Inductive component and method for producing an inductive component

Patent metadata

Field	Value
Publication number	US-10692639-B2
Application number	US-201515125077-A
Country	US
Kind code	B2
Filing date	Feb 6, 2015
Priority date	Mar 12, 2014
Publication date	Jun 23, 2020
Grant date	Jun 23, 2020

Abstract

An inductive component and a method for producing an inductive component are disclosed. In an embodiment, the inductive component includes a first core part having wound first and second wires and a second core part arranged on the first core part. In various embodiments the inductive component has a low mode conversion, a low inductance in differential-mode operation, a high inductance for common-mode signals, a constant characteristic impedance, a low capacitive coupling of the wires, and/or a low leakage inductance.

First claim

The invention claimed is:

1. An inductive component comprising:
a first wire;
a second wire;
a core having a first core part and a second core part, wherein the first core part has a first flange section, a second flange section and a wire winding section for winding the first and second wires; and
a plurality of contact mounts for contacting a respective end of the first and second wires,
wherein each of the first and second flange sections has a first inner side wall arranged between a respective one of first and second surfaces of the first and second flange sections and a respective third surface of the first and second flange sections, each first inner side wall facing a wire winding section,
wherein each of the first and second flange sections has a first outer side wall arranged between a respective one of the first and second surfaces of the first and second flange sections and the respective third surface of the first and second flange sections, a respective first outer side wall arranged opposite to a respective first inner side wall of the first and second flange sections,
wherein each of the first and second flange sections has a second inner side wall arranged between the respective one of the first and second surfaces of the first and second flange sections and a bottom surface of a respective single groove of the first and second flange sections, and
wherein a respective second inner side wall of the first and second flange sections is arranged obliquely, at an angle of between 120° and 160°, relative to the respective first inner side wall of the first and second flange sections.

2. The inductive component according to claim 1 ,
wherein the respective second inner side wall of the first and second flange sections has a first section and a second section,
wherein the respective first section of the second inner side wall of the first and second flange sections is arranged at a right angle relative to the respective first outer side wall of the first and second flange sections, and
wherein the respective second section of the second inner side wall of the first and second flange sections is arranged obliquely, at an angle of between 120° and 160°, relative to the respective first section of the second inner side wall and relative to a respective first inner side surface of the first and second flange sections.

3. The inductive component according to claim 1 ,
wherein the first and second flange sections project beyond the wire winding section transversely with respect to a longitudinal direction of the wire winding section,
wherein the first and second flange sections are arranged symmetrically with respect to the longitudinal direction of the wire winding section,
wherein the first flange section has a second outer side wall arranged between one of the first and second surfaces of the first flange section and the third surface of the first flange section, the second outer side wall of the first flange section being arranged opposite to the second inner side wall of the first flange section, and
wherein the second flange section has a second outer side wall arranged between one of the first and second surfaces of the second flange section and the third surface of the second flange section, the second outer side wall being arranged opposite to the second inner side wall of the second flange section.

4. The inductive component according to claim 3 , wherein the second core part comprises a plate comprising:
a first surface;
a first lateral region;
a second lateral region;
a central region arranged between the first and second lateral regions;
a second surface situated opposite to the first surface; and
at least one side wall arranged between the first and second surfaces.

5. The inductive component according to claim 4 ,
wherein an adhesive layer is arranged between the third surface of the first flange section and the first lateral region of the first surface of the second core part,
wherein the adhesive layer provides a gap of between 1 μm and 25 μm between the third surface of the first flange section and the first lateral region of the first surface of the second core part,
wherein a further adhesive layer is arranged between the third surface of the second flange section and the second lateral region of the first surface of the second core part, and
wherein the further adhesive layer provides a gap of between 1 μm and 25 μm between the third surface of the second flange section and the second lateral region of the first surface of the second core part.

6. The inductive component according to claim 4 ,
wherein an adhesive layer is arranged above a gap between the at least one side wall of the plate and at least one of the first and second outer side walls of the first flange section,
wherein a further adhesive layer is arranged above a gap between the at least one side wall of the plate and at least one of the first and second outer side walls of the second flange section, and
wherein a gap width of each gap is less than 10 μm.

7. The inductive component according to claim 4 ,
wherein the third surface of the first flange section and/or the first lateral region of the first surface of the second core part are/is defined as ground, and
wherein the third surface of the second flange section and/or the second lateral region of the first surface of the second core part are/is defined as ground.

Assignees

• Epcos Ag

Inventors

• Jerez Felipe
• Bühlmaier Stephan
• Drespling Anneliese
• Schliewe Jörn
• Schefler Stefan
• Nassal Joachim

Classifications

• H01F17/045 Primary

  with core of cylindric geometry and coil wound along its longitudinal axis, i.e. rod or drum core · CPC title

• H01F41/069

  Winding two or more wires, e.g. bifilar winding · CPC title

• H01F3/14

  Constrictions; Gaps, e.g. air-gaps (in magnetic shunt paths H01F3/12) · CPC title

• H01F27/263

  Fastening parts of the core together · CPC title

• H01F41/07

  Twisting · CPC title