Capacitive level shifter devices, methods and systems

摘要

Systems and methods of use relate to a circuit that is designed to detect the state of two control signals, wherein one control signal indicates an ON state for the gate driver and the other control signal indicates an OFF state for the gate driver. The circuit responds to each of the control signals by controlling the gate driver so that it drives an output either high or low. The circuit can also be configured to control the gate driver so that it to drives the output (either high or low) when neither control signal is present.

主权项

1. A device comprising:
in a first voltage domain, a first signal driver circuit configured and arranged to generate a first signal with information that is encoded using a presence of a carrier wave, and a second signal driver circuit configured and arranged to generate a second signal with information that is encoded using a presence of a carrier wave; in a second voltage domain, a first determination circuit, configured and arranged to detect the presence of a carrier wave on a first input, and a second determination circuit, configured and arranged to detect the presence of a carrier wave on a second input; a first signal path capacitively coupling the first signal to the first input; a second signal path capacitively coupling the second signal to the second input; a first output circuit configured and arranged to drive, in response to a detection of a carrier wave from the first determination circuit, an output node to a high voltage in the second voltage domain; and a second output circuit configured and arranged to drive, in response to a detection of a carrier wave from the second determination circuit, the output node to a low voltage in the second voltage domain.