[原创] Fairchild FL7733A 8.4W通用输入LED驱动设计方案

Fairchild公司的FL7733A是具有初级边稳压(PSR)技术的高度集成PWM控制器,能最大限度降低中低功率LED照明转换器的元件.所有条件下的恒流误差±3%,通用输入电压变化±1%,磁性电感变化±20%是为±1%,负载电压50%到100%变化是为±1%,输入电压80 VAC - 308 VAC,PF达0.9,并具有多种保护特性.本文介绍了FL7733A主要特性和框图,典型应用电路, 50W设计案例电路图和材料清单,以及通用输入8.4W LED驱动器电路图,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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