Magnetic element, method for manufacturing magnetic element, and power supply module

A magnetic element, comprising:

• a first magnetic column;
• a second magnetic column;
• a first winding wound around the first magnetic column, comprising:
• a first horizontal winding and a second horizontal winding located above and below the first magnetic column, respectively, and
• a first vertical winding and a second vertical winding located at two sides of the first magnetic column, respectively;
• and
• a second winding wound around the second magnetic column, comprising:
• a third horizontal winding and a fourth horizontal winding located above and below the second magnetic column, respectively, and
• a third vertical winding and a fourth vertical winding located at two sides of the second magnetic column, respectively;
• wherein the first vertical winding and the third vertical winding are disposed on or in a first circuit board and a second circuit board, respectively, wherein the second vertical winding and the fourth vertical winding are disposed on or in a third circuit board, wherein the first circuit board, the first magnetic column, the third circuit board, the second magnetic column, and the second circuit board are sequentially bonded to form a pre-package, and
• wherein the first circuit board, the second circuit board, and the third circuit board are connected to the first horizontal winding, the second horizontal winding, the third horizontal winding, and the fourth horizontal winding through a plurality of first conductive vias, such that the first vertical winding, the first horizontal winding, the second vertical winding, and the second horizontal winding are sequentially connected through the plurality of first conductive vias, and that the fourth vertical winding, the third horizontal winding, the third vertical winding, and the fourth horizontal winding are sequentially connected through the plurality of first conductive vias.