NXP SSL5511T 36W调光LED驱动电源解决方案

NXP公司的SSL5511T是离线可调光LED控制器,可调光控制模拟或数字输入,可调光范围大,单级拓扑可降低PCB占位面积,集成了起动JFET,支持多种转换器拓扑,可选择低THD或低LED电流波动模式,主要用在通用照明如遥控灯和智能灯.本文介绍了SSL5511T主要优势和特性,框图和典型应用电路,以及可调光36W评估板SSL5511DB1234主要特性与指标,电路图,电路图,材料清单和PCB元件布局图和变压器框图和主要指标.

The SSL5511T is an offline dimmable controller IC, intended to drive dimmable LEDs in general lighting applications, like remote-controlled luminaires and smart lamps.

SSL5511T主要优势:

• Dim level control with either an analog or a digital control input
• Selectable modes for high power factor or low ripple, allowing a wide LED power range
• Large dimming range
• Single stage topology for small PCB footprint
• Ease of design-in
• Integrated start-up JFET
• Low electronic Bill Of Material (BOM)
• Various converter topologies supported

The IC drives an external switch for easy power scaling. It has been designed to start up directly from the High-Voltage (HV) supply by an internal high-voltage current source.Flyback, buck and buck-boost circuit topologies are supported. Primary side sensing provides accurate output current control.
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