I. Introduction
High-brightness light-emitting diode(HB-LED) is widely used to Visible Light Communications, UV LED, transportation, and so on, caused by the notable characteristics, such as high luminous efficiency, good optical performance, long lifetime, rich color and environmental friendly[1], [2]. For high-power HB-LED drivers, PFC is definitely imposed to achieve high power factor(PF) and low input current harmonics in order to meet IEC 61000-3-2 harmonic standard, reducing the pollution of the grid[3]