초록 ▼

An inductive device may include a pair of half-shell magnetically-conductive housings joined together and defining an enclosed cavity between them. The inductive device may also include primary and secondary windings provided spatially within the cavity providing magnetic coupling between them. The

An inductive device may include a pair of half-shell magnetically-conductive housings joined together and defining an enclosed cavity between them. The inductive device may also include primary and secondary windings provided spatially within the cavity providing magnetic coupling between them. The windings may be electrically insulated from each other and terminals of the primary and secondary windings may traverse to an exterior of the inductive device.

대표청구항 ▼

1. An inductive device, comprising: a substrate;a pair of half-shell magnetically-conductive housings each having a cavity and being joined together to define a first, enclosed cavity between them, and disposed fully within a second cavity in the substrate; andprimary and secondary windings provided

1. An inductive device, comprising: a substrate;a pair of half-shell magnetically-conductive housings each having a cavity and being joined together to define a first, enclosed cavity between them, and disposed fully within a second cavity in the substrate; andprimary and secondary windings provided spatially within the first cavity to provide magnetic coupling between them, the windings electrically insulated from each other by an insulator disposed between the windings that extends into the cavity of each of the half-shell magnetically-conductive housings, wherein terminals of the primary and secondary windings traverse to an exterior of the inductive device. 2. The device of claim 1, wherein the first, enclosed cavity is an annular cavity and the primary and secondary windings spiral around a portion of magnetically-conductive material. 3. The device of claim 1, wherein the primary winding is provided in the cavity in a first half-shell of the pair of half-shell magnetically-conductive housings, and the secondary winding is provided in the cavity in a second half-shell of the pair of half-shell magnetically-conductive housings. 4. The device of claim 1, wherein the primary and secondary windings are co-planar. 5. The device of claim 1, wherein the magnetically-conductive housings are made of a ferrite material. 6. The device of claim 1, wherein the primary and secondary windings are stacked about a common axis. 7. The device of claim 1, wherein at least one of the primary winding or the secondary winding includes a first conducting layer, a second conducting layer, and at least one conducting through hole. 8. The device of claim 7, wherein the at least one conducting through hole connects strips located in the first conducting layer with strips in the second conducting layer. 9. The device of claim 1, wherein a combined thickness of the insulator, the primary winding, and the second winding is no more than 2 mils. 10. The device of claim 1, wherein at least one of the magnetically-conductive housings includes a base and a projection projecting from the base. 11. The device of claim 10, wherein the at least one of the magnetically-conductive housings includes sidewalls, and wherein a height of the projection matches a height of the sidewalls. 12. A printed circuit board (PCB) comprising: a plurality of PCB layers, including at least one conductor layer and at least one dielectric layer, andan inductive device, provided within a cavity of the printed circuit board that occupies at least two of the PCB layers, the inductive device having a thickness less than that of the PCB and comprising: a pair of half-shell magnetically-conductive housings each having a cavity and being joined together to define an enclosed cavity between them, andprimary and secondary windings provided spatially within the cavity defined by the pair of half-shell magnetically-conductive housings to provide magnetic coupling between them, the windings electrically insulated from each other by an insulator disposed between the windings that extends into the cavity of each of the half-shell magnetically-conductive housings, wherein terminals of the primary and secondary windings traverse to an exterior of the inductive device and are coupled to respective conductors of the printed circuit board. 13. The printed circuit board of claim 12, wherein the enclosed cavity defined by the pair of half-shell magnetically-conductive housings is an annular cavity and the primary and secondary windings spiral around a portion of magnetically-conductive material. 14. The printed circuit board of claim 12, wherein the magnetically-conductive housings are made of a ferrite material. 15. The printed circuit board of claim 12, wherein the primary and secondary windings are stacked about a common axis. 16. The printed circuit board of claim 12, wherein the primary and secondary windings are co-planar. 17. The printed circuit board of claim 12, wherein at least one of the primary or secondary windings is coupled to at least one component on or within the printed circuit board. 18. The printed circuit board of claim 12, wherein at least one of the primary winding or the secondary winding includes a first conducting layer, a second conducting layer, and at least one conducting through hole. 19. The printed circuit board of claim 18, wherein the at least one conducting through hole connects strips located in the first conducting layer with strips in the second conducting layer. 20. The printed circuit board of claim 12, wherein a first of the magnetically-conductive housings is registered with a second of the magnetically-conductive housings. 21. The printed circuit board of claim 12, wherein at least one of the magnetically-conductive housings includes a base and a projection projecting from the base. 22. The printed circuit board of claim 21, wherein the at least one of the magnetically-conductive housings includes sidewalls, and wherein a height of the projection matches a height of the sidewalls. 23. The printed circuit board of claim 22, wherein the sidewalls and the projection define a shape of the cavity defined by the pair of half-shell magnetically-conductive housings as an annulus.