Integrated planar transformer and inductor assembly
AssigneeSpace Systems/Loral, Inc.
InventorPaul Clayton
Life of this patent
Estimating the term…
Abstract
An integrated transformer and inductor assembly for use in soft switching or resonant power converters, and the like. The assembly has a planar structure and includes a planar transformer and a parallel inductor. The assembly has a transformer core with a central gap. Planar interleaved primary and secondary winding are separated by insulating layers and are disposed within the transformer core. The parallel inductor is provided by a concentric inductor (reactive) winding disposed adjacent the center of the transformer core, which may be wound around a bobbin. The concentric inductor (reactive) winding carries inductor current, while load current flows mostly in the planar windings. Loss due to magnetizing current is substantially reduced in the present invention.
Claims7
An integrated transformer and inductor assembly comprising:
- a transformer core having a central gap;
- (PA)
- planar interleaved primary and secondary winding separated by insulating layers disposed within the transformer core;
- and (PA)
- a concentric inductor winding disposed adjacent the center of the core between the core and the primary and secondary windings, which surrounds a substantial portion of the central core and the central gap, and which is connected in parallel with the primary or secondary windings.
An integrated transformer and inductor assembly comprising:
- a transformer core having a central gap;
- planar interleaved primary and secondary winding separated by insulating layers disposed within the transformer core;
- a bobbin disposed around the center of the core;
- and
- a concentric inductor winding wound around the bobbin that is disposed between the core and the primary and secondary windings, which surrounds a substantial portion of the central core and the central gap, and which is connected in parallel with the primary or secondary windings.
Dependencies are inferred from the claim text.