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公开(公告)号：US20220255435A1
公开(公告)日：2022-08-11
申请号：US17665933
申请日：2022-02-07
Applicant: Samsung Electronics Co., Ltd.
Inventor： Kyeseok Yoon , Hyebong Ko , Jinwoo So , Hyoungseok Oh , Daewoong Cho , Jungwook Heo
Abstract: The inventive concepts provide a bidirectional switching converter including a first power metal oxide semiconductor field effect transistor (MOSFET) connecting an input voltage node to a switching node, a second power MOSFET connecting the switching node to a ground node, and a zero current detection (ZCD) auto-calibration circuit configured to perform one of an operation of generating a first offset for varying a turn-on time of the first power MOSFET according to an operation mode and an operation of generating a second offset for varying a turn-on time of the second power MOSFET according to the operation mode.
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公开(公告)号：US11152924B2
公开(公告)日：2021-10-19
申请号：US16910261
申请日：2020-06-24
Applicant: SAMSUNG ELECTRONICS CO., LTD.
Inventor： Kwang Chan Lee , Hyoungseok Oh , Jungwook Heo
IPC: H03K19/0175 , H03K3/356 , H03K19/0185
Abstract: A level shifter including an input block that receives an input voltage swinging between a first ground voltage and a first power supply voltage and that connects one node of a first node and a second node to a first ground node, in response to the input voltage, a shifting block that mutually exchanges the voltage levels of third and fourth nodes in response to a current flowing through the one node, a pulse generator that generates a first pulse and a second pulse in response to the input voltage, a first transistor that directly connects the third node to the first ground node in response to the first pulse, and a second transistor that directly connects the fourth node to the first ground node in response to the second pulse.
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公开(公告)号：US20240283274A1
公开(公告)日：2024-08-22
申请号：US18583593
申请日：2024-02-21
Applicant: SAMSUNG ELECTRONICS CO., LTD.
Inventor： Sungwoo Lee , Sungwoo Moon , Jinwoo So , Daewoong Cho , Yonghwan Cho , Jungwook Heo
IPC: H02J7/00
CPC classification number: H02J7/00712 , H02J7/0048 , H02J2207/20
Abstract: A charging integrated circuit (IC) includes a battery, a switched capacitor IC comprising a second power stage for direct charging, and a switching charger IC comprising a first power stage for switching charging, a power meter configured to obtain information about input/output voltage and current, and a control circuit configured to perform switching charging by controlling the first power stage or perform direct charging through the switched capacitor IC by controlling the second power stage.
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公开(公告)号：US10361620B2
公开(公告)日：2019-07-23
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
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.
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公开(公告)号：US20240178759A1
公开(公告)日：2024-05-30
申请号：US18238307
申请日：2023-08-25
Applicant: SAMSUNG ELECTRONICS CO., LTD.
Inventor： Daewoong Cho , Kyeseok Yoon , Hosung Son , Sungwoo Lee , Woonhyung Heo , Jungwook Heo
CPC classification number: H02M3/1582 , H02M1/0009 , H02J7/007
Abstract: An electronic device is provided. The electronic device includes: a first transistor configured to connect an input voltage node to a switching node; a second transistor configured to connect the switching node to a ground node; a latch circuit configured to generate a first signal having a first frequency and to control the first frequency based on a level of a load current; a switching modulation circuit configured to generate a second signal having a second frequency which is 1/N (where N is a natural number) times the first frequency; and a controller configured to control each of the first transistor and the second transistor, based on the second signal.
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Patent Agency Ranking
公开(公告)号：US11190097B2
公开(公告)日：2021-11-30
申请号：US16850413
申请日：2020-04-16
Applicant: Samsung Electronics Co., Ltd.
Inventor： Kwang Chan Lee , Hyoungseok Oh , Hojun Yu , Jeongkwang Lee , Jungwook Heo
Abstract: A voltage converter including first to fourth switches between a first voltage node and ground, fifth to eighth switches between the first voltage node and the ground, a first floating capacitor between a first node between the first and second switches and a second node between the third and fourth switches, a second floating capacitor between a third node between the fifth and sixth switches and a fourth node between the seventh and eighth switches, a ninth switch between a second voltage node and a center node, a first inductor between the second node and a third voltage node, a center capacitor between the center node and the ground, a tenth switch between the second voltage node and the third voltage node, a first capacitor between the third voltage node and the ground, and a second capacitor between the second voltage node and the ground may be provided.
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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.
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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
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.
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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
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.
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公开(公告)号：US12273032B2
公开(公告)日：2025-04-08
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 , H02M1/00 , H02M3/335 , H02M7/483 , 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.
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