Partitioned Signal and Power Transfer Across an Isolation Barrier
First Claim
Patent Images
1. A communication system comprising:
- a capacitive isolation barrier;
a transformer isolation barrier; and
first and second circuits coupled across the capacitive isolation barrier and the transformer isolation barrier and configured to transfer power across the transformer isolation barrier and communicate data across the capacitive isolation barrier including power feedback data that controls power transfer across the transformer isolation barrier.
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Abstract
A method for transferring power and information across an isolation barrier comprises transferring power across a power transfer isolation barrier between a primary circuit and a secondary circuit while maintaining isolation between the primary and secondary circuits, and transferring data between the powered system and the isolated system across a communication isolation barrier that is distinct from the power transfer isolation barrier.
128 Citations
71 Claims
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1. A communication system comprising:
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a capacitive isolation barrier; a transformer isolation barrier; and first and second circuits coupled across the capacitive isolation barrier and the transformer isolation barrier and configured to transfer power across the transformer isolation barrier and communicate data across the capacitive isolation barrier including power feedback data that controls power transfer across the transformer isolation barrier. - View Dependent Claims (2, 3)
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4. A communication system comprising:
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first and second transformer isolation barriers; and first and second circuits coupled across the first and second transformer isolation barriers and configured to transfer power across the first transformer isolation barrier and communicate data across the second transformer isolation barrier including power feedback data that controls power transfer across the first transformer isolation barrier. - View Dependent Claims (5, 6)
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7. A communication system comprising:
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a transformer isolation barrier comprising a power winding and a feedback winding; a capacitive isolation barrier; and first and second circuits coupled across the transformer isolation barrier and configured to transfer power across the power winding and communicate power feedback data across the feedback winding that controls power transfer across the transformer isolation barrier, the first and second circuits coupled across the capacitive isolation barrier and configured to communicate data across the capacitive isolation barrier. - View Dependent Claims (8, 9)
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10. A communication system comprising:
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a communication isolation barrier; a transformer isolation barrier; first and second circuits coupled across the communication isolation barrier and the transformer isolation barrier and configured to transfer power across the transformer isolation barrier and communicate data across the communication isolation barrier including power feedback data that controls power transfer across the transformer isolation barrier. - View Dependent Claims (11, 12, 13)
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14. An isolation system comprising:
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a primary circuit and a secondary circuit that communicate across an isolation barrier; the isolation barrier comprising a power transfer isolation barrier and a data communication isolation barrier; the primary circuit comprising a power extraction circuit that receives power from a power source, a Direct Current (DC)-DC converter primary circuit coupled to the power extraction circuit, and a primary communication interface coupled to a communication channel for communicating data; the secondary circuit comprising a DC-DC converter secondary circuit configured to received power transferred from the DC-DC converter primary circuit through the power transfer isolation barrier, an application power interface coupled to the DC-DC converter secondary circuit configured to supply power to an application, a secondary communication interface configured to communicate data with the primary communication interface through the data communication isolation barrier, and a feedback circuit coupled to the secondary communication interface and configured to transmit feedback control data passed through the data communication isolation barrier and control power transfer according to the feedback control data. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22)
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23. An isolation system comprising:
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a primary circuit and a secondary circuit that communicate across an isolation barrier; the isolation barrier comprising a power transfer isolation barrier and a data communication isolation barrier; the primary circuit comprising a Direct Current (DC)-DC converter primary circuit coupled to the power transfer isolation barrier and configured for transmitting power transferred through the power transfer isolation barrier, a secondary communication interface coupled to a communication channel for communicating data, and a feedback circuit coupled to the secondary communication interface and configured to receive feedback control data passed through the data communication isolation barrier and control power transfer according to the feedback control data; and the secondary circuit comprising a DC-DC converter secondary circuit configured to transfer power transferred to the DC-DC converter primary circuit through the power transfer isolation barrier, a secondary communication interface configured to communicate data with the primary communication interface through the data communication isolation barrier, and an application controller configured to control an application. - View Dependent Claims (24, 25, 26)
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27. A communication system comprising:
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a capacitive isolation barrier; a transformer isolation barrier; first and second circuit coupled across the capacitive isolation barrier and the transformer isolation barrier and configured to transfer power across the transformer isolation barrier and communicate data across the capacitive isolation barrier including a clock signal. - View Dependent Claims (28, 29)
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30. A communication device adapted for communicating across an isolation barrier comprising:
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a powered system; an isolated system configured to bidirectionally communicate with the powered system; a power transfer isolation barrier configured to transfer power while maintaining isolation between the powered system and the isolated system; and a digital isolation barrier configured to communicate digital communication signals between the powered system and the isolated system, the power transfer isolation barrier being distinct from the digital isolation barrier. - View Dependent Claims (31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42)
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43. A communication system comprising:
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a primary circuit; a secondary circuit adapted to communicate with the primary circuit; a power transfer isolation barrier coupled between the primary circuit and the secondary circuit configured to transfer power while maintaining isolation between the primary and secondary circuits; and a communication isolation barrier distinct from the power transfer isolation barrier coupled between the primary circuit and the secondary circuit configured to transfer data between the primary circuit and the secondary circuit. - View Dependent Claims (44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55)
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56. A method for transferring power across an isolation barrier comprising:
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transferring power between a powered system and an isolated system across a power transfer isolation barrier while maintaining isolation between the powered system and the isolated system; and bidirectionally communicating information between the powered system and the isolated system over a digital isolation barrier that is distinct from the power transfer isolation barrier. - View Dependent Claims (57, 58, 59, 60, 61, 62)
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63. A method for transferring power and information across an isolation barrier comprising:
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transferring power across a power transfer isolation barrier between a primary circuit and a secondary circuit while maintaining isolation between the primary and secondary circuits; and transferring data between the powered system and the isolated system across a communication isolation barrier that is distinct from the power transfer isolation barrier. - View Dependent Claims (64)
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65. A method for transferring power and information across an isolation barrier comprising:
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transferring power across a power transfer isolation barrier between a primary circuit and a secondary circuit while maintaining isolation between the primary and secondary circuits; transferring feedback control signals between the powered system and the isolated system across a communication isolation barrier that is distinct from the power transfer isolation barrier; and controlling the transfer of power across the power transfer isolation barrier based on the feedback control signals.
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66. A communication system comprising:
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a primary circuit; a secondary circuit adapted to communicate with the primary circuit; a power transfer isolation barrier coupled between the primary circuit and the secondary circuit configured to transfer power while maintaining isolation between the primary and secondary circuits; and a Universal Serial Bus (USB) communication isolation barrier distinct from the power transfer isolation barrier coupled between the primary circuit and the secondary circuit configured to communicate bidirectional USB packet data between the primary circuit and the secondary circuit. - View Dependent Claims (67, 68)
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69. An isolation system comprising:
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a primary circuit and a secondary circuit that communicate across an isolation barrier; the isolation barrier comprising a power transfer isolation barrier and a data communication isolation barrier; the primary circuit comprising a Direct Current (DC)-DC converter primary circuit coupled to the power transfer isolation barrier and configured for receiving power transferred through the power transfer isolation barrier, a primary communication interface coupled to a communication channel for communicating data, and a feedback circuit coupled to the primary communication interface and configured to receive feedback control data passed through the data communication isolation barrier and control power transfer according to the feedback control data; and the secondary circuit comprising a DC-DC converter secondary circuit configured to transfer power to the DC-DC converter primary circuit through the power transfer isolation barrier, a secondary communication interface configured to communicate data with the primary communication interface through the data communication isolation barrier, and an application controller configured to control an application. - View Dependent Claims (70, 71)
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Specification