolayevich OLYUNIN ,  Mikhail Nikolayevich MAKURIN ,  Artem Rudolfovich VILENSKIY ,  Alexander Nikolayevich KHRIPKOV ,  SungBum PARK ,  DoWon KIM

IPC: H02J50/12 ,  H02J50/80 ,  H02J7/02

Abstract: A device that wirelessly transfers power to an external device is provided. The device for wirelessly transferring power to an external device includes a resonant circuit including an adaptive circuit including at least one variable capacitor and a first inductor inductively coupled to the external device and configured to transfer the power to the external device using inductive coupling, and a first direct current (DC) power supply configured to apply a DC voltage to the adaptive circuit based on a control signal, wherein capacitance of the at least one variable capacitor is adjusted based on the DC voltage applied to the adaptive circuit.