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公开(公告)号：US11742753B2
公开(公告)日：2023-08-29
申请号：US16885535
申请日：2020-05-28
发明人： Hangseok Choi , Sangwoo Kang
CPC分类号： H02M3/06 , H01M10/4264 , H01M10/44 , H02J7/0045 , H02J7/00712 , H02J7/007182 , H02M3/158 , G05F1/59 , H02J7/007 , H02J7/345 , H02J2207/20
摘要： An electronic device including a voltage divider adaptively changing a voltage division ratio is provided. The electronic device comprises a rechargeable battery; a connector configured to connected the electronic device with an external electronic device; a voltage divider comprising a plurality of capacitors and a plurality of switches for switching an electrical path between each of the plurality of capacitors and the rechargeable battery, wherein the voltage divider is configured to provide three or more voltage division ratios; and a processor operably coupled with the voltage divider and the connector, wherein the processor is configured to: receive an indicator indicating a first voltage of a first power from the external electronic device; select a voltage division ratio from the three or more division ratios, based at least in part on the indicator; and control the plurality of switches on the basis of the selected voltage division ratio, and wherein the voltage divider is configured to: charge a rechargeable battery with a second voltage by dividing the first voltage according to the selected voltage division ratio.
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公开(公告)号：US11177681B2
公开(公告)日：2021-11-16
申请号：US16663733
申请日：2019-10-25
发明人： Kyoungwon Kim , Yusu Kim , Kisun Lee , Minjung Park , Seho Park , Hangseok Choi , Yongsang Yun , Chihyun Cho
摘要： An electronic device according to various embodiments may include: a coil configured to receive a signal for wirelessly obtaining power from an external electronic device; a wireless power circuit (MFC) configured to output the signal received by the coil as a DC signal; a first capacitive voltage divider circuit configured to adjust the voltage of, and to output, power according to a first voltage division ratio; a second capacitive voltage divider circuit configured to adjust the voltage of, and to output, power according to a second voltage division ratio; a controller configured to control the electronic device to provide the DC signal to at least one capacitive voltage divider circuit among the first capacitive voltage divider circuit and the second capacitive voltage divider circuit, based on a voltage value of the signal received through the coil; and a battery configured to receive another signal output from the at least one capacitive voltage divider circuit, based on the provided DC signal, thereby obtaining power.
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公开(公告)号：US12107435B2
公开(公告)日：2024-10-01
申请号：US18191512
申请日：2023-03-28
发明人： Hangseok Choi
IPC分类号： H02J50/12 , H02J50/80 , H02M7/5395
CPC分类号： H02J50/12 , H02J50/80 , H02M7/5395 , H02J2207/20
摘要： An electronic device utilizing a wireless charging system is provided. The electronic device includes a power source, a transmission coil, a full-bridge inverter electrically connected to the power source and the transmission coil, and a control circuit which communicates with an external device through the transmission coil, and controls the full-bridge inverter to transmit a power signal through the transmission coil. The control circuit may: receive, from the external device, a first control signal requesting that the power of the power signal be reduced to less than a specified power, in response to the first control signal, adjust the duty cycle of each of first to fourth gate signals for controlling the full-bridge inverter, and switch to a pulse width modulation (PWM) drive state in which an operation according to a first period and an operation according to a second period are alternately repeated.
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公开(公告)号：US20170117942A1
公开(公告)日：2017-04-27
申请号：US15398970
申请日：2017-01-05
发明人： Jinwoo KIM , Junho Kim , Seok-Hyun Kim , Hangseok Choi
CPC分类号： H04B5/0062 , H04B1/1018 , H04B5/0025
摘要： A calibrator to process an output signal of an analog digital converter in a wireless communication device, the calibrator comprising a level filter to remove noise from the output signal of the analog digital converter using mask information regulating a signal level; a timing filter to remove pulses from the level-filtered signal that are beyond a reference duty ratio by using timing information; a pattern filter to remove pulses from the timing-filtered signal that are judged to not comprise a reference number of consecutive pulses by using pattern information; and a duty correction circuit to correct a duty of the pattern-filtered signal to improve performance of the wireless communication device by separately performing a filtering operation on noise and a damping component included in a normal signal.
