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    • 24. 发明申请
    • METHOD AND APPARATUS FOR AN INTELLIGENT LIGHT EMITTING DIODE DRIVER HAVING POWER FACTOR CORRECTION CAPABILITY
    • 具有功率因数校正能力的智能发光二极管驱动器的方法和装置
    • WO2011090635A1
    • 2011-07-28
    • PCT/US2010/061011
    • 2010-12-17
    • ATMEL CORPORATIONSANTO, HendrikSCHINDLER, Matthew, D.S, DilipDHAYAGUDE, Tushar
    • SANTO, HendrikSCHINDLER, Matthew, D.S, DilipDHAYAGUDE, Tushar
    • H05B33/08
    • H05B33/0851G09G3/342H05B33/0842
    • The present invention relates to circuits and methods for controlling one or more LED strings. The circuit comprises a programmable controller coupled to one or more detectors, wherein the one or more detectors are configured to detect one or more measurable parameters of one or more LEDs or LED drivers. The controller is configured to receive information from the one or more detectors related to the one or more measurable parameters and use that information to determine the desired drive voltage for the LED strings. The controller is associated with a power supply having power factor correction (PFC) capability. The controller provides the power supply with a control signal indicative of the desired drive voltage for one or more LED strings. The power supply also receives ac voltage and current waveforms as inputs and performs power factor correction and rectified waveforms related to the ac waveforms. The power supply generates the desired drive voltage based on the control signal.
    • 本发明涉及用于控制一个或多个LED串的电路和方法。 电路包括耦合到一个或多个检测器的可编程控制器,其中所述一个或多个检测器被配置为检测一个或多个LED或LED驱动器的一个或多个可测量的参数。 控制器被配置为从与一个或多个可测量参数相关的一个或多个检测器接收信息,并使用该信息来确定LED串所需的驱动电压。 控制器与具有功率因数校正(PFC)能力的电源相关联。 控制器为电源提供指示一个或多个LED串的期望驱动电压的控制信号。 电源还接收交流电压和电流波形作为输入,并进行与交流波形相关的功率因数校正和整流波形。 电源根据控制信号产生所需的驱动电压。