用于驱动发光二极管的多电源装置

Multi power supply apparatus for driving light emitting diodes

Abstract

提供了一种用于驱动发光二极管的多电源装置,其与多输出功率的一个输出功率的频率同步以控制该多输出功率的切换,并且在供应用于驱动发光二极管的功率时简化功率转换。该用于驱动发光二极管的多电源装置包括:功率转换器,其根据预设第一转换方案来将输入功率转换为第一功率,并且根据设置为与该第一转换方案不同的第二转换方案来将该输入功率转换为第二功率;第一驱动器和第二驱动器,其从该功率转换器接收第一功率和第二功率,以驱动发光二极管;反馈单元,其反馈来自该第一LED驱动器和第二LED驱动器的检测信号;以及功率转换控制器,其根据来自该反馈单元的该检测信号来控制该功率转换器的第一功率的功率转换切换频率,并且与功率转换切换频率同步以控制该转换器的该第二功率的占空比。
There is provided a multi power supply apparatus for driving light emitting diodes that is synchronized with a frequency of one output power of multi output power to control a switching of the multi output power and simplifies power conversion in supplying power for driving light emitting diodes. The multi power supply apparatus for driving light emitting diodes includes a power converter that converts an input power into a first power according to a preset first conversion scheme and converts the input power into a second power according to a second conversion scheme set to be different from the first conversion scheme; first and second drivers that receive the first power and the second power from the power converter to drive light emitting diodes; a feedback unit that feedbacks detection signal from the first and second LED drivers; and a power conversion controller that controls a power conversion switching frequency of the first power of the power converter according to the detection signal from the feedback unit and is synchronized with the power conversion switching frequency to control a duty of the second power of the converter.

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