公开(公告)号：US20250007313A1

公开(公告)日：2025-01-02

申请号：US18759430

申请日：2024-06-28

Applicant: Samsung Electronics Co., Ltd.

Inventor： Mingi SONG ,  Juhyang LEE ,  Geonhong MIN ,  Kyungmin PARK ,  Changhak O ,  Inkook YOON ,  Hwarang CHA

IPC: H02J7/00 ,  H02J7/06 ,  H02J50/00

Abstract: A first electronic device configured to receive power wirelessly according to an embodiment may include: a power receiving circuit including a plurality of capacitors, at least one coil, and at least one switch, a rectifier including a plurality of transistors, and a control circuit. The control circuit according to an embodiment may be configured to: set the plurality of capacitors and the at least one coil to a first connection state through the at least one switch, based on a frequency specified by a second electronic device transmitting power wirelessly; receive alternating current (AC) power wirelessly from the second electronic device through the power receiving circuit set to the first connection state; control the plurality of transistors included in the rectifier to rectify the power received from the second electronic device; identify a first voltage of power rectified to direct current (DC) through the rectifier; set the plurality of capacitors and the at least one coil to a second connection state through the at least one switch to increase an impedance of the plurality of capacitors and/or change a resonant frequency of the power, based on identifying that the first voltage is greater than a first threshold; and control the plurality of transistors included in the rectifier to freewheel the power received from the second electronic device.