Side-by-side coil inductor

• US 6,587,025 B2
• Filed: 01/31/2001
• Issued: 07/01/2003
• Est. Priority Date: 01/31/2001
• Status: Expired due to Fees

• Current Assignee: Vishay Dale Electronics (Vishay Intertechnology Incorporated)
• Original Assignee: Vishay Dale Electronics (Vishay Intertechnology Incorporated)
• Inventors: Smith, Clark L., Veik, Thomas L.
• Primary Examiner(s): Nguyen, Tuyen T.
• Application Number:
  US09/774,854
• Publication Number:
  US 20020101318A1
• Time in Patent Office: 881 Days
• Field of Search: 336/65, 336/83, 336/180, 336/200, 336/232, 336/233, 336/234, 296/021
• US Class Current: 336/200
• CPC Class Codes: H01F 17/0013 with stacked layers

Abstract

A side-by-side coil inductor includes a first coil comprising a plurality of conductive first coil segments positioned one above another and connected in series. A second coil includes a plurality of conductive second coil segments positioned above one another and connected together in series. The first and second coil are in side-by-side position relative to one another and are connected together in series. Each of the first and second coil are approximately circular or square in configuration and the total configuration of the two coils is rectangular.

Claims

1. A side by side coil inductor comprising:

a first coil comprising a plurality of conductive first coil segments positioned one above the other, said first coil segments being connected together in series;

a second coil comprising a plurality of conductive second coil segments positioned one above the other, said second coil segments being connected together in series;

said first and second coil being in side by side position relative to one another and being connected together in series;

a top ferrite layer;

a bottom ferrite layer;

at least one middle ferrite layer between the top ferrite layer and the bottom ferrite layer;

each of the at least one middle ferrite layer having a first via hole for connecting first coil segments in series and a second via hole for connecting second coil segments in series; and

each of the at least one middle ferrite layers being separated from adjacent ferrite layers only by first coil segments and second coil segments.

2. A side by side coil inductor according to claim 1 wherein said first and second coils in combination have a combined length dimension and a combined width dimension, said combined length dimension being greater than said combined width dimension.

3. A side by side coil inductor according to claim 2 wherein a plurality of ferrite layers and said first and second coils form a body member, said body member having a body length dimension and a body width dimension, said body length dimension being greater than said body width dimension.

4. A side by side coil inductor according to claim 1 wherein said first coil and said second coil each have a coil width dimension and a coil length dimension which are equal.

5. The side-by-side coil inductor of claim 1 wherein the first and second coil segments being formed by a thick film process.

6. The side-by-side coil inductor of claim 1 wherein each of the coil segments progresses more than 360 degrees.

7. The side-by-side inductor of claim 1 wherein the first and second coil segments being formed by low temperature cofired tape.

8. A side by side coil inductor comprising:

a first helically shaped conductor coil having a plurality of first coil layers stacked above one another;

a second helically shaped conductor coil having a plurality of second coil layers stacked above one another;

each of said first and second conductor coils having horizontal length and width which are equal;

each of said first and second conductor coils being in side by side relation and being connected in series with one another;

a plurality of ferrite layers alternating between adjacent pairs of said first coil layers and between adjacent pairs of said second coil layers to create an inductor body having an elongated shape with a body length greater than a body width;

each of said first coil layers connected in series through at least one first coil layer via;

each of said second coil layers connected in series through at least one second coil layer via; and

each of the plurality of ferrite layers being separated from at least one adjacent ferrite layer only by first coil segments and second coil segments.

9. The side-by-side coil inductor of claim 8 wherein the first and second coil segments being formed by a thick film process.

10. The side-by-side coil inductor of claim 8 wherein each of the coil segments progresses more than 360 degrees.

11. The side-by-side coil inductor of claim 8 wherein the first and second coil segments being formed by low temperature cofired tape.