Analysis of flyback current-fed push-pull dc-dc converter operating in open loop control system

This paper introduces the design and implementation of a flyback-current-fed push-pull dc-dc converter with the advantages of operating in open loop controller, buck-boost mode, high efficiency, less electronic, isolation and so on. The output voltage of the converter is stable in a vide range of output load and can be controlled in an open loop to simplify the circuit design and reduce the expenditure. It operates in a restricted duty cycle range and the experimental results are completed to validate the theoretical conclusions. The proposed dc-dc converter can be employed in DC power distribution systems and other applications to deal with the dc-dc voltage transformation.