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    • 10. 发明授权
    • Apparatus, system and method for cascaded power conversion
    • 用于级联电力转换的装置,系统和方法
    • US09584028B2
    • 2017-02-28
    • US14703736
    • 2015-05-04
    • Point Somee Limited Liability Company
    • Anatoly ShteynbergHarry RodriguezBradley M. Lehman
    • H02M3/335H05B33/08H05B37/02
    • H02M3/33507H05B33/08H05B33/0815H05B37/02Y10T307/406
    • An apparatus, method, and system are provided for power conversion to supply power to a load such as a plurality of light emitting diodes. An exemplary apparatus comprises: a first power converter stage having a first power switch and a first inductive element; a second power converter stage having a second power switch and a second inductive element; a plurality of sensors; and a controller. The second power converter stage provides an output current to the load. The controller is adapted to use a sensed input voltage to determine a switching period, and is further adapted to turn the first and second power switches into an on-state at a frequency substantially corresponding to the switching period while maintaining a switching duty cycle within a predetermined range.
    • 提供了一种用于功率转换以向诸如多个发光二极管的负载供电的装置,方法和系统。 示例性装置包括:具有第一电源开关和第一电感元件的第一电力转换器级; 具有第二电源开关和第二电感元件的第二电力转换器级; 多个传感器; 和控制器。 第二个功率转换器级向负载提供输出电流。 控制器适于使用感测的输入电压来确定开关周期,并且还适于将第一和第二功率开关转换成基本对应于开关周期的频率的导通状态,同时保持开关占空比在 预定范围。