Multi-winding inductor and power supply module

A multi-winding inductor, comprising:

• a magnetic core comprising a first cover plate, a second cover plate and four magnetic columns, the first cover plate and the second cover plate being arranged oppositely, the four magnetic columns comprising a first magnetic column, a second magnetic column, a third magnetic column and a fourth magnetic column orderly arranged counterclockwise, and two ends of each of the four magnetic columns being respectively connected to the first cover plate and the second cover plate;
• a winding assembly comprising at least a first winding and a second winding, each of the first winding and the second winding comprising a first portion, a second portion and a third portion;
• wherein the first portion and the third portion are connected through the second portion in each of the first winding and the second winding;
• the first portion of the first winding is arranged between the first magnetic column and the second magnetic column,
• the third portion of the first winding is arranged between the third magnetic column and the fourth magnetic column,
• the first portion of the second winding is arranged between the fourth magnetic column and the first magnetic column, and
• the third portion of the second winding is arranged between the second magnetic column and the third magnetic column,
• wherein the first portion of the first winding extends to a first surface of the magnetic core and forms a first pin of the multi-winding inductor on the first surface of the magnetic core;
• the first portion of the second winding extends to the first surface of the magnetic core and forms a third pin of the multi-winding inductor on the first surface of the magnetic core;
• and
• wherein each of the first winding and the second winding is a flat wire with a width and a thickness, the thickness is less than the width, wherein a width direction is parallel to an extension direction of the first magnetic column.