Boost based converters are used in a variety of non-isolated step-up applications, such as Power Factor Correctors (PFC), because of their simplicity. The power density of these converters can be increased in higher switching frequencies, which reduces the size of the magnetic elements. This increases the switching losses, but that can be solved by soft switching techniques. This project proposes a resonant bridgeless PFC converter that provides soft switching for all of the semiconductors. The proposed structure can provide

ZVS for the switches and ZCS for the diodes. In the proposed structure, the input current is inherently sinusoidal with low THD, even with small inductances. Therefore, a high input power factor is achieved without requiring a current control loop in the circuit. This reduces the complexity of the control circuit. An experimental prototype has been constructed to investigate the validity of the claims. Experimental results show near unity power factor, as well as 2% efficiency improvement at full load when compared to a conventional interleaved Boost converter with the same components.