公开(公告)号：US20230216416A1

公开(公告)日：2023-07-06

申请号：US18090212

申请日：2022-12-28

Applicant: LX Semicon Co., Ltd.

Inventor： Won Suk JANG ,  Tae Kyu NAM ,  Young Kook AHN ,  Sang Woo KIM ,  Jung Woong PARK ,  Tae Heon LEE ,  In Ho JEON

IPC: H02M3/158 ,  H02M1/088

CPC classification number: H02M3/1586 ,  H02M1/088 ,  G09G3/20

Abstract: The present disclosure provides for sequentially turning on a plurality of power conversion modules according to the magnitude of load power at the time of driving the power conversion modules, operating power conversion modules which have already been turned on in an optimum efficiency interval, and providing increased load power through a power conversion module which has been newly turned on.

公开(公告)号：US20240013736A1

公开(公告)日：2024-01-11

申请号：US18213495

申请日：2023-06-23

Applicant: LX Semicon Co., Ltd.

Inventor： Won Suk JANG ,  Tae Kyu NAM ,  Young Kook AHN ,  Chang Jin JEONG

IPC: G09G3/34

CPC classification number: G09G3/3406 ,  G09G2330/028 ,  G09G2310/08 ,  G09G2320/0626

Abstract: A power supply system for a display apparatus, in which a structure for supplying operating voltages for a display panel is improved, and the power supply system may improve power efficiency by generating operating voltages using a system voltage of a high level.

公开(公告)号：US20240039403A1

公开(公告)日：2024-02-01

申请号：US18177854

申请日：2023-03-03

Applicant: LX Semicon Co., Ltd.

Inventor： Young Kook AHN ,  Tae Kyu NAM ,  Won Suk JANG

IPC: H02M3/157 ,  H02M1/00 ,  H02M1/08

CPC classification number: H02M3/157 ,  H02M1/0095 ,  H02M1/082 ,  H02M1/0019

Abstract: A controller for a multi-level converter compares a first voltage proportional to an input voltage or an output voltage with a second voltage proportional to a voltage of a flying capacitor and adjusting a slope of a ramp signal for generating a pulse width modulation (PWM) signal so that the second voltage follows the first voltage in controlling the multi-level converter.

公开(公告)号：US20230198407A1

公开(公告)日：2023-06-22

申请号：US18084413

申请日：2022-12-19

Applicant: LX Semicon Co., Ltd.

Inventor： Young Kook AHN

IPC: H02M3/158 ,  H02M1/08 ,  H02M1/00

CPC classification number: H02M3/1582 ,  H02M1/08 ,  H02M1/0009

Abstract: The present disclosure provides a technique for sensing a peak through current sensing in a buck-boost DC/DC converter and estimating a turn-off time of a switch using the peak to perform a discontinuous current mode (DCM) operation.