Coupled inductor structures utilizing magnetic films

Patent metadata

Field	Value
Publication number	US-11430606-B2
Application number	US-201716335075-A
Country	US
Kind code	B2
Filing date	Aug 24, 2017
Priority date	Sep 22, 2016
Publication date	Aug 30, 2022
Grant date	Aug 30, 2022

Abstract

An inductor is disclosed, including a first wire, a non-conductive material, and a shell. The non-conductive material may cover the first wire, with a portion of each end of the first wire uncovered. The shell may include a top portion and a bottom portion and include at least one magnetized layer and at least one gap between the first portion and the second portion. The shell may also surround a portion of the non-conductive material.

First claim

What is claimed is:

1. An apparatus, comprising:
an inductor, including:
a first wire;
a second wire, parallel to the first wire;
a non-conductive material covering the first wire and the second wire; and
a shell, including an upper portion and a lower portion, surrounding a portion of the non-conductive material, wherein the shell includes at least one magnetized layer and at least one gap between the upper portion and the lower portion, and wherein an end of the upper portion of the shell extends past an end of the lower portion of the shell at an edge of the inductor where the at least one gap is formed.

2. The apparatus of claim 1 , wherein the upper portion of the shell includes a first portion and a second portion with another gap between the first portion and the second portion.

3. The apparatus of claim 1 , wherein the upper portion of the shell includes a plurality of magnetized layers, wherein each layer is separated by a layer of non-conductive material, and wherein magnetic properties of each magnetized layer are different from one another.

4. The apparatus of claim 1 , wherein a cross section of both the first wire and the second wire each corresponds to a rectangular shape.

5. The apparatus of claim 1 , wherein a cross section of both the first wire and the second wire each correspond to a pentagonal shape, and wherein at least one adjacent side of the first wire is oblique to a closest side of the second wire.

6. The apparatus of claim 1 , wherein parts of the upper portion and the lower portion of the shell are coplanar.

7. An apparatus, comprising:
an inductor, including:
a first wire;
a second wire, parallel to the first wire;
a non-conductive material covering the first wire and the second wire; and
a shell, including an upper portion and a lower portion, surrounding a portion of the non-conductive material, wherein the shell includes at least one magnetized layer and at least one gap between the upper portion and the lower portion, and wherein a cross section of the upper portion of the shell includes a channel formed between the first wire and the second wire, and wherein an end of the upper portion of the shell extends past an end of the lower portion of the shell at an edge of the inductor where the at least one gap is formed.

8. The apparatus of claim 7 , wherein a depth and a width of the channel are selected to impart a particular amount of inductance to the first wire and to the second wire.

9. The apparatus of claim 7 , wherein parts of the upper portion and the lower portion of the shell are coplanar.

10. The apparatus of claim 7 , wherein the upper portion of the shell includes a plurality of magnetized layers, wherein each layer is separated by a layer of non-conductive material, and wherein magnetic properties of each magnetized layer are different from one another.

11. The apparatus of claim 10 , wherein a strength of a magnetic field of a first magnetized layer of the plurality of magnetized layers is greater than a strength of a magnetic field of a second magnetized layer of the plurality of magnetized layers that is closer to the first and second wires than the first magnetized layer.

12. The apparatus of claim 7 , wherein a cross section of both the first wire and the second wire each correspond to a pentagonal shape, and wherein at least one adjacent side of the first wire is oblique to a closest side of the second wire.

13. The apparatus of claim 7 , wherein a cross section of both the first wire and the second wire each corresponds to a hexagonal shape.

14. An apparatus, comprising:
a first inductor, including:
a first wire;
a second wire, parallel to the first wire;
a first non-conductive material covering the first wire and the second wire; and
a first upper shell surrounding a portion of the first non-conductive material, wherein the first upper shell includes at least one magnetized layer, and wherein the first upper shell includes a first portion and a second portion with a gap between the first portion and the second portion, the gap located between the first and second wires; and

a second inductor, including:
a third wire;
a fourth wire, parallel to the third wire;
a second non-conductive material covering the third wire and the fourth wire; and
a second upper shell surrounding a portion of the second non-conductive material, wherein the second upper shell includes at least one magnetized layer;

wherein the second inductor is inverted and attached on a bottom of the first inductor to form an inductive device, wherein the first wire and the third wire are parallel to each other.

15. The apparatus of claim 14 , wherein the first wire is conductively coupled to the third wire and the second wire is conductively coupled to the fourth wire.

16. The apparatus of claim 15 , wherein a cross section of the conductively coupled first wire and third wire corresponds to an octagonal shape.

17. The apparatus of claim 14 , wherein a cross section of the first upper shell includes a channel formed between the first wire and the second wire.

18. The apparatus of claim 17 , wherein a cross section of the second upper shell includes a channel formed between the third wire and the fourth wire.

19. The apparatus of claim 14 , wherein the first upper shell and the second upper shell each include a plurality of magnetized layers, wherein each layer is separated by a layer of non-conductive material, and wherein magnetic properties of each magnetized layer are different from one another.

20. The apparatus of claim 14 , further comprising a gap between the first upper shell and the second upper shell.

Assignees

• Apple Inc

Inventors

• Cappabianca David P
• Dibene Ii Joseph T
• Searles Shawn
• Wang Le
• Yang Yizhang
• O'Mathuna Sean Cian
• Kulkarni Santosh
• Mccloskey Paul
• Pavlovic Zoran
• Lawton William
• Maxwell Graeme
• O'Brien Joseph
• Smiddy Hugh Charles

Classifications

• H10D1/20

  Inductors · CPC title

• H01F27/02

  Casings · CPC title

• H01F17/0006 Primary

  Printed inductances (printed coils for dynamo-electric machines H02K3/26; printed circuits H05K) · CPC title

• H01F19/00

  Fixed transformers or mutual inductances of the signal type (H01F36/00 takes precedence) · CPC title

• H01F2017/008

  Electric or magnetic shielding of printed inductances · CPC title