SYSTEMS AND METHODS FOR POWER TRANSFER BASED ON RESONANCE COUPLING OF INDUCTORS
First Claim
1. An integrated circuit (IC), comprising:
- a first resonator circuit that includes first and second inductors, wherein the first resonator circuit is connected to a supply voltage;
a second resonator circuit that includes third and fourth inductors, wherein the second resonator circuit is matched to the first resonator circuit; and
an isolation barrier that separates the first and second resonator circuits,wherein the first and second inductors are inductively coupled to the third and fourth inductors, respectively, thereby providing for transfer of power from the first resonator circuit across the isolation barrier to the second resonator circuit.
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Accused Products
Abstract
An integrated circuit (IC) includes first and second resonator circuits and an isolation barrier. The first resonator circuit includes first and second inductors, wherein the first resonator circuit is connected to a supply voltage. The second resonator circuit includes third and fourth inductors, wherein the second resonator circuit is matched to the first resonator circuit. The isolation barrier separates the first and second resonator circuits. The first and second inductors are inductively coupled to the third and fourth inductors, respectively, thereby providing for transfer of power from the first resonator circuit across the isolation barrier to the second resonator circuit.
9 Citations
20 Claims
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1. An integrated circuit (IC), comprising:
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a first resonator circuit that includes first and second inductors, wherein the first resonator circuit is connected to a supply voltage; a second resonator circuit that includes third and fourth inductors, wherein the second resonator circuit is matched to the first resonator circuit; and an isolation barrier that separates the first and second resonator circuits, wherein the first and second inductors are inductively coupled to the third and fourth inductors, respectively, thereby providing for transfer of power from the first resonator circuit across the isolation barrier to the second resonator circuit. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A system for an integrated circuit (IC), the system comprising:
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a first resonator circuit that includes a first and second inductors and a variable capacitor array, wherein the variable capacitor array includes a plurality of capacitors connected in parallel with an inductor-capacitor (LC) tank in the first resonator circuit, and wherein the first resonator circuit is connected to a supply voltage; a second resonator circuit that includes third and fourth inductors; an isolation barrier that separates the first resonator circuit from the second resonator circuit, wherein the first and second inductors are inductively coupled to the third and fourth inductors, respectively, thereby providing for transfer of power from the first resonator circuit across the isolation barrier to the second resonator circuit; and a control module that tunes the first resonator circuit by controlling at least one of (i) the variable capacitor array and (ii) a switching frequency of the LC tank, based on isolated feedback from the second resonator circuit. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15)
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16. A method for tuning a power transfer system, the method comprising:
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transferring power from a first resonator circuit across an isolation barrier to a second resonator circuit, wherein the first resonator circuit includes first and second inductors inductively coupled to third and fourth inductors in the second resonator circuit; generating isolated feedback based on an output voltage supplied by the second resonator circuit to a load; and based on the isolated feedback, controlling at least one of (i) a switching frequency of an inductor-capacitor (LC) tank in the first resonator circuit and (ii) a capacitance of the LC tank. - View Dependent Claims (17, 18, 19, 20)
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Specification