ST STEVAL-ILL013V1 80W离线LED驱动方案

ST公司的STEVAL-ILL013V1是采用L6562A的80W离线LED驱动器,LED电流可设定为350mA,700mA和1A,效率约90%,输入电压88V到265VAC,110VAC适得其反功率因素为0.99,230VAC为0.98V,通用的PWM调光输入,亮度调整在0%到100%之间,和EN55015与EN61000-3-2兼容.本文介绍了L6562A主要特性,方框图,以及80W LED驱动演示板STEVAL-ILL013V1主要特性,框图,改进型设计电路和材料清单.

L6562A: Transition-mode PFC controller

The L6562A is a current-mode PFC controller operating in Transition Mode (TM). Coming with the same pin-out as its predecessors L6561 and L6562, it offers improved performance.

The highly linear multiplier includes a special circuit, able to reduce AC input current distortion,that allows wide-range-mains operation with an extremely low THD, even over a large load range.

The output voltage is controlled by means of a voltage-mode error amplifier and an accurate (1% @TJ = 25℃) internal voltage reference.
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