Abstract: An integrated inductor comprises a first winding (C1) and a second winding (C2); a first internal magnetic core in the first winding (C1) and a second internal magnetic core in the second winding (C2); and at least one external magnetic core (M) outside the first winding (C1) and the second winding (C2), used for being connected to end portions of the first and second internal magnetic cores to form a magnetic path, the external magnetic core (M) being formed by multiple sub-magnetic cores joint with each other; the magnetic conductivity of at least one sub-magnetic core of the multiple sub-magnetic cores is greater than the magnetic conductivity of other sub-magnetic cores, and the at least one sub-magnetic core at least covers a part of end faces of the first internal magnetic core and the second internal magnetic core. The integrated inductor can alleviate the phenomenon of flux leakage, and can reduce costs of the magnetic cores.

Abstract: Disclosed is a power inductor. The inductor comprises a magnetic core and multiple lines. The multiple lines have a first terminal and a second terminal, are parallel with each other, and wind the magnetic core to form a winding. The lines at the first terminal depart from the magnetic core at the same position, and the lines at the second terminal depart from the magnetic core at the same position. At least one line at the first terminal forms a first interface end, the other lines at the first terminal, which are not utilized to form the first interface end, form a second interface end, and the lines at the second terminal together form a third interface end. By measuring the current flowing through the first interface end using a current sensor with a small measuring range, the current flowing through the power inductor can be estimated based on ratio.

Abstract: An integrated inductor comprises a first winding (C1) and a second winding (C2); a first internal magnetic core in the first winding (C1) and a second internal magnetic core in the second winding (C2); and at least one external magnetic core (M) outside the first winding (C1) and the second winding (C2), used for being connected to end portions of the first and second internal magnetic cores to form a magnetic path, the external magnetic core (M) being formed by multiple sub-magnetic cores joint with each other; the magnetic conductivity of at least one sub-magnetic core of the multiple sub-magnetic cores is greater than the magnetic conductivity of other sub-magnetic cores, and the at least one sub-magnetic core at least covers a part of end faces of the first internal magnetic core and the second internal magnetic core. The integrated inductor can alleviate the phenomenon of flux leakage, and can reduce costs of the magnetic cores.

Abstract: Disclosed is a power inductor. The inductor comprises a magnetic core and multiple lines. The multiple lines have a first terminal and a second terminal, are parallel with each other, and wind the magnetic core to form a winding. The lines at the first terminal depart from the magnetic core at the same position, and the lines at the second terminal depart from the magnetic core at the same position. At least one line at the first terminal forms a first interface end, the other lines at the first terminal, which are not utilized to form the first interface end, form a second interface end, and the lines at the second terminal together form a third interface end. By measuring the current flowing through the first interface end using a current sensor with a small measuring range, the current flowing through the power inductor can be estimated based on ratio.