Inductor for an electrical system
First Claim
1. An inductor comprising:
- a core defining a first electromagnetic path, a second electromagnetic path and a third electromagnetic path, said first and second magnetic paths distinct from one another, said third electromagnetic path substantially closing said first and said second electromagnetic paths;
a first electrical coil wound about at least a portion of said first electromagnetic path; and
a second electrical coil wound about at least a portion of said second electromagnetic path;
wherein said first electromagnetic path contains a first air gap and said second electromagnetic path contains a second air gap.
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Accused Products
Abstract
In one embodiment of the present invention, an inductor comprises a core defining a first electromagnetic path, a second electromagnetic path and a third electromagnetic path, the third electromagnetic path substantially closing the first and second electromagnetic paths. The inductor also includes a first electrical coil wound about at least a portion of the first electromagnetic path and a second electrical coil wound about at least a portion of the second electromagnetic path. Another embodiment of the present invention uses the inductor in an electrical system such as a DC-to-DC converter. Inductors constructed according to the present invention can be used to provide "common mode" inductance and "differential mode" inductance in a single inductor.
37 Citations
18 Claims
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1. An inductor comprising:
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a core defining a first electromagnetic path, a second electromagnetic path and a third electromagnetic path, said first and second magnetic paths distinct from one another, said third electromagnetic path substantially closing said first and said second electromagnetic paths; a first electrical coil wound about at least a portion of said first electromagnetic path; and a second electrical coil wound about at least a portion of said second electromagnetic path; wherein said first electromagnetic path contains a first air gap and said second electromagnetic path contains a second air gap. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. An inductor comprising:
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a first E-core member comprising first, second and third parallel legs; a second E-core member comprising fourth, fifth and sixth parallel legs pointing toward said first, second and third parallel legs, respectively; and an I-core member disposed between said first and second E-core members. - View Dependent Claims (13, 14, 15)
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16. An inductor comprising:
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a first E-core member comprising first, second and third parallel legs; a second E-core member comprising fourth, fifth and sixth parallel legs pointing toward said first, second and third parallel legs, respectively; a first I-core member disposed between said first and fourth legs and pointing perpendicular to said first and fourth legs; a second I-core member disposed between said third and sixth legs and pointing perpendicular to said third and sixth legs; a first electrical coil wound about a said leg of said first E-core; and a second electrical coil wound about a said leg of said second E-core. - View Dependent Claims (17, 18)
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Specification