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公开(公告)号：US11893931B2
公开(公告)日：2024-02-06
申请号：US17992291
申请日：2022-11-22
发明人： Hangseok Choi , Sangwoo Kang
IPC分类号： G09G3/3225
CPC分类号： G09G3/3225 , G09G2330/028
摘要： An electronic device including a power supply circuit according to the disclosure may include: a battery; a display module including a display panel; a regulator; a power supply circuit configured to: based on an input voltage of the battery, provide a first voltage and a second voltage to the display module, and provide a third voltage to the regulator; and a switch control circuit configured to: control a switching operation of the power supply circuit, wherein the power supply circuit includes: a first power circuit and a second power circuit, wherein the first power circuit includes multiple switch elements, a first capacitor, a second capacitor, a third capacitor, and a first inductor, and is configured to: for a first time interval, based on a drive signal of the switch control circuit, charge the first capacitor and the second capacitor, based on a current of the first inductor and discharge the third capacitor to provide a first output current to the display module, and for a second time interval, based on a drive signal of the switch control circuit, charge the third capacitor and discharge the first capacitor and the second capacitor to provide the first output current and a second output current to the display module, and wherein the second power circuit is configured to: convert a voltage level of the input voltage of the battery to provide a second voltage to the display module.
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公开(公告)号：US11476694B2
公开(公告)日：2022-10-18
申请号：US17072198
申请日：2020-10-16
发明人： Hangseok Choi , Kisun Lee
IPC分类号： H02J7/00
摘要： An electronic device is provided that includes a battery, a power management module, and a processor electrically connected to the power management module. The power management module includes a charging circuit including a plurality of switches, a capacitor, and an inductor. The power management module receives power from an external power supply device, identifies an electrical connection between the charging circuit and the external power supply device, operates in a first mode to charge the battery when a type of the external power supply device is a first type, and operates in a second mode to charge the battery when the type of the external power supply device is a second type.
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7.发明申请公开(公告)号：US20220200310A1
公开(公告)日：2022-06-23
申请号：US17555852
申请日：2021-12-20
发明人： Hangseok Choi
IPC分类号： H02J7/00
摘要： Disclosed are an electronic device for charging a battery based on a voltage of an interface and a method for controlling the same. The electronic device for charging a battery based on a voltage of an interface, according to an embodiment, may include: an interface comprising a conductive piece, a current reference control circuit; and a charging current control circuit configured to control the magnitude of a charging current applied to the interface, based on a control signal resulting from a comparison between a charging current value applied to the interface and a first critical current value configured in the current reference control circuit, wherein the current reference control circuit is configured to, based on a voltage value applied to the interface reaching a first critical voltage value, gradually decrease the first critical current value until the voltage value applied to the interface falls below the first critical voltage value, and maintain the first critical current value based on the voltage value applied to the interface being less than the first critical voltage value.
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公开(公告)号：US20210119465A1
公开(公告)日：2021-04-22
申请号：US17072198
申请日：2020-10-16
发明人： Hangseok Choi , Kisun Lee
IPC分类号： H02J7/00
摘要： An electronic device is provided that includes a battery, a power management module, and a processor electrically connected to the power management module. The power management module includes a charging circuit including a plurality of switches, a capacitor, and an inductor. The power management module receives power from an external power supply device, identifies an electrical connection between the charging circuit and the external power supply device, operates in a first mode to charge the battery when a type of the external power supply device is a first type, and operates in a second mode to charge the battery when the type of the external power supply device is a second type.
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公开(公告)号：US12101019B2
公开(公告)日：2024-09-24
申请号：US17989144
申请日：2022-11-17
发明人： Hangseok Choi , Chuleun Yun
IPC分类号： H02M1/00 , G09G3/3225 , H02M3/07 , H02M3/158
CPC分类号： H02M1/007 , G09G3/3225 , H02M3/07 , H02M3/1582 , G09G2330/023
摘要： An electronic device is provided. The electronic device includes a display including a display driver integrated circuit (IC), a power supply device configured to supply driving power to the display, a processor operatively connected to the display driver IC and the power supply device, and a memory operatively connected to the processor. The memory may store instructions that, when executed, cause the processor to control the power supply device to supply different driving power depending on a display mode of the display.
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公开(公告)号：US11532951B2
公开(公告)日：2022-12-20
申请号：US17072211
申请日：2020-10-16
发明人： Hangseok Choi , Kisun Lee
摘要： An electronic device is provided. The electronic device includes a battery and a power management module electrically connected to the battery and configured to manage a charging or a discharging of the battery. The power management module includes a first charging circuit configured to include a first switch group, a first capacitor, and a first inductor, a second charging circuit configured to include a second switch group, a second capacitor, and a second inductor, and a power path distributor configured to distribute power from a first external power supply device or a second external power supply device to the first charging circuit or the second charging circuit.
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