The invention discloses a thin film inductor which comprises a thin film magnetic core The thin film magnetic core comprises multiple magnetic columns, a first end and a second end The multiple magnetic columns are arranged at intervals and are in a rod shape One end of each magnetic column makes contact with the first end, and the other end of each magnetic column makes contact with the second end The multiple magnetic columns comprise two or more winding magnetic columns and one non-winding magnetic column which is located on one side of the winding magnetic columns; or the multiple magnetic columns comprise two or more winding magnetic columns and two non-winding magnetic columns, wherein the winding magnetic columns are located between the two non-winding magnetic columns The thin film magnetic core comprises at least one layer of magnetic thin film The area, located at the first end and the second end and located between the adjacent winding magnetic columns, in each layer of magnetic thin film is provided with at least one first gap The length direction of each first gap is parallel to the difficult magnetization direction of the corresponding magnetic thin film The magnetic thin films are stacked and overlaid, and the sum of the widths of all the first gaps in each layer of magnetic thin film is the same

Thin film inductor and power switching circuit

A particular device includes a coil and a discontinuous magnetic core. The discontinuous magnetic core includes a first elongated portion, a second elongated portion, and at least two curved portions, where the portions are coplanar and physically separated from each other. The discontinuous magnetic core is arranged to form a discontinuous loop. The discontinuous magnetic core is deposited as a first layer above a dielectric substrate. A first portion of the coil extends above a first surface of the magnetic core. A second portion of the coil extends below a second surface of the magnetic core. The second portion of the coil is electrically coupled to the first portion of the coil. The second surface of the magnetic core is opposite the first surface of the magnetic core.

Integration of a coil and a discontinuous magnetic core

A thin film inductor is disclosed. The thin film inductor includes a thin film magnetic core (110). The thin film magnetic core includes a plurality of magnetic cylinders, a first end portion (120), and a second end portion (130). The plurality of magnetic cylinders are all rod-shaped and are separated from each other. One end of each magnetic cylinder is in contact with the first end portion (120), and the other end thereof is in contact with the second end portion (130). The plurality of magnetic cylinders include at least two winding magnetic cylinders (140) and one non-winding magnetic cylinder (150), and the non-winding magnetic cylinder (150) is located on one side of the at least two winding magnetic cylinders (140). Alternatively, the plurality of magnetic cylinders include at least two winding magnetic cylinders (140) and two non-winding magnetic cylinders (150), and the at least two winding magnetic cylinders (140) are located between the two non-winding magnetic cylinders (150). The thin film magnetic core (110) includes at least one magnetic thin film (101). In each magnetic thin film (101), at least one type-1 gap (170) is provided in an area located at the first end portion (120) and the second end portion (130) and located between two adjacent winding magnetic cylinders (140). A length direction of the type-1 gap (170) is parallel to a direction of hard magnetization of the magnetic thin film (101). The magnetic thin films (101) are laminated and overlap each other. A sum of widths of all type-1 gaps (170) in each magnetic thin film (101) is the same.

Thin Film Inductor and Power Conversion Circuit

The invention discloses a method for preparing an integrated inductor multi-component composite magnetic core layer, relates to the fields of microelectronics and a printed circuit board, and can overcome the shortcomings of difficulty in obtaining a multi-component alloy magnetic core material by a chemical co-deposition method, and implementation difficulty in adjusting deposition potential of all metal ions to a similar level by the chemical co-deposition method in the prior art Based on self-catalysis performance of Ni or Co, Ni or Co and magnetic core particles are co-deposited to a target deposition region of an inductor to form the multi-component composite magnetic core layer with a dual-phase structure; by virtue of the prepared magnetic core layer, the inductance value of the inductor can be improved; and meanwhile, compared with a sputtering method, the preparation method disclosed by the invention has the advantages of simple process, high film-forming speed, and low energy consumption

Method for preparing integrated inductor multi-component composite magnetic core layer

The invention provides a deposition method of a magnetic thin film lamination layer, the magnetic thin film lamination layer and a micro inductor device. The deposition method comprises the followingsteps of S1, depositing an adhesive layer on a workpiece to be processed; and S2, depositing a magnetic/isolation unit, wherein the magnetic/isolation unit comprises at least one pair of magnetic filmlayer and isolation layer which are alternatively arranged. With the deposition method of the magnetic thin film lamination layer, provided by the invention, the total thickness of the magnetic thinfilm lamination layer can be increased, so that the application frequency range of the inductor device fabricated by the method can be expanded.

Deposition method of magnetic thin film lamination layer, magnetic thin film lamination layer and micro inductor device

Exemplary embodiments provide a nanomagnetic structure and method of making the same, comprising a device substrate, a plurality of nanomagnetic composite layers disposed on the device substrate, wherein an adhesive layer is interposed between each of the plurality of nanomagnetic composite layers. Metal windings are integrated within the plurality of nanomagnetic composite layers to form an inductor core, wherein the nanomagnetic structure has a thickness ranging from about 5 to about 100 microns.

Joseph Ellul

Papers

Magnetic devices utilizing nanocomposite films layered with adhesives