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US 2026/0312484 A1Published application
Power converter with switched capacitor voltage divider and multiphase dc-dc voltage regulator
AssigneeThe Trustees of Princeton University
InventorsMinjie CHEN, Youssef ELASSER, Jaeil BAEK, Tanuj SEN
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Abstract
Disclosed is a multiphase coupled inductor structure fabricated without using magnetic materials. The 3D structure of the multiphase inductor creates an enclosed magnetic flux path and ensures close and symmetric coupling of multiple windings. Both theoretical analysis and experimental verification are disclosed.
Claims16
A three-dimensional multiphase air-coupled inductor device, comprising:
- a plurality of air-coupled windings, a main magnetic path of each air-coupled winding operably coupled together in a three-dimensional volume of space;
- and
- where outer surfaces of the plurality of air-coupled windings enclose a three-dimensional surface around the three-dimensional volume of space.
A method of reducing phase current ripple, comprising:
- arranging at least four air-coupled inductors in a three-dimensional structure in a manner such that a current would produce a magnetic flux that points internal to the three-dimensional structure;
- and
- introducing power to the at least four air-coupled inductors in the three-dimensional structure thereby creating flux cancellation through destructive interference of magnetic fields produced by the at least four air-coupled inductors in the three-dimensional structure and reducing a dampening voltage produced by the magnetic flux of the at least four air-coupled inductors.
A method for improving transient response, comprising:
- arranging at least four air-coupled inductors in a three-dimensional structure in a manner such that a current would produce a magnetic flux that points internal to the three-dimensional structure;
- and
- introducing power to the at least four air-coupled inductors in the three-dimensional structure thereby creating flux cancellation through destructive interference of magnetic fields produced by the at least four air-coupled inductors in the three-dimensional structure and reducing a dampening voltage produced by the magnetic flux of the at least four air-coupled inductors causing a reduction in settling time of the at least four air-coupled inductors.
Dependencies are inferred from the claim text.