4ADRAGNA C.Design Equations of high-power-factor flyback converters based on the L6561[EB/OL].STMicro- electronics application note ANlO59,(2003)[2011-8]http:// www. st. com, 2003.
5CHERN T L,LIU L H,PAN P L,et al.Single-stage flyback converter for constant current output LED driver with power factor correction[C].IEEE ICIEA, 2009 : 2891-2896.
6BROECK H,SAUERLANDER G,WENDT M.Power driver topologies and control schemes for LEDs[C].IEEE APEC, 2007 : 1319-1325.