Magnetic integrated device

A magnetic integrated device comprises a bottom plate, a transformer and two inductors, wherein the transformer and the two inductors are arranged on the bottom plate. The transformer comprises a first magnetic core, a second magnetic core, a first framework and a first winding wound on the first framework. The first magnetic core comprises a first core column, and the second magnetic core comprises a second core column. The first framework comprises a first peripheral wall and a first protruding strip. The first peripheral wall is encircled to form a first accommodating space; the first core column and the second core column are accommodated in the first accommodating space; the first protruding strip is located between the first peripheral wall and the first core column and/or located between the first peripheral wall and the second core column; the two inductors are located on the two sides of the transformer respectively; each inductor comprises a third magnetic core, a second framework and a second windi