[原创] Diodes AL1672高性能LED驱动器解决方案

Diodes公司的AL1672是高性能单级降压转换器,工作在BCM模式,具有良好的EMI和效率,支持多种调光模式.器件集成了600V/4A高压MOSFET和多种保护模式如过压,短路,过流和超温等,主要用在具有调光功能的通用LED照明驱动器,通用恒流源和智能LED照明.本文介绍了AL1672主要特性,框图,降压应用电路图以及100~265VAC高PF降压LED驱动器演示板主要特性和指标,电路图和变压器电路图,材料清单和PCB设计图.

The AL1672 is a high performance single stage Buck convertor, targeting dimmable LED lighting application. It is operating at BCM mode which results in good EMI and efficiency.

The AL1672 can supice will operate in analog dimming mode. When a digital signal is applied on APWM pin, the device works at PWM dimming mode.

The AL1672 features low start-up current and low operation current. It integrates multiple protections including over voltage, short circuit, over current and over temperature protection. It also integrates 600V/4A high voltage MOSFET. The AL1672 is available in SO-8EP package.

AL1672主要特性:

 Valley Switching for Low Switching Loss
 Low Start-Up Current
 High PF and Low THD
 High Efficiency
 Tight LED Current Variation Range
 Tight Output Open Voltage Variation Range
 Integrates 600V/4A MOSFET ..

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