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    Primary side PFC driver with dimming capability
    3.
    发明授权
    Primary side PFC driver with dimming capability 有权
    具有调光能力的初级侧PFC驱动器

    公开(公告)号：US08502474B2

    公开(公告)日：2013-08-06

    申请号：US13249158

    申请日：2011-09-29

    申请人： Jeff Kotowski ,  Charles Cai ,  Ranajit Ghoman

    发明人： Jeff Kotowski ,  Charles Cai ,  Ranajit Ghoman

    IPC分类号： G05F1/00

    CPC分类号： H05B33/0815 ,  H02M1/4225 ,  Y02B20/346 ,  Y02B70/126

    摘要： A primary side PFC driver circuit is disclosed that includes a switch control circuit for commanding a switch to allow an inductor coupled to an output load (e.g., LEDs) to transfer energy provided by an input voltage source. The switch control circuit provides two signals for commanding the switch. A first signal having a first frequency, with a duty cycle in proportion to the input voltage amplitude, commands the switch to allow the average input current to be proportional to the input voltage amplitude. A second signal having a second frequency higher than the first frequency pulses the output load with substantially constant current pulses based on a value of the first signal (e.g., while the first signal is high). The current pulses produce a substantially constant current in the output load.

    摘要翻译： 公开了一种初级侧PFC驱动器电路，其包括用于命令开关允许耦合到输出负载（例如，LED）的电感器传递由输入电压源提供的能量的开关控制电路。 开关控制电路提供两个指示开关的信号。 具有与输入电压幅度成比例的占空比的具有第一频率的第一信号命令开关允许平均输入电流与输入电压幅度成正比。 具有高于第一频率的第二频率的第二信号基于第一信号的值（例如，当第一信号为高时）以基本上恒定的电流脉冲来脉冲输出负载。 电流脉冲在输出负载中产生基本恒定的电流。

    Power conversion feedback control circuit for reaching a goal voltage
    4.
    发明授权
    Power conversion feedback control circuit for reaching a goal voltage 有权
    用于达到目标电压的功率转换反馈控制电路

    公开(公告)号：US08912770B2

    公开(公告)日：2014-12-16

    申请号：US13289603

    申请日：2011-11-04

    申请人： Charles Cai ,  Jeff Kotowski ,  Kien Vi

    发明人： Charles Cai ,  Jeff Kotowski ,  Kien Vi

    IPC分类号： G05F1/563 ,  H02M3/158 ,  H05B37/02 ,  H02M3/156

    CPC分类号： H02M3/158 ,  H02M3/156 ,  H05B33/0812 ,  H05B33/0815 ,  H05B33/0842 ,  H05B37/02 ,  Y02B20/343 ,  Y02B20/42 ,  Y10S323/901

    摘要： A power conversion circuit of two feedback loops is disclosed that includes a feedback control circuit for ramping up or down a commanded voltage to a load (e.g., LEDs). The second feedback loop feeds into the first feedback loop, and the second feedback loop operates at a slower bandwidth than the first feedback loop. When ramping up or down the commanded voltage, a voltage overshoot results because of delay in the system. The overshoot can be compensated for by a final adjustment to the commanded voltage.

    摘要翻译： 公开了两个反馈回路的功率转换电路，其包括用于将指令电压上升或下降到负载（例如，LED）的反馈控制电路。 第二反馈环馈入第一反馈环路，第二反馈环路以比第一反馈环路更慢的带宽工作。 当升高或降低指令电压时，由于系统的延迟而导致电压过冲。 可以通过对指令电压进行最终调整来补偿过冲。

    Primary side PFC driver with dimming capability
    5.
    发明授权
    Primary side PFC driver with dimming capability 有权
    具有调光能力的初级侧PFC驱动器

