公开(公告)号：US11243255B2

公开(公告)日：2022-02-08

申请号：US16705467

申请日：2019-12-06

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Sangbin Moon ,  Hyoungseok Oh ,  Sungwoo Lee ,  Jungwook Heo

IPC: G01R31/364 ,  G01R31/36 ,  G01R31/3842 ,  G01R31/389

Abstract: A battery device includes a first battery and a second battery connected in series. An electronic device for determining a state of charge of the battery device includes a sense resistor connected in series to the second battery, and a fuel gauge. The fuel gauge is configured to determine the state of charge of the battery device based on a first terminal voltage of the first battery, a first calculation current of the first battery, a second terminal voltage of the second battery, and a measurement current of the second battery measured through the sense resistor. The fuel gauge calculates a second calculation current of the second battery using a battery parameter of an equivalent circuit model, corrects the battery parameter when a difference between the measurement current and the second calculation current is not less than a threshold value, and calculates the first calculation current using the battery parameter or a corrected battery parameter.

公开(公告)号：US11139861B2

公开(公告)日：2021-10-05

申请号：US17001013

申请日：2020-08-24

Applicant: Samsung Electronics Co., Ltd.

Inventor： Youngjin Moon ,  Hyoungseok Oh ,  Sungwoo Lee

IPC: G06K5/00 ,  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.

公开(公告)号：US10958092B2

公开(公告)日：2021-03-23

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 ,  H02J50/10 ,  G06Q20/32 ,  H02J7/02 ,  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：US10673338B2

公开(公告)日：2020-06-02

申请号：US16519398

申请日：2019-07-23

Applicant: Samsung Electronics Co., Ltd.

Inventor： Kwang Chan Lee ,  Sungwoo Lee ,  Jungwook Heo ,  Hyoungseok Oh ,  Jiheon Kang ,  Hocheol Chung

IPC: H02M3/158 ,  H02M3/07 ,  G05F1/56 ,  H02M1/00

Abstract: A voltage converter includes a first transistor, a second transistor, a third transistor, a fourth transistor connected, an output capacitor, a flying capacitor, a first gate driver configured to output a first power supply voltage as a first high level and a first voltage as a first low level, a second gate driver configured to output a second power supply voltage as a second high level and a second voltage as a second low level, a third gate driver configured to output a third power supply voltage as a third high level and a third voltage as a third low level, a fourth gate driver configured to output a fourth power supply voltage as a fourth high level and a ground voltage as a fourth low level.

公开(公告)号：US10461558B2

公开(公告)日：2019-10-29

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 ,  G06Q20/32 ,  H02J7/02 ,  H03K17/567 ,  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：US20190081549A1

公开(公告)日：2019-03-14

申请号：US15967687

申请日：2018-05-01

Applicant: Samsung Electronics Co., Ltd.

Inventor： Kwang Chan LEE ,  Sungwoo Lee ,  Jungwook Heo ,  Hyoungseok Oh ,  Jiheon Kang ,  Hocheol Chung

IPC: H02M1/088 ,  H02M3/155

CPC classification number: H02M1/088 ,  H02M1/08 ,  H02M3/155 ,  H02M3/156 ,  H02M2001/0006 ,  H02M2001/0035 ,  H03K17/063 ,  H03K2217/0081

Abstract: The voltage converter including an inductor connected between an output node and a switch node, a capacitor connected between the output node and a ground node, first transistor connected between the switch node and the ground node, a second transistor connected between the switch node and an input node, a boost capacitor connected between the switch node and a boost node, a first driver configured to drive a gate voltage of the first transistor based on a ground voltage of the ground node and a power supply voltage of a power node, a second driver configured to drive a gate voltage of the second transistor based on a switch voltage of the switch node and a boost voltage of the boost node and, and a regulator configured to control the boost voltage depending on a status of the voltage converter may be provided.