Methods, apparatus, and systems to facilitate multi-channel isolation
AssigneeTexas Instruments Incorporated
InventorsMatthew David Romig, Mayank Garg
Life of this patent
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Abstract
Methods, systems, and apparatus to facilitate multi-channel isolation is disclosed. An example apparatus includes a multiplexer including a first input terminal, a second input terminal, and an output terminal; a modulator including an input terminal and an output terminal, the input terminal of the modulator coupled to the output terminal of the multiplexer; an isolation capacitor including a first terminal and a second terminal, the first terminal of the isolation capacitor coupled to the output terminal of the modulator; a first receiver die coupled to the second terminal of the isolation capacitor; and a second receiver die coupled to the second terminal of the isolation capacitor.
Claims20
An apparatus comprising:
- a controller having a controller input and a controller output;
- a multiplexer having a first multiplexer input, a second multiplexer input, a multiplexer select input, and a multiplexer output, the multiplexer select input coupled to the controller output;
- a modulator having a modulator input and a modulator output, the modulator input coupled to the multiplexer output;
- a capacitor having a first capacitor terminal and a second capacitor terminal, the first capacitor terminal coupled to the modulator output;
- a first die coupled to the second capacitor terminal;
- and
- a second die coupled to the second capacitor terminal.
An apparatus comprising:
- a multiplexer having a first multiplexer input, a second multiplexer input, a multiplexer select input, and a multiplexer output, the multiplexer configured to output a serial data signal at the multiplexer output based on a first data signal received at the first multiplexer input and based on a second data signal received at the second multiplexer input;
- a modulator;
- a capacitor coupled to the multiplexer output via the modulator;
- at least one demodulator;
- a first demultiplexer coupled to the capacitor via the at least one demodulator, the first demultiplexer configured to extract the first data signal from the serial data signal based on a control signal;
- and
- a second demultiplexer coupled to the capacitor via the at least one demodulator, the second demultiplexer configured to extract the second data signal from the serial data signal.
A system comprising:
- a high-voltage stage comprising a first high-voltage power switch having a first gate and a second high-voltage power switch having a second gate;
- a low-voltage stage comprising a controller configured to transmit a first data signal to the first first gate and to transmit a second data signal to the second gate;
- and
- an isolation package coupling the high-voltage stage and to the low-voltage stage, the isolation package comprising:
- a multiplexer having a multiplexer output, the multiplexer configured to output a serial data signal at the multiplexer output based on the first data signal and the second data signal;
- a capacitor coupled to the multiplexer output via a modulator;
- a first demultiplexer configured to extract the first data signal from the serial data signal based on a first clock signal;
- and
- a second demultiplexer configured to extract the second data signal from the serial data signal based on a second clock signal.
Dependencies are inferred from the claim text.