Interleaved inductor structure

Abstract

This disclosure provides an interleaved inductor structure comprising a first conductor, a second conductor, and a magnetic material. The first conductor has a first sensing portion and two first extensions disposed along a first direction, with the connection points of the two first extensions and the first sensing portion forming a first angle. The second conductor has a second sensing portion and two second extensions disposed along a second direction, with the connection points of the two second extensions and the second sensing portion forming a second angle. The second sensing portion spans the first sensing portion, and the first and second sensing portions do not directly contact each other. The magnetic material at least collectively covers a portion of both the first and second sensing portions. Therefore, this disclosure achieves a significant reduction in the resistance, mutual inductance, and DC loss of the inductor structure without changing the overall size.

Claims

1. An interleaved inductor structure, comprising: at least one first conductor, the at least one first conductor having a first sensing portion disposed along a first direction and two first extension portions extending from opposite ends of the first sensing portion, the two first extension portions forming a first angle with the connection points of the first sensing portion; at least one second conductor, the at least one second conductor having a second sensing portion disposed along a second direction perpendicular to the first direction and two second extension portions extending from opposite ends of the second sensing portion, the two second extension portions forming a second angle with the connection points of the second sensing portion, the second sensing portion straddling the first sensing portion and the first sensing portion and the second sensing portion not in direct contact with each other; and a magnetic body, which at least collectively covers a portion of the first sensing portion and a portion of the second sensing portion, wherein... The first included angle is between 45 degrees and 90 degrees, and the second included angle is between 90 degrees and 135 degrees.

2. The interleaved inductor structure as described in claim 1, wherein, The first sensing part has a first width, which is between 2.5mm and 3.5mm; the second sensing part has a second width, which is between 2.5mm and 3.5mm.

3. The interleaved inductor structure as described in claim 1, wherein, The first sensing element has a first thickness between 0.2 mm and 0.3 mm; the second sensing element has a second thickness between 0.2 mm and 0.3 mm.

4. The interleaved inductor structure as described in claim 1, wherein, The first sensing part has a first length along the first direction, the first length being between 6mm and 7mm; the second sensing part has a second length along the second direction, the second length being between 6mm and 7mm.

5. The interleaved inductor structure as described in claim 1, wherein, The magnetic body has a side surface, and the shortest distance between the side surface and the first extension along the first direction is defined as a first extension interval distance, which is not greater than 0.25 mm; the shortest distance between the side surface and the second extension along the second direction is defined as a second extension interval distance, which is not greater than 0.25 mm.

6. The interleaved inductor structure as described in claim 1, wherein, The first sensing part and the second sensing part are flat plates. The first extension part and the second extension part extend along a third direction perpendicular to the first direction and the second direction. The extension length of the second extension part is between 1.5 times and 1.7 times the extension length of the first extension part.

7. The interleaved inductor structure as described in claim 6, wherein, The maximum distance between the first sensing element and the second sensing element along the third direction is between 1 mm and 2 mm.

8. The interleaved inductor structure as described in claim 6, wherein, The magnetic body has a bottom surface and an upper surface that are disposed opposite to each other along the third direction. The shortest distance between the bottom surface and the first sensing part is defined as a first sensing interval distance, which is between 1 mm and 2 mm. The shortest distance between the upper surface and the second sensing part is defined as a second sensing interval distance, which is between 1 mm and 2 mm.

9. The interleaved inductor structure as described in claim 1, wherein, The first sensing part and the second sensing part are respectively arc-shaped and curved in a relatively distant direction. The first extension part and the second extension part extend along a third direction perpendicular to the first direction and the second direction, and the length of the first extension part is the same as the length of the second extension part.

10. The interleaved inductor structure as described in claim 9, wherein, The maximum distance between the arc-shaped first sensing part and the second sensing part along the third direction is between 1 mm and 2 mm.

11. The interleaved inductor structure as described in claim 9, wherein, The magnetic body has a bottom surface and an upper surface that are disposed opposite to each other along the third direction. The shortest distance between the bottom surface and the first sensing part is defined as a first sensing interval distance, which is between 1 mm and 2 mm. The shortest distance between the upper surface and the second sensing part is defined as a second sensing interval distance, which is between 1 mm and 2 mm.

12. The interleaved inductor structure as described in claim 1, wherein, The first sensing part has two first horizontal sections and a recessed section between the two first horizontal sections; the second sensing part has two second horizontal sections and an upper convex section between the two second horizontal sections, the recessed section and the upper convex section are symmetrically arranged, the first extension and the second extension extend along a third direction perpendicular to the first direction and the second direction, and the length of the first extension is the same as the length of the second extension.

13. The interleaved inductor structure as described in claim 12, wherein, The maximum distance between the concave section and the convex section along the third direction is between 1 mm and 2 mm.

14. The interleaved inductor structure as described in claim 12, wherein, The magnetic body has a bottom surface and an upper surface that are disposed opposite to each other along the third direction. The shortest distance between the bottom surface and the concave section is defined as a first sensing interval distance, which is between 1 mm and 2 mm. The shortest distance between the upper surface and the convex section is defined as a second sensing interval distance, which is between 1 mm and 2 mm.

15. The interleaved inductor structure as described in claim 1, wherein, The number of the at least one second conductor is multiple, and the second conductors are spaced apart from each other and arranged in parallel along the first direction without contacting each other. The second sensing part of the second conductors is disposed over the first sensing part.

16. The interleaved inductor structure as described in claim 1, wherein, The number of the first sensing parts is multiple, and the first sensing parts are extended along the first direction; the number of the at least one second conductor is multiple, and the second conductors are spaced apart from each other and arranged in parallel along the first direction without contacting each other, and the second sensing part of each second conductor is respectively arranged across the first sensing part of the corresponding first conductor.

17. The interleaved inductor structure as described in claim 1, wherein, The number of at least one first conductor is multiple, and these first conductors are spaced apart from each other and arranged in parallel along the second direction without contacting each other; the number of at least one second conductor is multiple, and these second conductors are spaced apart from each other and arranged in parallel along the first direction without contacting each other, and the second sensing portion of these second conductors is disposed over the first sensing portion of these first conductors.

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