On Semi NCL30051输入90－265 Vac 60W离线LED驱动方案
On Semi 公司的NCL30051是用于离线LED照明解决方案的PFC和半桥谐振组合控制器,集成了实现高效率和小型LED驱动器/电源所需的所有功能,包括临界导通模式(CrM) PFC升压控制器和内置的600V驱动器的半桥谐振控制器,主要用于高效LED驱动器和电源,电控制齿轮以及照明镇流器.本文介绍了NCL30051主要特性,方框图,典型应用电路以及60W评估板NCL30051LEDGEVB指标,电路图和材料清单(BOM).
NCL30051LEDGEVB:60W 90-265 Vac 35-50 V Constant Current up to 1.5A Isolated LED Driver
The NCL30051 is a combination of PFC and half−bridge resonant controllers optimized for off−line LED lighting solutions. This device integrates all the features needed to implement a highly efficient and small form factor LED Driver/Power Supply. It contains a critical conduction mode (CrM) power factor correction (PFC) boost controller and a half−bridge resonant controller with a built−in 600 V driver. The half−bridge stage operates at a fixed frequency, greatly simplifying the control implementations. The output (current or voltage) regulation is achieved by adjusting the PFC stage output voltage − based on a control signal generated external to the NCL30051.
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