公开(公告)号：US20220271796A1

公开(公告)日：2022-08-25

申请号：US17739342

申请日：2022-05-09

Applicant: Samsung Electronics Co., Ltd.

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

IPC: H04B3/56 ,  H04B3/02

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：US20210075244A1

公开(公告)日：2021-03-11

申请号：US16847840

申请日：2020-04-14

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：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：US20230142751A1

公开(公告)日：2023-05-11

申请号：US17953755

申请日：2022-09-27

Applicant: Samsung Electronics Co., Ltd.

Inventor： Yonghwan CHO ,  Sungwoo LEE ,  Hyoungseok OH ,  Daewoong CHO ,  Jungwook HEO

IPC: H02J7/00

CPC classification number: H02J7/0019 ,  H02J7/007182 ,  H02J2207/20 ,  H02J2207/40

Abstract: A charger integrated circuit is configured to charge a battery device including a first battery and a second battery connected in series. The circuit includes a direct charger configured to generate a first charging current and a first current based on an input voltage received from an input terminal, the first current used to generate a first system current, and a buck converter configured to generate a second current and a second system current based on the input voltage, the second current used to generate a second charging current. The circuit includes a switched capacitor configured to generate the first system current based on the first current, and to generate the second charging current based on the second current, and a linear charger configured to provide the first charging current and the second charging current to the battery device.

公开(公告)号：US20240146178A1

公开(公告)日：2024-05-02

申请号：US18220964

申请日：2023-07-12

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Sungkyu CHO ,  Kyeseok YOON ,  Dongjoon KIM ,  Sungwoo LEE ,  Daewoong CHO ,  Jungwook HEO

IPC: H02M1/088 ,  H02M1/00 ,  H02M1/14 ,  H02M3/158

CPC classification number: H02M1/088 ,  H02M1/0025 ,  H02M1/0054 ,  H02M1/14 ,  H02M3/158 ,  H03K3/037

Abstract: A voltage converter, including a switch circuit configured to generate an output voltage by switching an input voltage and a ground voltage based on a driving control signal; an error voltage generator configured to generate an error voltage based on a comparison between the output voltage and a reference voltage; a duty signal generator configured to generate a duty signal having a constant pulse frequency or a modulated pulse frequency, based on a result of the comparing; and a driving controller configured to generate the driving control signal based on the duty signal.

公开(公告)号：US20230155507A1

公开(公告)日：2023-05-18

申请号：US17985301

申请日：2022-11-11

Applicant: Samsung Electronics Co., Ltd.

Inventor： Sungwoo LEE ,  Hyoungseok OH ,  Daewoong CHO ,  Jungwook HEO

IPC: H02M3/158 ,  H02J7/00 ,  H02M3/335 ,  H02M7/483 ,  H02M7/5395 ,  H03K17/693

CPC classification number: H02M3/1582 ,  H02J7/0068 ,  H02M3/33584 ,  H02M7/4837 ,  H02M7/5395 ,  H03K17/693

Abstract: A charger integrated circuit includes a bidirectional switching converter including first to fourth switching elements connected in series, an inductor connected to a third switching element, and a capacitor connected to a second switching element and the third switching element, and a controller configured to generate, a first PWM signal and a second PWM signal based on sensing signals from the bidirectional switching converter, and a first switching signal controlling first and fourth switching elements based on the first PWM signal in response to an average of an inductor current being positive, a second switching signal controlling second and third switching elements based on the second PWM signal, and generate the first switching signal based on the second PWM signal, and the second switching signal based on the first PWM signal in response to the average value of the inductor current being negative.

公开(公告)号：US20210203380A1

公开(公告)日：2021-07-01

申请号：US17001988

申请日：2020-08-25

Applicant: Samsung Electronics Co., Ltd.

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

IPC: H04B3/56 ,  H04B3/02

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：US20180365681A1

公开(公告)日：2018-12-20

申请号：US15854162

申请日：2017-12-26

Applicant: Samsung Electronics Co., Ltd.

Inventor： Sungwoo LEE ,  Youngjin Moon ,  Hyoungseok Oh

IPC: G06Q20/34 ,  H01F1/34 ,  H01F38/14 ,  H04B5/00

CPC classification number: G06Q20/341 ,  H01F1/34 ,  H01F38/14 ,  H01F2038/143 ,  H04B5/0056 ,  H04B5/0075

Abstract: A magnetic secure transmission (MST) device which generates an MST signal includes a first transmitter, a first coil that generates a first signal depending on an operation of the first transmitter, a second transmitter that operates at an operating frequency of the first transmitter, and a second coil that generates a second signal for offsetting or compensating for the first signal depending on an operation of the second transmitter. The MST signal is generated as the first signal and the second signal overlap each other.

公开(公告)号：US20180123373A1

公开(公告)日：2018-05-03

申请号：US15604852

申请日：2017-05-25

Applicant: Samsung Electronics Co., Ltd.

Inventor： Sungwoo LEE ,  Hyoungseok OH ,  Kwang Chan LEE

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

CPC classification number: H02J7/0068 ,  G06Q20/327 ,  H02J7/0034 ,  H02J7/0052 ,  H02J7/008 ,  H02J7/025 ,  H02J50/10 ,  H03K17/567

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：US20240136833A1

公开(公告)日：2024-04-25

申请号：US18199732

申请日：2023-05-18

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.