Coupled inductor with adjustable leakage inductance

A coupled inductor with adjustable leakage inductance, comprising:

• a first magnetic element, including:
• a first magnetic plate;
• and
• at least two first magnetic core columns, wherein the at least two first magnetic core columns are disposed on the first magnetic plate and spaced apart along an arrangement direction;
• a second magnetic element, wherein the second magnetic element is coupled to the first magnetic element, and the second magnetic element includes:
• a second magnetic plate;
• and
• at least two second magnetic core columns, wherein a quantity of the second magnetic core columns is the same as a quantity of the first magnetic core columns, the at least two second magnetic core columns are disposed on the second magnetic plate, and spaced apart along the arrangement direction, and are respectively coupled to the at least two first magnetic core columns to form at least two magnetic core column bodies;
• and
• at least two coil assemblies, wherein a quantity of the at least two coil assemblies is the same as a quantity of the at least two magnetic core column bodies, and the at least two coil assemblies are respectively sleeved around the at least two magnetic core column bodies;
• wherein a coupling position between the second magnetic core column and a corresponding one of the first magnetic core column to which the second magnetic core column is coupled has a gap.