公开(公告)号：US20250062686A1

公开(公告)日：2025-02-20

申请号：US18806085

申请日：2024-08-15

Applicant: Samsung Electronics Co., Ltd.

Inventor： Sungwoo LEE ,  Sungwoo MOON ,  Daewoong CHO ,  Youngwoo PARK ,  Jinwoo SO ,  Yonghwan CHO

IPC: H02M3/07 ,  H02J7/00

Abstract: A switched capacitor circuit includes first, third, fifth and seventh switches connected to each other, second, fourth, sixth and eighth switches connected to each other, one end of each of the first and second switches connected to an input node, ninth and tenth switches connected to each other, eleventh and twelfth switches connected to each other, thirteenth and fourteenth switches connected to each other, fifteenth and sixteenth switches connected to each other, a first capacitor between the first and ninth switches, a second capacitor between the second and fifteenth switches, a third capacitor between the third and eleventh switches, a fourth capacitor between the fourth and thirteenth switches, a fifth capacitor between the sixth and eleventh switches, and a sixth capacitor between the fifth and thirteenth switches, one end of each of the ninth, eleventh, thirteenth, fifteenth, seventh and eighth switches connected to an output node.

公开(公告)号：US20230059963A1

公开(公告)日：2023-02-23

申请号：US17891363

申请日：2022-08-19

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Kyeseok YOON ,  Hyebong KO ,  Jinwoo SO ,  Hyoungseok OH ,  Daewoong CHO ,  Jungwook HEO

IPC: H02M3/158 ,  H02M3/07

Abstract: A buck converter including: a first switching element connecting an input voltage node to a switching node; a second switching element connecting the switching node to a ground node; a low drop out (LDO) voltage regulator connected to the input voltage node; a pulse width modulation (PWM) controller configured to receive a mode signal indicating an operation mode and toggle, in response to the mode signal, a first control signal for turning on the first switching element or a second control signal for turning on the second switching element; a bootstrap charger configured to receive the mode signal and toggle, in response to the mode signal, a third control signal for turning on the second switching element; and a bootstrap capacitor connecting an output node of the LDO voltage regulator to the switching node.