公开(公告)号：US20230231479A1

公开(公告)日：2023-07-20

申请号：US18153003

申请日：2023-01-11

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Sungwoo LEE ,  Hyebong KO ,  Hyoungseok OH ,  Kyeseok YOON ,  Daewoong CHO ,  Woonhyung HEO

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

CPC classification number: H02M3/1582 ,  H02M1/0009 ,  H02M1/083

Abstract: A charging integrated circuit (IC) includes a bidirectional switching converter and a controller. The bidirectional switching converter is configured to generate a first output voltage by bucking a first input voltage based on a first switching operation in a buck mode, generate a second output voltage by boosting a second input voltage based on a second switching operation in a boost mode, and generate the first output voltage or the second output voltage based on a third switching operation in a buck-boost mode. The controller is configured to control the second switching operation according to a valley current mode control (VCMC) in a continuous current section and control the second switching operation according to a voltage mode control (VMC) based on a fixed switching frequency in a discontinuous current section, in the boost mode.

公开(公告)号：US20200059108A1

公开(公告)日：2020-02-20

申请号：US16665189

申请日：2019-10-28

Applicant: Samsung Electronics Co., Ltd.

Inventor： Sungwoo LEE ,  Hyoungseok OH ,  Kwang Chan LEE

IPC: H02J7/00 ,  H03K17/567 ,  H02J7/02 ,  G06Q20/32 ,  H02J50/10

Abstract: A semiconductor integrated circuit may include a recharge switch and a Wireless Recharge/MST unit. The recharge switch is connected with a battery through an intermediate node and provides a current path for wirely charging the battery in a wired charging mode. The Wireless Recharge/MST unit is connected between the intermediate node and a ground. The Wireless Recharge/MST unit disconnects the intermediate node and the ground in the wired charging mode, provides a wireless charging current to the battery through the intermediate node in a wireless charging mode, and is supplied with a current for generating a magnetic signal from the battery through the intermediate node in a magnetic secure transmission (MST) mode.

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：US20240235221A9

公开(公告)日：2024-07-11

申请号：US18199732

申请日：2023-05-19

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Daewoong CHO ,  Kyeseok YOON ,  Seunghoon KIM ,  Jeongdu YOO ,  Sungwoo LEE ,  Jungwook HEO

IPC: H02J7/00

CPC classification number: H02J7/00304 ,  H02J7/00714 ,  H02J7/007182

Abstract: A circuit includes: an overcurrent limiting (OCL) detector configured to detect whether a level of an inductor current reaches an OCL level and to generate an OCL detection voltage; a control loop circuit configured to generate a reset voltage by comparing a ramp voltage reflecting the level of the inductor current with an error voltage generated based on an operating condition that is out of a preset operating condition; an adaptive OCL controller configured to generate an OCL control current by counting a number of pulses of the OCL detection voltage and a number of pulses of the reset voltage; an oscillator configured to generate an oscillation voltage wherein a frequency of the oscillation voltage varies based on a magnitude of the overcurrent limit control current; and a switching transistor for switching the inductor current based on the oscillation voltage.

公开(公告)号：US20240072845A1

公开(公告)日：2024-02-29

申请号：US18504820

申请日：2023-11-08

Applicant: Samsung Electronics Co., Ltd.

Inventor： Sungwoo LEE ,  Hyoungseok OH ,  Minkyu KWON ,  Sungkyu CHO

IPC: H04B3/56 ,  H04B3/02

CPC classification number: H04B3/56 ,  H04B3/02 ,  H04B2203/5425 ,  H04B2203/5483 ,  H04B2203/5491

Abstract: A first mobile device including a connection terminal configured to electrically connect to a second mobile device, a variable impedance device connected to the connection terminal, the variable impedance device configured to vary an impedance, processing circuitry configured to determine a power line communication (PLC) mode between the first mobile device and the second mobile device to be one of a low-speed PLC mode or a high-speed PLC mode, and control the impedance of the variable impedance device according to the determined PLC mode, and a PLC modem configured to receive power from the second mobile device or communicate data with the second mobile device based on the determined PLC mode.

公开(公告)号：US20230080119A1

公开(公告)日：2023-03-16

申请号：US17990647

申请日：2022-11-18

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Sungkyu CHO ,  Minkyu KWON ,  Taesun YOU ,  Sungwoo LEE ,  Taejin JEONG ,  Daewoong CHO

IPC: H02J7/00

Abstract: A charging management chip includes a switching charging circuit and a direct charging circuit. The switching charging circuit receives charging power, and passes through the charging power to a first node, and charges a battery according to a switching charging method and controls generation of a system voltage provided to an electronic system. The direct charging circuit receives the charging power applied to the first node via an input node, and charges the battery according to a direct charging method by providing the charging power to an output node based on a switching circuit therein. The switching charging circuit charges the battery through a first charging path including an inductor arranged outside the charging management chip, and the direct charging circuit charges the battery through a second charging path through which the charging power transferred to the output node is directly provided to the battery.

公开(公告)号：US20220029661A1

公开(公告)日：2022-01-27

申请号：US17492782

申请日：2021-10-04

Applicant: Samsung Electronics Co., Ltd.

Inventor： Youngjin MOON ,  Hyoungseok OH ,  Sungwoo LEE

IPC: H04B5/00 ,  G06K7/08 ,  G06K19/04 ,  G06K19/06 ,  G06Q20/32 ,  G06Q20/34 ,  G06Q20/36 ,  G06Q20/38

Abstract: An electronic device may include a transmission circuit and an inductive element. The inductive element may be configured to generate a wireless communication signal based on a current. The transmission circuit may be configured to output the current based on a supply voltage; to increase an intensity of the current, from zero to an increased intensity that is less than or equal to a target value, by alternately repeating a first increase and a first decrease of the intensity of the current, in a first time interval; to decrease the intensity of the current, from the increased intensity to zero, by alternately repeating a second increase and a second decrease of the intensity of the current, in a second time interval.