Powerint LNK460VG 100W A19 LED灯电源方案（DER322）
Powerint公司的DER322参考设计采用LinkSwitch-PL系列LNK460VG器件，是业界首个可替代100W A19白炽灯的LED驱动器，采用单层PCB，具有低成本少元件数和小尺寸特点，230VAC时的效率大于93%，PF大于0.9，230 VAC; 78 V LED时的THD小于20%，集成了包保护和可靠性特性，热关断自动恢复。本文介绍了LinkSwitch-PL系列产品亮点，方框图，典型应用电路以及DER322参考设计主要特性和指标，电路图，材料清单和PCB布局图。
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.
Each device incorporates a 725 V rated power MOSFET, a novel discontinuous mode variable frequency variable on-time controller, frequency jitter, cycle by cycle current limit and hysteretic thermal shutdown in a monolithic 4-pin IC, available in SO-8C, eSOP-12, and eDIP-12 packages.
LinkSwitch-PL系列产品亮点：
Dramatically Simplifies Off-line LED Drivers
• Flicker-free phase-controlled TRIAC dimming
• Single stage power factor correction and accurate constant current (CC) output
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