Powerint LNK605DG 3.7W LED驱动设计方

Powerint 公司的DER206 3.7W LED驱动设计方案是采用LNK605DG器件,输入电压为90-265VAC,输出电压为10.5V/350mA. DER206设计初级采用恒压/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DER206设计电路图与材料清单.

3.7 W LED Driver Using LNK605DG:90–265 VAC Input; 10.5 V, 350 mA Output DER206设计优势:

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

Over-temperature protection–tight tolerance (±5%) with hysteretic recovery for safe PCB temperatures under all conditions

Auto-restart output short circuit and open-loop protection

EcoSmart – Easily meets all existing and proposed international energy efficiency standards–China (CECP) / CEC / EPA / European Commission

ON/OFF control provides constant efficiency to very light loads

No-load consumption <200 mW at 265 VAC
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