The objective of this project work is to develop a Buck-Boost Converter to achieve high power factor with high operating frequency with simulation study. The recent technologies which involve high frequency applications such as wireless power transfer (WPT) use a high operating frequency in the range from a few hundred of kHz to over some of MHz. Such buck, boost or buck-boost configuration adopt improved power quality in terms of reduced total harmonic distortion (THD) of input current, power-factor correction (PFC) at AC mains and precisely regulated and isolated DC output voltage feeding to loads from few Watts to several kW. Further this paper presents a comprehensive study on power factor corrected single-phase AC-DC converter configuration, control strategy and design considerations, power quality considerations, latest trends, potential applications and future developments. Simulation results as well as comparative performance are presented and discussed for such proposed topology.