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公开(公告)号：US20180054864A1
公开(公告)日：2018-02-22
申请号：US15655010
申请日：2017-07-20
发明人： Seunguk YANG , Moonsik SONG , Hyunchul EUM
IPC分类号： H05B33/08
CPC分类号： H05B33/0845 , H05B33/0812 , H05B33/0815 , H05B33/0818 , Y02B20/347
摘要： A lighting circuit includes a light emitting diode (LED), a transistor that controls a current through the LED, and a lighting controller integrated circuit (IC) that controls the transistor to vary a brightness of the LED. The controller IC has a dimming pin that receives a dimming signal. The controller IC generates a low reference threshold and a high reference threshold that follow the dimming signal. The lighting controller IC controls the transistor by hysteretic control by comparing a sense signal indicative of the current through the LED to the low reference threshold and the high reference threshold.
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公开(公告)号：US20170181237A1
公开(公告)日：2017-06-22
申请号：US15380248
申请日：2016-12-15
发明人： Minwoo LEE , Moonsik SONG
IPC分类号： H05B33/08
CPC分类号： H05B33/0845 , H05B33/0815 , H05B33/0887
摘要： A reference voltage generator disclosed herein includes an amplifier including two input terminals connected to a dimming signal and a first node, respectively, and an output terminal, a first transistor including a gate connected to the output terminal of the amplifier and one electrode connected to the first node, second and third transistors configured to form a current mirror, and two resistors connected between one electrode of the second transistor and one electrode of the first transistor.
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公开(公告)号：US20170181236A1
公开(公告)日：2017-06-22
申请号：US15380254
申请日：2016-12-15
发明人： Minwoo LEE , Moonsik SONG , Seunguk YANG
IPC分类号： H05B33/08
CPC分类号： H05B33/0815 , H05B33/083 , H05B33/0845 , Y02B20/346
摘要： A light emitting diode (LED) driving circuit disclosed herein controls a switching operation of a power switch connected to an LED string and includes a reference voltage generator configured to generate a frequency modulation reference voltage according to a dimming signal that controls brightness of the LED string, and a switching controller configured to control a switching frequency of the power switch to be constant when a level of the dimming signal is higher than that of the frequency modulation reference voltage, and control the switching frequency of the power switch based on the dimming signal when a level of the dimming signal is lower than that of the frequency modulation reference voltage.
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4.发明申请公开(公告)号：US20140239897A1
公开(公告)日：2014-08-28
申请号：US14189495
申请日：2014-02-25
发明人： Moonsik SONG , Seok HEO
CPC分类号： H02J7/0034 , G01R31/362 , G01R31/3658 , H02J7/0021
摘要： Disclosed are a voltage measuring apparatus and a battery management system including the same. The voltage measuring apparatus is connected to a plurality of battery cells connected to each other in series to measure respective voltage of the battery cells. The voltage measuring apparatus includes a first node coupled to one of an positive electrode and a negative electrode of one of a plurality of battery cells as a voltage measuring target, amplifies a voltage difference between the first node and the second node to generate an error voltage, converts the error voltage into a digital signal, and compensates for a polarity of the digital signal.
摘要翻译： 公开了一种电压测量装置和包括该电压测量装置的电池管理系统。 电压测量装置连接到彼此串联的多个电池单元，以测量电池单元的相应电压。 电压测量装置包括耦合到作为电压测量对象的多个电池单元之一的正电极和负电极之一的第一节点，放大第一节点和第二节点之间的电压差以产生误差电压 将误差电压转换为数字信号，并补偿数字信号的极性。
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公开(公告)号：US20130249607A1
公开(公告)日：2013-09-26
申请号：US13850563
申请日：2013-03-26
发明人： Gyoung-Soo PARK , Seung-Woo HONG , Moonsik SONG , Sehwan KIM
IPC分类号： H03K17/30
CPC分类号： H03K17/30 , H03K2217/0054
摘要： The present invention relates to a bootstrap switch circuit and a driving method thereof. The bootstrap switch circuit includes: an input transistor including a first electrode for receiving an input voltage; an output transistor including a second electrode connected to a second electrode of the input transistor, and a first electrode for outputting an output voltage; a control transistor including a control electrode connected to the second electrode of the input transistor and the second electrode of the output transistor, and a first electrode for receiving a power supply voltage; and a level shifter including a power input terminal connected to the second electrode of the control transistor, an output terminal connected to a control electrode of the input transistor and a control electrode of the output transistor, and an input terminal for receiving a switch control signal. The level shifter turns on the input transistor and the output transistor when the switch control signal is an enable level, and it turns off the input transistor and the output transistor when the switch control signal is a disable level.
