Electrical transformer to transmit data and power
AssigneeTexas Instruments Incorporated
InventorsERICH JOHANN BAYER, JOHANN ZIPPERER, CHRISTOPHE VAUCOURT, TOBIAS BERNHARD FRITZ
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Abstract
In described examples, a system includes a transformer including a primary winding and a secondary winding. The system also includes a primary side circuit coupled to the primary winding of the transformer. The primary side circuit includes a primary controller. The system further includes a secondary side circuit coupled to the secondary winding of the transformer. The primary controller coupled to cause the primary side circuit to transfer power and intermittently transmit data to the secondary side circuit via the primary winding and the secondary winding of the transformer.
Claims20
(canceled)
(canceled)
A system comprising:
- a transformer comprising a primary winding and a secondary winding;
- a primary side circuit coupled to the primary winding of the transformer, the primary side circuit comprising a primary controller;
- and
- a secondary side circuit coupled to the secondary winding of the transformer, the secondary side circuit comprising a secondary controller coupled to receive first data and transmit second data to the primary controller via the transformer;
- the primary controller being coupled to cause the primary side circuit to:
- transfer power and intermittently transmit the first data to the secondary side circuit via the primary winding and the secondary winding of the transformer;
- and short a first node and a second node of the primary winding of the transformer to request an opening of a data transmission window to transmit the first data from the primary side circuit to the secondary side circuit.
A system comprising:
- a transformer comprising a primary winding and a secondary winding;
- a primary side circuit coupled to the primary winding of the transformer, the primary side circuit comprising:
- a primary controller;
- and
- a clock generator coupled to output a first pair of signals oscillating at a predetermined frequency;
- and
- a secondary side circuit coupled to the secondary winding of the transformer, the secondary side circuit comprising:
- a secondary controller;
- and
- a clock recovery circuit coupled to output a second pair of signals oscillating at the predetermined frequency, wherein the primary side circuit is coupled to transfer power to the secondary side circuit via the transformer;
- and
- wherein the primary controller is coupled to intermittently cause a short at the primary winding to indicate a transmission of first data to the secondary controller via the transformer and the secondary controller is coupled to intermittently cause a short at the secondary winding to indicate a transmission of second data to the primary controller via the transformer.
(canceled)
A method comprising:
- transferring power from a first winding of a transformer to a second winding of a transformer;
- shorting the first winding of the transformer to induce a rapidly rising current on the second winding of the transformer;
- transmitting data from the first winding to the second winding during a data transmission window that is opened in response to the rapidly induced rising current;
- and
- shorting, in an echo operation, the second winding in response to opening the data transmission window.
Dependencies are inferred from the claim text.