IP Library › Granted Patent US 12,327,670
Granted Patent B2
US 12,327,670 · App. 18/459,127 · Granted Jun 10, 2025

Apparatus for an inductor disposed in a band for method of heat dispersion

Inventors: Dhammika L. Perera (San Jose, CA); John Weld (Ledgewood, NJ); Matthew Wilkowski (Rockwell, TX)
Assignee: Modular Power Technology, Inc.
H01F27/22H01F1/147H01F1/344H01F27/24H01F27/2876H02M1/0003H05K7/12H05K7/209H10D89/60H05K2201/1003
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Quick Facts
Patent No.
US 12,327,670
App. No.
18/459,127
Granted
Jun 10, 2025
Kind
B2
Abstract

Embodiments of the present disclosure include an apparatus having a band including a high thermally conductive material is disposed at least partially around an inductor.

Claims (31)

1. A method comprising:

providing an inductor comprising a top magnetic core and a bottom magnetic core, wherein the top magnetic core includes a first opening formed in a bottom side of the top magnetic core and the bottom magnetic core includes a second opening formed in an edge side of the bottom magnetic core, and wherein the first opening and the second opening is for coupling the top magnetic core and the bottom magnetic core to one or more internal conductors; and

disposing a thermally conductive band on a surface of the inductor, the thermally conductive band configured to be in thermal convective contact with one or more electrical components of a substrate based on the thermally conductive band being elevated over the one or more electrical components by at least a thickness of a thermal interface.

2. The method of claim 1 , further comprising:

mounting the inductor to the substrate via the one or more internal conductors, wherein the thermally conductive band is in the thermal convective contact with the one or more electrical components.

3. The method of claim 2 , further comprising:

dissipating heat generated by the one or more electrical components and the inductor via the thermally conductive band.

4. The method of claim 3 , further comprising:

coupling a heat sink to a top surface of the thermally conductive band to dissipate the heat.

5. The method of claim 4 , wherein the thermally conductive band conducts heat loss from the one or more electrical components to the heat sink disposed on the top surface of the thermally conductive band.

6. The method of claim 1 , wherein the one or more electrical components of the substrate comprises one or more integrated circuits.

7. The method of claim 1 , wherein the inductor comprises the one or more internal conductors, and wherein the one or more internal conductors extend beyond a bottom surface of the inductor to provide space for the thermally conductive band to fit between the bottom surface of the inductor and the one or more electrical components of the substrate.

8. The method of claim 1 , wherein the thermally conductive band comprises a formable metal comprising copper, silver, gold, aluminum, steel, stainless steel, tungsten, or zinc.

9. The method of claim 1 , wherein the thermally conductive band comprises a non-metal including aluminum nitride, or graphite.

10. An apparatus comprising:

an inductor comprising a top magnetic core and a bottom magnetic core, wherein the top magnetic core includes a first opening formed in a bottom side of the top magnetic core and the bottom magnetic core includes a second opening formed in an edge side of the bottom magnetic core, and wherein the first opening and the second opening is for coupling the top magnetic core and the bottom magnetic core to one or more internal conductors; and

a thermally conductive band disposed on a surface of the inductor, the thermally conductive band configured to be in thermal convective contact with one or more electrical components of a substrate based on the thermally conductive band being elevated over the one or more electrical components by at least a thickness of a thermal interface.

11. The apparatus of claim 10 , wherein the thermally conductive band has a thermal conductive value greater than the thermal conductivity of the inductor.

12. The apparatus of claim 10 , further comprising a heat sink disposed on a top surface of the thermally conductive band.

13. The apparatus of claim 12 , wherein the thermally conductive band conducts heat loss from the one or more electrical components to the heat sink disposed on the top surface of the thermally conductive band.

14. The apparatus of claim 10 , wherein the one or more electrical components of the substrate comprises one or more integrated circuits.

15. The apparatus of claim 10 , wherein the inductor comprises one or more internal conductors, and wherein the one or more internal conductors extend beyond a bottom surface of the inductor to provide space for the thermally conductive band to fit between the bottom surface of the inductor and the one or more electrical components of the substrate.

16. A method comprising:

providing an inductor, comprising a magnetic material including a top magnetic core and a bottom magnetic core, wherein the top magnetic core includes a first opening formed in a bottom side of the top magnetic core and the bottom magnetic core includes a second opening formed in an edge side of the bottom magnetic core, and wherein the first opening and the second opening is for coupling the top magnetic core and the bottom magnetic core to one or more internal conductors, the inductor, having a thermally conductive band disposed on a surface of the inductor and being elevated over one or more electrical components of a substrate by at least a thickness of a thermal interface; and

confining propagation of a magnetic field of the magnetic material of the inductor internally within the magnetic material.

17. The method of claim 16 , wherein the magnetic field does not propagate outside the magnetic material or into the thermally conductive band.

18. The method of claim 16 , wherein the magnetic field does not induce losses in the thermally conductive band.

19. An apparatus, comprising:

an inductor comprising a magnetic material including a top magnetic core and a bottom magnetic core, wherein the top magnetic core includes a first opening formed in a bottom side of the top magnetic core and the bottom magnetic core includes a second opening formed in an edge side of the bottom magnetic core, and wherein the first opening and the second opening is for coupling the top magnetic core and the bottom magnetic core to one or more non-insulated internal conductors in direct contact with the magnetic material; and

a thermally conductive band disposed on a surface of the inductor and being elevated over one or more electrical components of a substrate by at least a thickness of a thermal interface.

20. The apparatus of claim 19 , wherein the magnetic material comprises a direct current resistivity to prevent the one or more non-insulated internal conductors from being electrically shorted by the thermally conductive band through the magnetic material.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Sep 1, 2023
From: PERERA, DHAMMIKA L.; WELD, JOHN; WILLOWSKI, MATTHEW
To: MODULAR POWER TECHNOLOGY, INC.
Reel/Frame 064774/0753 →
Continuity (4)
Continuation 17687381 · Mar 4, 2022
Continuation 17495190 · Oct 6, 2021
Provisional Application 63105567 · Oct 26, 2020
Related Publication 20240023291A1 · Jan 18, 2024
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