A new flyback-current-fed push-pull DC-DC converter

This paper introduces a new flyback-current-fed push-pup de-de converter wh ose significant advantages in comparison with the conventional one are a re duction in the number of output diodes and unified output characteristics t o represent both the buck and the boost operation modes in the continuous c onduction mode. Theoretical analysis, design methodology, and experimental results taken from a 600-W 25-kHz laboratory prototype are presented in thi s paper. The circuit introduced is suitable for smirching mode power supply design and power-factor-correction applications as well.