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：US20230216406A1

公开(公告)日：2023-07-06

申请号：US18147885

申请日：2022-12-29

Applicant: LX SEMICON CO., LTD.

Inventor： Xuan Dien DO ,  Yoon Soo SHIN ,  Chang Jin JEONG ,  Jin Su BYEON

IPC: H02M3/158 ,  H02M1/00 ,  G09G3/36

CPC classification number: H02M3/158 ,  H02M1/0009 ,  H02M1/0032 ,  G09G3/3696 ,  G09G2330/021

Abstract: According to one embodiment of the present disclosure, there is provided a DC-DC converter including a slope compensation circuit configured to generate a sawtooth-shaped compensation ramp wave to output a slope voltage, a current sensing circuit configured to receive and convert a sensing current to output the converted current, and an adder configured to receive the slope voltage and the sensing current, wherein the adder includes a sensing resistor and a sensing switch, one end of the sensing resistor is connected to the current sensing circuit and the other end of the sensing resistor is connected to the sensing switch and the slope compensation circuit, and one end of the sensing switch is connected to the sensing resistor and the slope compensation circuit and the other end of the sensing switch is connected to the ground.