[原创] Fairchild FL7733A通用电压输入50W LED驱动解决方案

Fairchild公司的FL7733A是采用先进的初级边调整(PSR)的高度集成PWM控制器,最大限度地降低中低功率LED照明转换器的元件数量.所有条件下的总电流误差小于±3%,通用输入电压80 VAC-308 VAC变化小于±1%,从50%到100%的负载变化小于±1%,磁性电感变化±20%输出变化小于±1%.本文介绍了FL7733A主要特性,框图,50W LED驱动器主要指标,电路图,材料清单和PCB设计图.

The FL7733A is a highly-integrated PWM controller with advanced Primary-Side Regulation (PSR) technique to minimize components in low-to-mid-power LED lighting converters.

Using an innovative TRUECURRENT® technology to provide tight tolerance constant-current output, this LED driver enables designs with constant current (CC) tolerance of less than ±1% over the universal line voltage range to meet stringent LED brightness requirements.
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