MULTI-TURN INDUCTORS
First Claim
1. A multi-winding inductor, comprising:
- a magnetic core having a first side opposite a second side;
a first foil winding passing through the magnetic core from the first side to the second side, a first end of the first foil winding extending from the first side of the core and wrapping under the core to form a first solder tab under the core suitable for surface mount soldering to a printed circuit board, a second end of the first foil winding extending from the second side of the core to form a second solder tab suitable for surface mount soldering to a printed circuit board; and
a second foil winding passing through the magnetic core from the first side to the second side, a first end of the second foil winding extending from the second side of the core and wrapping under the core to form a third solder tab under the core suitable for surface mount soldering to a printed circuit board, a second end of the second foil winding extending from the first side of the core to form a fourth solder tab suitable for surface mount soldering to a printed circuit board;
a portion of the first solder tab being laterally adjacent to a portion of the third solder tab under the magnetic core.
1 Assignment
0 Petitions
Accused Products
Abstract
A multi-winding inductor includes a first foil winding and a second foil winding. One end of the first foil winding extends from a first side of the core and wraps under the core to form a solder tab under the core. One end of the second foil winding extends from a second side of the core and wraps under the core to form another solder tab under the core. Respective portions of each solder tab are laterally adjacent under the magnetic core. A coupled inductor includes a magnetic core including a first and a second end magnetic element and a plurality of connecting magnetic elements disposed between and connecting the first and second end magnetic elements. A respective first and second single turn foil winding is wound at least partially around each connecting magnetic element. Each foil winding has two ends forming respective solder tabs.
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Citations
32 Claims
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1. A multi-winding inductor, comprising:
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a magnetic core having a first side opposite a second side; a first foil winding passing through the magnetic core from the first side to the second side, a first end of the first foil winding extending from the first side of the core and wrapping under the core to form a first solder tab under the core suitable for surface mount soldering to a printed circuit board, a second end of the first foil winding extending from the second side of the core to form a second solder tab suitable for surface mount soldering to a printed circuit board; and a second foil winding passing through the magnetic core from the first side to the second side, a first end of the second foil winding extending from the second side of the core and wrapping under the core to form a third solder tab under the core suitable for surface mount soldering to a printed circuit board, a second end of the second foil winding extending from the first side of the core to form a fourth solder tab suitable for surface mount soldering to a printed circuit board; a portion of the first solder tab being laterally adjacent to a portion of the third solder tab under the magnetic core. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A multi-turn inductor, comprising:
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a magnetic core having a first side opposite a second side; and a multi-turn foil winding, including; a first and a second foil portion each passing through the magnetic core from the first side to the second side, a first end of the first foil portion extending from the second side of the core to form a first solder tab suitable for surface mount soldering to a printed circuit board, and a first foil interconnect wrapping under the core to electrically connect a second end of the first foil portion extending from the first side of the core to a first end of the second foil portion extending from the second side of the core. - View Dependent Claims (14, 15, 16, 17)
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18. A multi-turn drop-in inductor for installing in a printed circuit board aperture, comprising:
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a magnetic core having a first side opposite a second side; a multi-turn foil winding, including; a first and a second foil portion each passing through the magnetic core from the first side to the second side, a first end of the first foil portion extending from the second side of the core to form a first solder tab suitable for surface mount soldering to a printed circuit board, a second end of the second foil portion extending from the first side of the core to form a second solder tab suitable for surface mount soldering to a printed circuit board, the first and second solder tabs disposed at a common height relative to and displaced from a bottom surface of the magnetic core; and a first foil interconnect wrapping under the core to electrically couple a second end of the first foil portion extending from the first side of the core to a first end of the second foil portion extending from the second side of the core. - View Dependent Claims (19, 20, 21, 22)
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23. A coupled inductor, comprising:
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a magnetic core including a first and a second end magnetic element and N connecting magnetic elements disposed between and connecting the first and second end magnetic elements, N being an integer greater than one; and a respective set of single-turn foil windings wound at least partially around each connecting magnetic element, each set of single turn-foil windings including; a first single-turn foil winding having a first end and a second end respectively forming a first and a second solder tab, and a second single-turn foil winding having a first end and a second end respectively forming a third and a fourth solder tab, wherein a portion of the second solder tab is laterally adjacent to a portion of the third solder tab. - View Dependent Claims (24, 25, 26)
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27. A power supply, comprising:
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a printed circuit board; an inductor affixed to the printed circuit board, the inductor including; a magnetic core having a first side opposite a second side, a first foil winding passing through the magnetic core from the first side to the second side, a first end of the first foil winding extending from the first side of the core and wrapping under the core to form a first solder tab under the core surfaced mount soldered to the printed circuit board, a second end of the first foil winding extending from the second side of the core to form a second solder tab surface mount soldered to the printed circuit board, and a second foil winding passing through the magnetic core from the first side to the second side, a first end of the second foil winding extending from the second side of the core and wrapping under the core to form a third solder tab under the core surface mount soldered to the printed circuit board, a second end of the second foil winding extending from the first side of the core to form a fourth solder tab surface mount soldered to the printed circuit board, a portion of the first solder tab being laterally adjacent to a portion of the third solder tab under the magnetic core, the first and third solder tabs being electrically connected by a first trace of the printed circuit board; and a switching circuit affixed to the printed circuit board and electrically connected to the second solder tab by a second trace of the printed circuit board, the switching circuit configured and arranged to switch the second solder tab between at least two different voltages. - View Dependent Claims (28)
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29. A power supply, comprising:
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a printed circuit board; a coupled inductor affixed to the printed circuit board, the coupled inductor including; a magnetic core including a first and a second end magnetic element and N connecting magnetic elements disposed between and connecting the first and second end magnetic elements, N being an integer greater than one, a respective set of single-turn foil windings wound at least partially around each connecting magnetic element, each set of single turn-foil windings including; a first single-turn foil winding having a first end and a second end respectively forming a first and a second solder tab, and a second single-turn foil winding having a first end and a second end respectively forming a third and a fourth solder tab, wherein a portion of the second solder tab is laterally adjacent to a portion of the third solder tab; and N switching circuits affixed to the printed circuit board, each switching circuit electrically connected to a first solder tab of a respective set of single-turn foil windings by a respective trace of the printed circuit board, each switching circuit configured and arranged to switch the first solder tab of its respective set of single-turn foil windings between at least two different voltages. - View Dependent Claims (30)
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31. A power supply, comprising:
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a printed circuit board; a drop-in inductor installed in an aperture of the printed circuit board, the drop-in inductor including; a magnetic core having a first side opposite a second side; a multi-turn foil winding, including; a first and a second foil portion each passing through the magnetic core from the first side to the second side, a first end of the first foil portion extending from the second side of the core to form a first solder tab surface mount soldered to the printed circuit board, a second end of the second foil portion extending from the first side of the core to form a second solder tab surface mount soldered to the printed circuit board, the first and second solder tabs disposed at a common height relative to and displaced from a bottom surface of the magnetic core, and a first foil interconnect wrapping under the core to electrically couple a second end of the first foil portion extending from the first side of the core to a first end of the second foil portion extending from the second side of the core; and a switching circuit affixed to the printed circuit board and electrically connected to the first solder tab by a trace of the printed circuit board, the switching circuit configured and arranged to switch the first solder tab between at least two different voltages. - View Dependent Claims (32)
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Specification