    公开(公告)号：US08736190B2

    公开(公告)日：2014-05-27

    申请号：US13427779

    申请日：2012-03-22

    申请人： Jeff Kotowski ,  Charles Cai ,  Ranajit Ghoman

    发明人： Jeff Kotowski ,  Charles Cai ,  Ranajit Ghoman

    IPC分类号： H05B41/16

    CPC分类号： H05B33/0815 ,  H02M1/4225 ,  Y02B20/346 ,  Y02B70/126

    摘要： A primary side PFC driver circuit is disclosed that includes a switch control circuit for commanding a switch to allow an inductor coupled to an output load (e.g., LEDs) to transfer energy provided by an input voltage source. The switch control circuit provides two signals for commanding the switch. A first signal having a first frequency, with a duty cycle in proportion to the input voltage amplitude, commands the switch to allow the average input current to be proportional to the input voltage amplitude. A second signal having a second frequency higher than the first frequency pulses the output load with substantially constant current pulses based on a value of the first signal (e.g., while the first signal is high). The current pulses produce a substantially constant current in the output load.

    摘要翻译： 公开了一种初级侧PFC驱动器电路，其包括用于命令开关允许耦合到输出负载（例如，LED）的电感器传递由输入电压源提供的能量的开关控制电路。 开关控制电路提供两个指示开关的信号。 具有与输入电压幅度成比例的占空比的具有第一频率的第一信号命令开关允许平均输入电流与输入电压幅度成正比。 具有高于第一频率的第二频率的第二信号基于第一信号的值（例如，当第一信号为高时）以基本上恒定的电流脉冲来脉冲输出负载。 电流脉冲在输出负载中产生基本恒定的电流。

    PRIMARY SIDE PFC DRIVER WITH DIMMING CAPABILITY
    6.
    发明申请
    PRIMARY SIDE PFC DRIVER WITH DIMMING CAPABILITY 有权

    公开(公告)号：US20130083578A1

    公开(公告)日：2013-04-04

    申请号：US13427779

    申请日：2012-03-22

    申请人： Jeff Kotowski ,  Charles Cai ,  Ranajit Ghoman

    发明人： Jeff Kotowski ,  Charles Cai ,  Ranajit Ghoman

    IPC分类号： H02M7/06

    CPC分类号： H05B33/0815 ,  H02M1/4225 ,  Y02B20/346 ,  Y02B70/126

    摘要： A primary side PFC driver circuit is disclosed that includes a switch control circuit for commanding a switch to allow an inductor coupled to an output load (e.g., LEDs) to transfer energy provided by an input voltage source. The switch control circuit provides two signals for commanding the switch. A first signal having a first frequency, with a duty cycle in proportion to the input voltage amplitude, commands the switch to allow the average input current to be proportional to the input voltage amplitude. A second signal having a second frequency higher than the first frequency pulses the output load with substantially constant current pulses based on a value of the first signal (e.g., while the first signal is high). The current pulses produce a substantially constant current in the output load.

    Self-Power for Device Driver
    7.
    发明申请
    Self-Power for Device Driver 有权
    设备驱动程序的自备电源

    公开(公告)号：US20130147358A1

    公开(公告)日：2013-06-13

    申请号：US13314069

    申请日：2011-12-07

    申请人： Jeff Kotowski ,  Timothy James Herklots ,  Charles Cai

    发明人： Jeff Kotowski ,  Timothy James Herklots ,  Charles Cai

    IPC分类号： H05B37/02

    CPC分类号： H05B33/0818

    摘要： The disclosed implementations utilize the voltage drop inherent in the device string to power a device control IC. In some implementations, current is drawn from the bottom of the device string and applied to a voltage supply pin of the device control IC. In some implementations, current is drawn from some other location in the device string (e.g., near the bottom or midpoint of the device string) using a switch. In some implementations, current is drawn from near the bottom and the bottom of the device string at different times, such that less current is drawn from the bottom of the device string as the duty cycle of the device string increases and more current is drawn from near the bottom of the device string as the duty cycle of the device string increases.

