GALVANICALLY ISOLATED DC-DC CONVERTER WITH BIDIRECTIONAL DATA TRANSMISSION
First Claim
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1. A galvanic isolation system, comprising:
- a first galvanically isolated link configured to transfer power from a first circuit to a second circuit across a galvanic barrier; and
a second galvanically isolated link comprising a first transformer, wherein the first transformer is configured to feed back an error signal from the second circuit to the first circuit across the galvanic barrier for use in regulating the power transfer and wherein the first transformer is further configured to support bidirectional data communication between the first and second circuits across the galvanic barrier.
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Abstract
A galvanic isolation is provided between a first circuit and a second circuit. A first galvanically isolated link is configured to transfer power from a first circuit to a second circuit across the galvanic isolation. A second galvanically isolated link is configured to feed back an error signal from the second circuit to the first circuit across the galvanic isolation for use in regulating the power transfer and further configured to support bidirectional data communication between the first and second circuits across the galvanic isolation.
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Citations
40 Claims
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1. A galvanic isolation system, comprising:
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a first galvanically isolated link configured to transfer power from a first circuit to a second circuit across a galvanic barrier; and a second galvanically isolated link comprising a first transformer, wherein the first transformer is configured to feed back an error signal from the second circuit to the first circuit across the galvanic barrier for use in regulating the power transfer and wherein the first transformer is further configured to support bidirectional data communication between the first and second circuits across the galvanic barrier. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27)
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28. A galvanic isolation system, comprising:
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a first galvanically isolated link configured to transfer power from a first circuit to a second circuit across a galvanic barrier; and a second galvanically isolated link configured to feed back an error signal from the second circuit to the first circuit across the galvanic barrier for use in regulating the power transfer and further configured to support bidirectional data communication between the first and second circuits across the galvanic barrier, said second galvanically isolated link comprising; a first oscillator of the second circuit providing a radio frequency (RF) control signal modulated by said error signal; a first transformer having a primary winding coupled to outputs of said first oscillator and a secondary winding coupled to the first circuit; at least one first electronic switch coupled in series with at least one capacitor coupled to the secondary winding of the first transformer and configured to modify an impedance of the secondary winding to modulate the RF control signal with first data communicated from the first circuit to the second circuit; and at least one second electronic switch coupled in series with at least one capacitor coupled to the primary winding of the first transformer and configured to modify an impedance of the primary winding to modulate the said RF control signal with second data communicated from the second circuit to the first circuit. - View Dependent Claims (29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40)
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Specification