An integrated magnetic component, comprising an integrated magnetic core and a PCB winding, wherein there are even-number layers of PCB windings; every two layers of PCB windings are one group, and each group of PCB windings comprises a first layer of PCB winding and a second layer of PCB winding; the integrated magnetic core comprises M magnetic pillars (12, 22, 32, 42) that are symmetrically distributed, M is 2 or 4, and every two of the M magnetic pillars form one group; and for each group of PCB windings, a current path on the first layer of PCB winding is connected to M paths on the first layer of PCB winding so that a sum of M currents on the M paths on the first layer of PCB winding is equal to a current on the current path on the first layer of PCB winding, and the current path on the first layer of PCB winding is connected to M paths on the second layer of PCB winding so that a sum of M currents on the M paths on the second layer of PCB winding is equal to the current on the current path on the first layer of PCB winding; on each layer of PCB winding, the M paths run around the M magnetic pillars (12, 22, 32, 42) so that an i-th path of the M paths runs around an i-th magnetic pillar of the M magnetic pillars for i = 1,..., M and forms a fractional turn; for each group of PCB windings and for each group of magnetic pillars, on the first layer of PCB winding, after running around the two magnetic pillars of the respective group of magnetic pillars, the two respective paths of the M paths on the first layer of PCB winding are combined into one current, and the current obtained through combination flows around a first magnetic pillar (12, 32) in the respective group of magnetic pillars by N turns on the first layer of PCB winding, enters the second layer of PCB winding through a via hole, flows around the first magnetic pillar by N turns on the second layer of PCB winding, and is then divided into two respective paths of the M paths on the second layer of PCB winding; after running around the two magnetic pillars of the respective group of magnetic pillars, the two respective paths of the M paths on the second layer of PCB winding are combined into one current, the current obtained through combination flows around a second magnetic pillar (22, 42) of the respective group of magnetic pillars by N turns on the second layer of PCB winding, flows into the first layer of PCB winding through a via hole, and flows out after flowing around the second magnetic pillar by N turns on the first layer of PCB winding, and finally, for the case of M = 4, all current paths are combined, wherein N is a non-negative integer. the integrated magnetic core comprises M magnetic pillars (12, 22, 32, 42) that are symmetrically distributed, M is 2 or 4, and every two of the M magnetic pillars form one group; and for each group of PCB windings, a current path on the first layer of PCB winding is connected to M paths on the first layer of PCB winding so that a sum of M currents on the M paths on the first layer of PCB winding is equal to a current on the current path on the first layer of PCB winding, and the current path on the first layer of PCB winding is connected to M paths on the second layer of PCB winding so that a sum of M currents on the M paths on the second layer of PCB winding is equal to the current on the current path on the first layer of PCB winding; on each layer of PCB winding, the M paths run around the M magnetic pillars (12, 22, 32, 42) so that an i-th path of the M paths runs around an i-th magnetic pillar of the M magnetic pillars for i = 1,..., M and forms a fractional turn; for each group of PCB windings and for each group of magnetic pillars, on the first layer of PCB winding, after running around the two magnetic pillars of the respective group of magnetic pillars, the two respective paths of the M paths on the first layer of PCB winding are combined into one current, and the current obtained through combination flows around a first magnetic pillar (12, 32) in the respective group of magnetic pillars by N turns on the first layer of PCB winding, enters the second layer of PCB winding through a via hole, flows around the first magnetic pillar by N turns on the second layer of PCB winding, and is then divided into two respective paths of the M paths on the second layer of PCB winding; after running around the two magnetic pillars of the respective group of magnetic pillars, the two respective paths of the M paths on the second layer of PCB winding are combined into one current, the current obtained through combination flows around a second magnetic pillar (22, 42) of the respective group of magnetic pillars by N turns on the second layer of PCB winding, flows into the first layer of PCB winding through a via hole, and flows out after flowing around the second magnetic pillar by N turns on the first layer of PCB winding, and finally, for the case of M = 4, all current paths are combined, wherein N is a non-negative integer.