ABSTRACT
For most of the switching power supply, two specification parameters are the key factors in deciding their market. One of them is efficiency and the other is the quality of power that it draws from the utility [1]–[4]. The efficiency improvement for power electronic applications at low power levels is achieved by replacing the diodes with MOSFETs. This is known as synchronous rectification. On the other hand, the quality can be improved by improving the power factor of the mains. By improving the power factor, the THD is improved and thus the quality is improved indirectly. In this chapter, new power electronic topologies are introduced that take care of both efficiency and quality.
