利用NCP1200的高功率因数恒流型大功率LED驱动电路设计

Design of High-Power LED Drive Circuit with High-Power-Factor and Constant-Current Based on the NCP1200

提出了一种利用NCP1200的高功率因数恒流型大功率LED驱动电路。该电路在交流220V电源上工作时采用APFC方式整流,从而大大减少一次整流时产生的脉冲电流,提高功率因数,同时实现恒流驱动目的。设计的电路简单,工作稳定可靠,具有很高的性能价格比。

This article presented a high-power LED lighting drive circuit , which is high-power-factor and constant-current by using the NCP1200.The circuit adopts APFC to rectify in AC 220 V power supply, which greatly reduces the pulse current at one rectification and improves the power-factor in order to achieve constant-current driving .It is stable and reliable , with simple circuit and high cost performance ratio .