This paper proposes a dual-transformer-based phase-shifted PWM DC-DC converter with wide ZVZCS range. The proposed converter realizes two full bridges in parallel by sharing a half bridge, which reduces the number of switches. The ZVS range of the lagging switches is extended by the leakage inductors of the two transformers, and the ZCS condition of the auxiliary half bridge is realized by phase shift control. Finally, simulation results have verified the wide ZVZCS range.