一种功率因数校正电路在LED驱动器上的应用研究

Application research of a power factor correction circuit based on the LED drivers

论述了功率因数校正的原理,讨论了功率因数校正的一些方法,提出了一种应用于LED驱动器的新型功率因数校正电路。试制了一个用于100 W LED驱动电路的功率因数校正样机,实验表明,该样机的功率因数大于0.99,电流总谐波小于6%。

A new kind of power factor correction circuit in application of LED drivers was proposed.The principle and methods of power factor correction were discussed.A power factor correction prototype was given based on the new product FAN7930 of fairchild semiconductor corporation which was used for the 100W LED driving circuit.Experiments showed that this prototype power factor was greater than 0.99 and total harmonic distortion was less than 6%.