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：US20250038555A1

公开(公告)日：2025-01-30

申请号：US18753373

申请日：2024-06-25

Applicant: Samsung Electronics Co., Ltd.

Inventor： Sungwoo LEE ,  Jaekyu KIM ,  Sungwoo MOON ,  Daewoong CHO ,  Jungwook HEO

IPC: H02J7/00 ,  H02J50/10 ,  H02M3/158 ,  H04R1/10

Abstract: A charging circuit may include a buck-boost circuit and a voltage regulator circuit, wherein the buck-boost circuit converts a first input voltage received at a first node into a first output voltage and charges a battery based on the first output voltage, and time-divisionally converts a second input voltage provided from the battery into a second output voltage provided to a first external device and a third output voltage provided to a second external device, and the voltage regulator circuit adjusts the first input voltage to generate the second output voltage and the third output voltage.

公开(公告)号：US20230163635A1

公开(公告)日：2023-05-25

申请号：US17982855

申请日：2022-11-08

Applicant: Samsung Electronics Co., Ltd.

Inventor： Hyunsu KIM ,  Inyeong JANG ,  Donghyuk CHOI ,  Sungwoo MOON ,  Youso CHEON

IPC: H02J50/12 ,  H02J50/60 ,  H02J50/80

CPC classification number: H02J50/12 ,  H02J50/60 ,  H02J50/80

Abstract: A wireless power transmission device includes a converter circuit configured to generate a test signal having a test frequency based on an input current generated from a power source, a resonant tank configured to transmit wireless power in response to the test signal, a current sensing circuit configured to sense the input current when the wireless power is transmitted, and a controller configured to control the converter circuit to generate a test signal, calculate a quality factor of the resonant tank based on the sensed input current, reset the test frequency according to a comparison result between the quality factor and a stored reference quality factor, and control the converter circuit to reset the test frequency or transmit a digital ping signal to the wireless power reception device according to a result of comparing the quality factor with the stored reference quality factor.