DC-DC converters, widely used in industry, are much more needed to supply higher power with higher efficiency in various applications. However, the conventional DC-DC converters cannot achieve higher efficiency owing to the switching and conduction losses. Thus, this paper aims at reducing these losses of conventional DC-DC converters by using zero-voltage-switching (ZVS), zero-current-switching (ZCS), and Synchronous Rectification (SR) with reduced reverse recovery time of junction diodes. A novel dual resonant tank for DC-DC converters with SR is proposed on the basis of existing topologies. To verify the proposed circuit, a prototype converter is implemented in this paper. The simulated and experimental results obtained have demonstrated that the proposed dual resonant tank can be practically implemented in conventional DC-DC converters to provide better performance as compared with existing topologies.