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公开(公告)号：EP4040663A1
公开(公告)日：2022-08-10
申请号：EP22155678.0
申请日：2022-02-08
发明人： YOON, Kyeseok , KO, Hyebong , SO, Jinwoo , OH, Hyoungseok , CHO, Daewoong , HEO, Jungwook
摘要： 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：EP4362301A1
公开(公告)日：2024-05-01
申请号：EP23186079.2
申请日：2023-07-18
发明人： CHO, Sungkyu , YOON, Kyeseok , KIM, Dongjoon , LEE, Sungwoo , CHO, Daewoong , HEO, Jungwook
CPC分类号： H02M1/0032 , H02M1/14 , H02M3/158 , H03K7/08 , H03K3/0231
摘要： 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.
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公开(公告)号：EP4380023A1
公开(公告)日：2024-06-05
申请号：EP23200002.6
申请日：2023-09-27
发明人： CHO, Daewoong , YOON, Kyeseok , SON, Hosung , LEE, Sungwoo , HEO, Woonhyung , HEO, Jungwook
CPC分类号： H02M3/1588 , H02M1/0035 , H02M1/0058
摘要： 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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公开(公告)号：EP4362270A1
公开(公告)日：2024-05-01
申请号：EP23188552.6
申请日：2023-07-28
发明人： CHO, Daewoong , YOON, Kyeseok , KIM, Seunghoon , YOO, Jeongdu , LEE, Sungwoo , HEO, Jungwook
IPC分类号： H02J7/00
CPC分类号： H02J2207/2020200101 , H02J7/00714 , H02J7/00304 , H02J7/007182
摘要： 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 (1100) configured to generate a reset voltage (VRST) by comparing a ramp voltage reflecting the level of the inductor current (IIND) with an error voltage generated based on an operating condition that is out of a preset operating condition; an adaptive OCL controller (1300) configured to generate an OCL control current (IOCL) by counting a number of pulses of the OCL detection voltage and a number of pulses of the reset voltage (VRST); an oscillator (1400) configured to generate an oscillation voltage (Vosc) wherein a frequency of the oscillation voltage (Vosc) varies based on a magnitude of the OCL control current (IOCL); and a switching transistor (1800) for switching the inductor current based on the oscillation voltage.
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5.发明公开
公开(公告)号：EP4178058A1
公开(公告)日：2023-05-10
申请号：EP22205875.2
申请日：2022-11-07
发明人： CHO, Yonghwan , LEE, Sungwoo , OH, Hyoungseok , CHO, Daewoong , HEO, Jungwook
摘要： A charger integrated circuit (200) is configured to charge a battery device (100) including a first battery (110) and a second battery connected in series (120). The circuit (200) includes a direct charger (210) configured to generate a first charging current and a first current based on an input voltage (VIN) received from an input terminal (20), the first current used to generate a first system current, and a buck converter (220) 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 (200) includes a switched capacitor (230) 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 (240) configured to provide the first charging current and the second charging current to the battery device (100).
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公开(公告)号：EP4138290A1
公开(公告)日：2023-02-22
申请号：EP22191161.3
申请日：2022-08-19
发明人： YOON, Kyeseok , KO, Hyebong , SO, Jinwoo , OH, Hyoungseok , CHO, Daewoong , HEO, Jungwook
摘要： A buck converter including: a first switching element connecting an input voltage node to a switching node; a second switching element connecting the switching node to a ground node; a low drop out (LDO) voltage regulator connected to the input voltage node; a pulse width modulation (PWM) controller configured to receive a mode signal indicating an operation mode and toggle, in response to the mode signal, a first control signal for turning on the first switching element or a second control signal for turning on the second switching element; a bootstrap charger configured to receive the mode signal and toggle, in response to the mode signal, a third control signal for turning on the second switching element; and a bootstrap capacitor connecting an output node of the LDO voltage regulator to the switching node.
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