公开(公告)号：US12027923B2

公开(公告)日：2024-07-02

申请号：US17433279

申请日：2019-07-11

Applicant: LS ELECTRIC CO., LTD.

Inventor： Min Hun Chi ,  Chun Suk Yang

IPC: H05K5/00 ,  H02K11/33

CPC classification number: H02K11/33 ,  H05K5/0026 ,  H02K2211/03

Abstract: The present disclosure relates to a device for driving a motor, including a lower case having an accommodating space formed therein and an open upper side; an upper case closing an open surface of the lower case to form an inner space; a central case disposed in the lower case to partition an inner space formed by the lower case and the upper case; a first board disposed on the lower case and comprising a first connector; a second board disposed on the central case and comprising a second connector; and a connection board disposed in the inner space and comprising a first connection connector electrically connected to the first connector and a second connection connector electrically connected to the second connector to transmit electric signals between the board.

公开(公告)号：US12273036B2

公开(公告)日：2025-04-08

申请号：US17909602

申请日：2021-02-25

Applicant: LS ELECTRIC CO., LTD.

Inventor： Chun Suk Yang ,  Deok Young Lim

IPC: H02M3/335 ,  H02M1/00 ,  H02M1/34

Abstract: The present disclosure provides a switching mode power supply including a feedback circuit unit receiving one of the output voltages as feedback and calculating a compensation voltage for constantly controlling the output voltages, a control unit controlling on/off a duty ratio of the semiconductor switch conducting or cutting off the input circuit according to the compensation voltage, and a protection circuit unit receiving one of the plurality of output voltages to determine whether the feedback circuit unit fails and configured to cut off power of to the control unit when the feedback circuit fails.

公开(公告)号：US11881805B2

公开(公告)日：2024-01-23

申请号：US17432754

申请日：2019-07-11

Applicant: LS ELECTRIC CO., LTD.

Inventor： Hyun Gyu Ryu ,  Chun Suk Yang ,  Jong Wook Jeon ,  Min Hun Chi

IPC: H02P31/00 ,  H02P29/60

CPC classification number: H02P31/00 ,  H02P29/60

Abstract: The present disclosure relates to an interface circuit of a motor driving apparatus, the interface circuit comprising a power circuit unit for controlling driving of a motor, and a control panel unit which controls the power circuit unit and provides a user interface, wherein the power circuit unit further comprises a second MCU which controls a relay and an additional device unit and detects an operation state of the additional device unit, and the second MCU can communicate with a first MCU of the control panel unit via a communication line.