Powerint LNK457DG RDR251 5W TRIAC调光LED驱动方案

Powerint公司的LNK454/456-458/460 LinkSwitch-PL系列具有小型体积和低成本的单级PFC的恒流驱动器,集成了725V功率MOSFER,新颖的不连续模式可变频率控制器,频率抖动器,逐个周期的电流限制和滞后的热关断.输入电压很宽,输出功率高达16W.本文介绍了LNK454/456-458/460产品亮点,方框图以及5W 15V LED驱动器电路图,采用LNK4570的5W可调光PFC LED驱动器(非隔离)参考设计电路图,变压器电路图和材料清单.

Reference Design Report for a 5 W Dimmable Power Factor Corrected LED Driver (Non-Isolated) Using LinkSwitchTM-PL LNK457DG LNK454/456-458/460 LinkSwitch-PL Family LED Driver IC with TRIAC Dimming, Single-Stage PFC and Constant Current Control for Non-Isolated Applications

The LinkSwitch-PL family enables a very small and low cost single-stage power factor corrected constant current driver for solid state lighting. Optimized for direct LED current sensing, the LinkSwitch-PL operates over a wide input voltage range delivering an output power of up to 16 W. The LinkSwitch-PL control algorithm provides flicker-free TRIAC dimming with minimal external components.
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