Patent ID: 7138787

Claim:
A DC/DC converter for reducing a voltage of a DC power supply, comprising: first and second transformers, each including a primary winding and a secondary winding, the primary winding including first and second windings; a first diode connected to both ends of a series circuit in which the DC power supply, a first switch, and the first winding of the first transformer are connected in series; a second diode connected to both ends of a series circuit in which the DC power supply, a second switch, and the first winding of the second transformer are connected in series; a first series circuit connected to both ends of the first diode, the first series circuit including the second winding of the first transformer and a smoothing capacitor; a second series circuit connected to both ends of the second diode, the second series circuit including the second winding of the second transformer and the smoothing capacitor; a reactor connected across a series circuit in which the secondary winding of the first transformer and the secondary winding of the second transformer are connected in series; and a control circuit which turns on and off the first and second switches with a phase difference of half a cycle.