Power converter

A power converter, comprising:

• a transformer, comprising a primary side winding, a first secondary side winding and a second secondary side winding coupled to each other, wherein a first terminal of the first secondary side winding is electrically connected to a second terminal of the second secondary side winding and a positive output terminal, and the number of turns of the first secondary side winding is the same as that of the second secondary side winding,
• a first current detection circuit, electrically connected in parallel to the first secondary side winding, and comprising a first auxiliary winding, a first switch and a first impedance device electrically connected in series, wherein the first auxiliary winding and the first secondary side winding are coupled to each other, and the number of turns of the first auxiliary winding is the same as that of the first secondary side winding;
• and
• a rectifier circuit, comprising a second switch and a third switch, wherein a first terminal of the second switch is electrically connected to a second terminal of the first secondary side winding, and a second terminal of the second switch is electrically connected to a negative output terminal, a first terminal of the third switch is electrically connected to a first terminal of the second secondary side winding, and a second terminal of the third switch is electrically connected to the negative output terminal,
• wherein the second switch and the third switch are turned on alternately, and the first switch and the second switch are turned on and off synchronously.