公开(公告)号：US20230217554A1

公开(公告)日：2023-07-06

申请号：US18092618

申请日：2023-01-03

Applicant: LG Electronics Inc.

Inventor： Sihoon JEONG ,  John Kang ,  Hoseop Ahn ,  Kyelyong Kang

IPC: H05B6/06 ,  H05B6/12

CPC classification number: H05B6/062 ,  H05B6/1209

Abstract: An induction heating device according to an embodiment includes a rectifying circuit configured to rectify an AC voltage supplied from a power supply, a smoothing circuit configured to smooth a voltage output from the rectifying circuit, an inverter comprising a plurality of switches and configured to supply current to a working coil, a shunt resistor coupled between the smoothing circuit and the inverter, a drive circuit configured to supply switching signals to the plurality of switches provided in the inverter, respectively, and a controller configured to determine a driving frequency of the inverter and drive the working coil by supplying a control signal based on the driving frequency to the driving circuit.