A wide range bidirectional dc–dc converter with quadratic boost voltage gain is proposed in this article for hybrid energy source driven electric vehicles. The proposed converter is restructured such that in the forward path of buck and boost mode there exists only one semiconducting device. The benefits of stated converter are wide-voltage-range and absolute common ground. The steady state operation, voltage stress of semiconducting elements, comparison with other similar quadratic boost converters and closed loop control are presented in this article. A 200 W, 25 kHz, low voltage ( V _LV ) input of 40–120 V prototype is developed to validate the performance indices.