AC/DC power converters including current transformers for bidirectional current sensing

An AC/DC power converter, comprising:

• a pair of input terminals for receiving an alternating current (AC) voltage input from an input power source;
• a pair of output terminals for supplying a direct current (DC) voltage output to a load;
• a power factor correction circuit coupled between the pair of input terminals and the pair of output terminals, the power factor correction circuit including at least one power switch defining a switched current path;
• a current transformer including a primary winding and a secondary winding, the primary winding coupled in series with the switched current path, the secondary winding including a first end and a second end opposite the first end;
• a bridge rectifier coupled with the first and second ends of the secondary winding;
• a first sense switch coupled with the bridge rectifier;
• a second sense switch coupled with the bridge rectifier;
• and
• a control circuit configured to turn on the first sense switch and turn off the second sense switch during a positive polarity of the AC voltage input, and to turn off the first sense switch and turn on the second sense switch during a negative polarity of the AC voltage input.