摘要翻译： 本发明涉及自举开关电路及其驱动方法。 自举开关电路包括：输入晶体管，包括用于接收输入电压的第一电极; 输出晶体管，包括连接到所述输入晶体管的第二电极的第二电极和用于输出输出电压的第一电极; 控制晶体管，包括连接到输入晶体管的第二电极和输出晶体管的第二电极的控制电极和用于接收电源电压的第一电极; 以及电平移位器，包括连接到控制晶体管的第二电极的电源输入端子，连接到输入晶体管的控制电极的输出端子和输出晶体管的控制电极，以及用于接收开关控制信号的输入端子 。 当开关控制信号为使能电平时，电平转换器接通输入晶体管和输出晶体管，当开关控制信号为禁止电平时，电平转换器关闭输入晶体管和输出晶体管。
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公开(公告)号：US20170354003A1
公开(公告)日：2017-12-07
申请号：US15601034
申请日：2017-05-22
发明人： Minwoo LEE , Moonsik SONG , Seunguk YANG
CPC分类号： H05B33/0815 , H05B33/083 , H05B33/0842 , H05B33/0851 , H05B37/02
摘要： A light emitting diode (LED) control circuit includes an inductor current sense circuit with a high-side diode string, a low-side diode string, and a sense resistor in series with and between the high-side and low side diode strings. The LED control circuit receives an input voltage on an end that connects to the high-side diode string. An end of the low-side diode string is connected to a switch through an inductor. A sense voltage developed on the sense resistor by an inductor current is sensed by a controller integrated circuit (IC). A pin of the controller IC that receives the sense voltage can have a breakdown voltage specification that is lower than the input voltage.
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7.发明申请公开(公告)号：US20140239966A1
公开(公告)日：2014-08-28
申请号：US14189212
申请日：2014-02-25
发明人： Moonsik SONG , Seok HEO
IPC分类号： G01R31/36
CPC分类号： G01R31/3658 , H02J7/0016 , H02J7/0021 , H02J7/0047
摘要： The voltage measuring apparatus is connected to a plurality of battery cells connected to each other in series to measure respective voltages of the battery cells. The voltage measuring apparatus includes a sample/hold amplifier configured to sample and hold positive electrode and negative electrode voltages of the battery cells to generate first and second output voltages, a differential voltage converter configured to generate a battery cell voltage according to a voltage difference between a positive input terminal and a negative input terminal, and a switching unit configured to control the first and second output voltages and connection between the positive input terminal and the negative input terminal so that a polarity of the voltage difference is constant. The sample/hold amplifier electrically insulates the switching unit from the battery cells.
摘要翻译： 电压测量装置连接到彼此串联连接的多个电池单元，以测量电池单元的各个电压。 电压测量装置包括：采样/保持放大器，被配置为采样和保持电池单元的正极和负极电压，以产生第一和第二输出电压;差分电压转换器，被配置为根据电池单元的电压差产生电池单体电压; 正输入端子和负输入端子，以及开关单元，被配置为控制第一和第二输出电压以及正输入端子和负输入端子之间的连接，使得电压差的极性恒定。 采样/保持放大器使开关单元与电池单元电绝缘。
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