Figure 1 for single level PFC transform Manager
of topology structure figure, it usually by Boost transform
Manager and DC-DC transform Manager constitute,
transformers front-end can as a Boost transform Manager,
and Boost circuit itself has regulation PFC of features, can
obtained higher of power factor, General in 95% above, so
this circuit of power factor higher, through control switch
tube of opened and closed broken, thus achieved on entered
current of plastic and output voltage of regulation