Patent ID: 8891254

Claim:
A power converter having an output terminal connected to an inductor, comprising: a transformer in which a first voltage serving as a reference voltage and a second voltage different from the first voltage are alternately induced; a full-bridge circuit on a power supply route connecting the transformer to the inductor, the full-bridge circuit including a first arm and a second arm connected in parallel, the first arm and the second arm each including a plurality of field-effect transistors connected in series; and a control circuit configured to perform control to turn on and off each of the field-effect transistors included in the full-bridge circuit, wherein within a time period for which the first voltage is induced in the transformer, the control circuit performs control so that each of the field-effect transistors included in at least one of the first arm and the second arm is on, and when P on denotes a duration of an on time period for which each of the field-effect transistors included in the at least one of the first arm and the second arm is on, P X denotes a duration of the time period for which the first voltage is induced in the transformer, P S denotes a duration of a time period from the end of the on time period to a time point when the first voltage induced in the transformer transitions to the second voltage, α denotes a duration of a rise time of a body diode of each of the field-effect transistors, and β denotes a duration of a fall time of the body diode, P on , P X , P S , α, and β satisfy the relations P on >(β/α)P S , 0≦P S <α, and P on +P S ≦P X .