Power supply module

A power supply module, comprising a transformer comprising a magnetic core and a winding, and a rectifier circuit electrically connected to the winding, wherein

• the magnetic core further comprises:
• a first cover plate;
• a second cover plate opposite to the first cover plate;
• a first magnetic column;
• and
• a second magnetic column having a magnetic flux in opposite direction to that of the first magnetic column, the first magnetic column and the second magnetic column connected between the first cover plate and the second cover plate;
• the winding further comprises:
• a first winding wound onto the first magnetic column;
• a third winding wound onto the second magnetic column;
• a second winding wound onto the first magnetic column;
• and
• a fourth winding wound onto the second magnetic column, wherein the first winding and the third winding have a first shared winding portion, the second winding and the fourth winding have a second shared winding portion, at least a part of the first shared winding portion is located between the first magnetic column and the second magnetic column, and at least a part of the second shared winding portion is located between the first magnetic column and the second magnetic column, and wherein a current flowing through the first winding and a current flowing through the third winding are overlapped in the first shared winding portion, and a current flowing through the second winding and a current flowing through the fourth winding are overlapped in the second shared winding portion;
• and
• the rectifier circuit further comprises:
• a plurality of rectifier components comprising a first rectifier component and a second rectifier component electrically connected to form a half-bridge full-wave rectifier circuit.