Powerint LNK605DG 4.2W LED驱动方案

Powerint 公司的4.2W LED驱动方案是采用LNK605DG器件,输入电压为85–265VAC,输出电压为12V/350mA. 4.2W LED驱动方案初级采用恒压/恒流(CV/CC)控制器,从而省略了次级控制和光耦.输出电压精度±5%,输出电流精度±10%,包括火线电压,负载和温度补偿和元件误差.主要应用手机,无绳电话,PDA,MP3的充电器,适配器,LED驱动器等.本文介绍了LNK605DG的主要特性,应用案例和4.2W LED驱动方案设计电路图, PCB布局(61mm x 24mm)与材料清单.

Energy-Efficient, Accurate CV/CC Switcher 4.2W LED驱动器指标: 85–265 VAC Input; 12 V, 350 mA Output This engineering report describes the design for a universal input, 12 V, 350 mA CV/CC power supply for LED driver applications. This power supply utilizes the LNK605DG device from the Power Integrations LinkSwitch-II family.

This document contains the power supply and transformer specifications, schematics, bill of materials, and typical performance characteristics pertaining to this power supply.

4.2W LED驱动器特性:

Summary and Features

Accurate primary-side constant voltage/constant current (CV/CC) controller eliminates secondary side control and optocoupler

±5% output voltage and ±10% output current accuracy including line, load,temperature and component tolerance

No current-sense resistors for maximized efficiency

Low part-count solution for lower cost
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