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公开(公告)号：US20210336623A1
公开(公告)日：2021-10-28
申请号：US17216849
申请日：2021-03-30
发明人： JEONG KWANG LEE , Ho Jun YU , Kwang Chan LEE
摘要： A semiconductor device includes a clock generator which receives an input clock and generates an output clock, a reference voltage generator which receives the input clock or the output clock, generates a sub-reference voltage in accordance with a frequency of the input clock or a frequency of the output clock, and generates a reference voltage using the sub-reference voltage and a preset error voltage, and a clock detector which receives the output clock, generates a first output voltage in accordance with the output clock, and compares the generated first output voltage with the reference voltage to output an error signal based on the output clock, wherein the preset error voltage is set in accordance with a degree of preset error of the output clock.
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公开(公告)号：US20220085716A1
公开(公告)日：2022-03-17
申请号：US17536810
申请日：2021-11-29
发明人： Kwang Chan LEE , Hyoungseok OH , Hojun YU , Jeongkwang LEE , Jungwook HEO
摘要： 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：US20210075318A1
公开(公告)日：2021-03-11
申请号：US16850413
申请日：2020-04-16
发明人： Kwang Chan LEE , Hyoungseok OH , Hojun YU , Jeongkwang LEE , Jungwook HEO
IPC分类号： H02M3/07
摘要： 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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4.发明申请公开(公告)号：US20180123373A1
公开(公告)日：2018-05-03
申请号：US15604852
申请日：2017-05-25
发明人： Sungwoo LEE , Hyoungseok OH , Kwang Chan LEE
IPC分类号： H02J7/00 , H02J7/02 , H03K17/567 , G06Q20/32
CPC分类号： H02J7/0068 , G06Q20/327 , H02J7/0034 , H02J7/0052 , H02J7/008 , H02J7/025 , H02J50/10 , H03K17/567
摘要： 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.
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公开(公告)号：US20220103072A1
公开(公告)日：2022-03-31
申请号：US17332436
申请日：2021-05-27
发明人： Kwang Chan LEE , Dongho SHIN , Chang Seok CHAE
摘要： Disclosed is an electronic device, which includes a direct voltage to direct voltage converter, and a controller that receives first current information, second current information, an input voltage, and a feedback voltage from the direct voltage to direct voltage converter, controls the direct voltage to direct voltage converter based on the input voltage in one of a first mode, a second mode, or a third mode, controls the direct voltage to direct voltage converter based on the first current information and an output voltage such that buck conversion is performed in the first mode and the second mode, and controls the direct voltage to direct voltage converter based on the second current information and the output voltage such that boost conversion is performed in the second mode and the third mode.
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6.发明申请公开(公告)号：US20200059108A1
公开(公告)日：2020-02-20
申请号：US16665189
申请日：2019-10-28
发明人： Sungwoo LEE , Hyoungseok OH , Kwang Chan LEE
IPC分类号： H02J7/00 , H03K17/567 , H02J7/02 , G06Q20/32 , H02J50/10
摘要： 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.
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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
发明人： Kwang Chan LEE , Sungwoo Lee , Jungwook Heo , Hyoungseok Oh , Jiheon Kang , Hocheol Chung
CPC分类号： H02M1/088 , H02M1/08 , H02M3/155 , H02M3/156 , H02M2001/0006 , H02M2001/0035 , H03K17/063 , H03K2217/0081
摘要： 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：US20180301911A1
公开(公告)日：2018-10-18
申请号：US15867893
申请日：2018-01-11
发明人： Sung Kyu CHO , Hyoung seok OH , Kwang Chan LEE , Dae Woong CHO , Jung Wook HEO
IPC分类号： H02J7/00
摘要： The semiconductor device including first and second transistors configured to provide a first voltage to a first node, the first voltage being a voltage provided from a travel adaptor (TA), a third transistor connected in series with the second transistor and configured to provide a ground voltage to the first node, and a fourth transistor configured to receive a second voltage from a first inductor connected to the first node, and provide the second voltage to a second node as a third voltage for charging a battery connected thereto may be provided.
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