NXP SSL5301T36W LED驱动方案

NXP公司的SSL5301T是可调光LED控制器,支持反激,降压和降压-升压拓扑,可选择低THD或低LED电流波纹模式,模拟IEC60929输入或数字控制输入调光,集成了起动JFET,具有多种保护,LED电流精度在+/-4%,主要用在100 V (AC), 120 V (AC)和230 V (AC) LED照明.本文介绍了SSL5301T主要特性和优势,框图,降压-升压电路,反激应用和降压电路,以及36W LED驱动演示板SSL5301DB1233主要特性和指标,电路图,材料清单和PCB设计图与反激变压器电路图.
The SSL5301T is a mains dimmable controller IC, intended to drive dimmable LEDs ingeneral lighting applications.
The main benefits of this IC include:
• High dimmer compatibility
• 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)
• Supports multi-lamp applications
• Various converter topologies supported
The IC drives an external switch for easy power scaling. It has been designed to start updirectly from the High-Voltage (HV) supply by an internal high-voltage current source.
Flyback, buck and buck-boost circuit topologies are supported. Primary side sensingprovides accurate output current control.
The IC can detect all known mains dimmer types and translate the dimmer setting to acontinuous LED current in multiple ways. It can operate in three switching modes at twoswitching frequency ranges. It offers tradeoffs between the output current ripple, themains current Total Harmonic Distortion (THD) and the application size. The ICincorporates all required protection features.
SSL5301T主要特性和优势:

 LED controller IC for driving strings of LEDs or high-voltage LEDs from rectified mains
 High-efficiency switch mode buck, flyback or buck-boost controller driving an externalpower FET
 Two maximum switching frequencies for highest efficiency...