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11 条记录 (耗时 0.04 秒)

    MULTIPLE LINEAR REGULATION
    1.
    发明申请
    MULTIPLE LINEAR REGULATION 审中-公开

    公开(公告)号：US20170354002A1

    公开(公告)日：2017-12-07

    申请号：US15604137

    申请日：2017-05-24

    申请人： FAIRCHILD KOREA SEMICONDUCTOR, LTD.

    发明人： Hyun-Chul EUM ,  Young-Jong KIM

    IPC分类号： H05B33/08

    CPC分类号： H05B33/0809 ,  H05B33/083 ,  H05B33/0845

    摘要： A circuit comprises an amplifier and a plurality of channels, the plurality of channels including respective transistors. The respective transistors of the channels control respective magnitudes of respective currents of the channels according to an output of the amplifier. The respective transistors of the plurality of channels may be included in an auto-commutated circuit. A first Light Emitting Diode (LED) circuit may be coupled between a power source and a first channel of the plurality of channels. A second LED circuit may be coupled between the first channel and a second channel of the plurality of LED channels. The power source may provide rectified Alternating Current (AC).

    POWER SUPPLY DEVICE
    2.
    发明申请
    POWER SUPPLY DEVICE 有权
    电源设备

    公开(公告)号：US20160006360A1

    公开(公告)日：2016-01-07

    申请号：US14853525

    申请日：2015-09-14

    申请人： FAIRCHILD KOREA SEMICONDUCTOR LTD.

    发明人： Hyun-Chul EUM ,  Young-Jong KIM ,  In-Ki PARK

    IPC分类号： H02M3/335

    CPC分类号： H02M3/33507 ,  H02M1/4258 ,  Y02B70/126

    摘要： A power supply device according to the present invention includes: a filter capacitor coupled to a line to which an input voltage that is passed through a dimmer is supplied; a discharge switch coupled to the filter capacitor through the line; and a main switch receiving the input voltage and controlling power transmission. The power supply device performs input voltage control for shaping the input voltage with a predetermined pattern using the discharge switch.

    摘要翻译： 根据本发明的电源装置包括：滤波电容器，被耦合到提供通过调光器的输入电压的线路; 放电开关，通过线耦合到滤波电容器; 以及接收输入电压并控制电力传输的主开关。 电源装置利用放电开关，以规定的模式对输入电压进行整形，进行输入电压控制。

    POWER SUPPLY
    3.
    发明申请
    POWER SUPPLY 有权
    电源

    公开(公告)号：US20150009722A1

    公开(公告)日：2015-01-08

    申请号：US14324704

    申请日：2014-07-07

    申请人： FAIRCHILD KOREA SEMICONDUCTOR LTD.

    发明人： Hyun-Chul EUM ,  Young-Jong KIM ,  In-Ki PARK

    IPC分类号： H02M3/335

    CPC分类号： H02M3/33507 ,  H02M1/4258 ,  H02M2001/0016 ,  H02M2001/0019 ,  H05B33/0815 ,  Y02B70/126

    摘要： Provided is regulation of a line current. The regulation of the line current includes comparing a reference voltage with a line sensing voltage to generate a feedback voltage, and controlling a switching operation of a power switch using the feedback voltage. The reference voltage may be a voltage having a constant level, a voltage which varies according to an output current, or a voltage which follows a sine wave to compensate a power factor. Provided is sensing of an output current. The sensing of the output current includes sensing the output current using a feedback voltage corresponding to a voltage between both terminals of an inductor connected to a power switch, a peak of current flowing through the power switch, and a switching cycle of the power switch.

    摘要翻译： 提供线路电流的调节。 线路电流的调节包括将参考电压与线路感测电压进行比较以产生反馈电压，以及使用反馈电压来控制功率开关的开关操作。 参考电压可以是具有恒定电平的电压，根据输出电流而变化的电压或者是跟随正弦波的电压以补偿功率因数。 提供输出电流的感测。 输出电流的感测包括使用对应于连接到电源开关的电感器的两个端子之间的电压的反馈电压，流过电源开关的电流的峰值和电源开关的开关周期来感测输出电流。

    ACTIVE DAMPER AND POWER SUPPLY INCLUDING THE SAME
    4.
    发明申请
    ACTIVE DAMPER AND POWER SUPPLY INCLUDING THE SAME 有权
    主动阻尼器和电源包括它们

    公开(公告)号：US20150124499A1

    公开(公告)日：2015-05-07

    申请号：US14527033

    申请日：2014-10-29

    申请人： FAIRCHILD KOREA SEMICONDUCTOR LTD.