    摘要翻译： 所公开的实现使用设备串中固有的电压降来为器件控制IC供电。 在一些实施方式中，电流从器件串的底部抽出并施加到器件控制IC的电压引脚。 在一些实施方式中，使用开关从设备串中的某个其他位置（例如，设备串的底部或中点附近）绘出电流。 在一些实施方式中，在不同时间从设备串的底部和底部接近电流，从而当器件串的占空比增加并且从 靠近设备串的底部，随着设备串的占空比增加。

    Color Correcting Device Driver
    8.
    发明申请
    Color Correcting Device Driver 有权
    颜色校正设备驱动程序

    公开(公告)号：US20130113381A1

    公开(公告)日：2013-05-09

    申请号：US13291943

    申请日：2011-11-08

    申请人： Charles Cai ,  Jeff Kotowski ,  Timothy James Herklots

    发明人： Charles Cai ,  Jeff Kotowski ,  Timothy James Herklots

    IPC分类号： H05B37/02

    CPC分类号： H05B33/0815 ,  H05B33/0827

    摘要： A color correcting device driver is configured to vary the equivalent current into light emitting elements (e.g., LEDs) with the frequency of the AC input current (e.g., 120 Hz). In implementations that include a fly-back controller with a power factor correction (PFC) controller on the primary side, the color correcting device driver performs the method of: 1) turning on the loads (e.g., white and CA strings of LEDs); 2) determining if the voltage supplied to the loads has dropped by a first threshold amount; 3) turning off the loads; and 4) determining if the voltage supplied to loads has recovered by a second threshold amount (or waiting for a fixed amount of time). The method is repeated. In implementations that do not include a PFC controller on the primary side, the color correcting device driver can create a pulse width modulated (PWM) signal.

    摘要翻译： 颜色校正装置驱动器被配置为将等效电流改变为具有AC输入电流（例如，120Hz）的频率的发光元件（例如，LED）。 在包括在初级侧具有功率因数校正（PFC）控制器的回扫控制器的实施方案中，色彩校正装置驱动器执行以下方法：1）打开负载（例如，LED的白色和CA串）; 2）确定提供给负载的电压是否下降了第一阈值; 3）关闭负载; 以及4）确定提供给负载的电压是否恢复了第二阈值（或等待固定的时间量）。 重复该方法。 在不包括初级侧的PFC控制器的实现中，颜色校正装置驱动器可以创建脉宽调制（PWM）信号。

    Self-power for device driver
    10.
    发明授权
    Self-power for device driver 有权
    设备驱动程序的自供电

    公开(公告)号：US08604699B2

    公开(公告)日：2013-12-10

    申请号：US13314069

    申请日：2011-12-07

    申请人： Jeff Kotowski ,  Timothy James Herklots ,  Charles Cai

    发明人： Jeff Kotowski ,  Timothy James Herklots ,  Charles Cai

    IPC分类号： H05B37/02

    CPC分类号： H05B33/0818

    摘要： The disclosed implementations utilize the voltage drop inherent in the device string to power a device control IC. In some implementations, current is drawn from the bottom of the device string and applied to a voltage supply pin of the device control IC. In some implementations, current is drawn from some other location in the device string (e.g., near the bottom or midpoint of the device string) using a switch. In some implementations, current is drawn from near the bottom and the bottom of the device string at different times, such that less current is drawn from the bottom of the device string as the duty cycle of the device string increases and more current is drawn from near the bottom of the device string as the duty cycle of the device string increases.

    摘要翻译： 所公开的实现使用设备串中固有的电压降来为器件控制IC供电。 在一些实施方式中，电流从器件串的底部抽出并施加到器件控制IC的电压引脚。 在一些实施方式中，使用开关从设备串中的某个其他位置（例如，设备串的底部或中点附近）绘出电流。 在一些实施方式中，在不同时间从设备串的底部和底部接近电流，从而当器件串的占空比增加并且从 靠近设备串的底部，随着设备串的占空比增加。