Transformer with controlled leakage inductance
AssigneeVishay Dale Electronics, Inc.
InventorsMatt Foley, Gary Bates, Garrett Caisse, Jason Ebner
Life of this patent
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Abstract
A multi-leg transformer includes a core having a plurality of center posts, a primary coil wound around at least one of the center posts, a secondary coil wound around at least one of the center posts and spaced apart from the primary coil, and at least one magnetic shunt material disposed in one or more selected areas between the primary coil and the secondary coil.
Claims18
A multi-leg transformer comprising:
- a core having a plurality of center posts;
- a primary coil wound around at least one of the center posts;
- a secondary coil wound around at least one of the center posts and spaced apart from the primary coil;
- and
- at least one magnetic shunt material disposed in one or more selected areas between the primary coil and the secondary coil.
The method of claim 15, wherein the at least one magnetic shunt material includes a plurality of pieces of magnetic shunt material.
The method of claim 15, wherein the at least one magnetic shunt material is composed of at least one of ferrite material and iron alloy.
The method of claim 15, wherein tuning the multi-leg transformer includes selecting one or more of the location, volume, and type of the at least one magnetic shunt material.
A bobbin for a multi-leg transformer having a core having a plurality of center posts, a primary coil wound around at least one of the center posts, a secondary coil wound around at least one of the center posts and spaced apart from the primary coil, and at least one magnetic shunt material disposed in one or more selected areas between the primary coil and the secondary coil, the bobbin comprising:
- a plurality of center portions corresponding to the plurality of center posts, each center portion structured to have a coil of the primary coil or secondary coil wound around it;
- at least one insulating barrier disposed between two of the plurality of center posts and structured to provide insulation between coils of the primary coil or the secondary coil;
- and
- at least one capture feature structured to assist the primary coil or secondary coil retain shape around the center posts.
Dependencies are inferred from the claim text.