Simulation of Multi output Fly back Converter with Integrated Auxiliary Buck Converter with reduced components

The fly back converter has been widely used for multi outputs due to the simple structure and low cost in low-power applications. This paper presents a new multi output converter. It consists of a half-bridge inverter with boost converter in primary side and a fly back rectifier that is integrated with an auxiliary buck converter in secondary side. The boost converter is used to generate high voltage dc from Low voltage PV cells. The primary switches control the main output voltage and the secondary synchronous switches control the auxiliary output voltage. The main advantages of the proposed converter are that the transformer size can be reduced due to the less magnetizing offset current, all the power switches including synchronous ones can achieve the zero-voltage switching (ZVS) and it has no output cross regulation problems. The circuit is simulated using MATLAB. The performance is verified with simulation results. KeywordBoost converter, fly back converter, inverter, zero voltage switching and buck converter