A Novel Isolated Buck-Boost dc-dc Converter with Wide Range of Voltage Regulations

This paper proposed a novel isolated buck-boost dc-dc converter with wide range of voltage regulations. The proposed converter has significant features such as zero voltage switching operation, as well wide input voltage regulation range. This topology can be used in several application including Photovoltaic microconverter, when the voltage varies between 10 to 60 volts, and the output needs to be a constant dc voltage. The Buck, Buck-Boost, as well as Boost capabilities of proposed converter beside their switching states and equations of each switching states are presented. The steady state analysis is used to calculate the voltage gain for each mode. Finally, the simulation using PowerSim software is verifying the theoretical evaluation.