Abstract: A novel current double rectifier （CDR） full bridge converter was proposed.It retains the advantages of no duty cycle loss and no secondary voltage spike,and realizes zero-voltage-switching （ZVS） for all the switches throughout the entire load range with the use of auxiliary network in the primary side.The current ripple of output filter can also be reduced.The operation principle of the converter under continuous current mode （CCM） and discontinuous current mode （DCM） were discussed in detail.The key parameters （coupled inductor,auxiliary capacitor,filter inductor） design method was given.A prototype rated 1.4 kW （28 V/50 A）,100 kHz based on the presented topology was built.The performance of the presented topology was verified by the experimental results.