    发明人： Hyun-Chul EUM ,  Young-Jong KIM

    IPC分类号： H02M1/32 ,  H02M3/335

    CPC分类号： H02M1/32 ,  H02M3/335 ,  H02M2001/348

    摘要： An active damper and a power supply according to exemplary embodiments include: a damper resistor coupled to an input voltage; a damper switch coupled in parallel with the damper resistor; and a capacitor to which a reset current generated by a leading edge of the input voltage flows. The damper switch is turned off by the reset current.

    摘要翻译： 根据示例性实施例的主动阻尼器和电源包括：耦合到输入电压的阻尼电阻器; 与阻尼电阻器并联耦合的阻尼开关; 以及由输入电压的前沿产生的复位电流流过的电容器。 风门开关由复位电流关闭。

    POWER SUPPLY DEVICE
    5.
    发明申请
    POWER SUPPLY DEVICE 有权
    电源设备

    公开(公告)号：US20140009973A1

    公开(公告)日：2014-01-09

    申请号：US13920448

    申请日：2013-06-18

    申请人： Fairchild Korea Semiconductor Ltd.

    发明人： Hyun-Chul EOM ,  Young-Jong KIM ,  In-Ki PARK

    IPC分类号： H02M3/335

    CPC分类号： H02M3/33507 ,  H02M1/4258 ,  Y02B70/126

    摘要： An exemplary embodiment of the present invention relates to a power supply. A power supply according to an exemplary embodiment of the present invention includes: a filter capacitor coupled to a line to which an input voltage rectified from an AC input passed through a dimmer is supplied; a discharge switch coupled to the filter capacitor through the line; and a main switch receiving the input voltage and controlling power transmission. The power supply performs input voltage control to shape the input voltage with a predetermined pattern and controls a switching operation time of the main switch.

    摘要翻译： 本发明的示例性实施例涉及电源。 根据本发明的示例性实施例的电源包括：滤波电容器，耦合到从通过调光器的AC输入整流的输入电压被提供给的线; 放电开关，通过线耦合到滤波电容器; 以及接收输入电压并控制电力传输的主开关。 电源执行输入电压控制，以预定模式对输入电压进行调整，并控制主开关的开关操作时间。

    LED DRIVER CIRCUIT AND LED DRIVING METHOD
    6.
    发明申请
    LED DRIVER CIRCUIT AND LED DRIVING METHOD 审中-公开

    公开(公告)号：US20180014369A1

    公开(公告)日：2018-01-11

    申请号：US15626307

    申请日：2017-06-19

    申请人： FAIRCHILD KOREA SEMICONDUCTOR LTD.

    发明人： Young-Jong KIM ,  Hyun-Chul EUM

    IPC分类号： H05B33/08

    CPC分类号： H05B33/0812 ,  H05B33/083 ,  H05B33/0845 ,  H05B33/089

    摘要： A light emitting diode (LED) driver circuit includes an LED string and a conducting state detection circuit. The conducting state detection circuit detects a conducting state of the LED string, and generates a discharge control signal upon sensing that the LED string is in a non-conducting state. A current source generates a discharge current according to the discharge control signal when the LED string is in the non-conducting state. A passive bleeder provides current compensation by internal regulator operation. An LED spike current suppression circuit suppresses spike current that can occur when the input voltage increases above a threshold. A bias supply circuit has an input capacitor that provides a bias voltage.

    OVERLOAD PROTECTION FOR POWER CONVERTER
    8.
    发明申请
    OVERLOAD PROTECTION FOR POWER CONVERTER 审中-公开

    公开(公告)号：US20170353103A1

    公开(公告)日：2017-12-07

    申请号：US15604129

    申请日：2017-05-24

    申请人： FAIRCHILD KOREA SEMICONDUCTOR, LTD.

    发明人： Hyun-Chul EUM ,  Young-Jong KIM

    IPC分类号： H02M1/32 ,  H02M1/08 ,  H02M3/335 ,  H02M1/00

    摘要： A method includes comparing a value of a current sense signal indicating an output signal of a power converter to a value of a threshold signal, adjusting a value of a first count signal in response to the comparison result, and determining whether or not the power converter is operating in an overload condition using the first count signal. A circuit includes an overload monitor comparing a value of a current sense signal to a value of a threshold signal, adjusting a value of a first count signal in response to the comparison result, and determining whether or not the power converter is operating in an overload condition using the first count signal. The circuit further includes an overload protection signal generator generating an overload protection signal indicating whether or not the power converter is operating in the overload condition.