Level shifter having feedback signal from high voltage circuit

摘要

According to an exemplary implementation, a level shifter includes a low voltage circuit and a high voltage circuit. The low voltage circuit is configured to provide a differential signal to the high voltage circuit. The high voltage circuit is configured to receive the differential signal from the low voltage circuit so as to level shift the differential signal from a first ground of the low voltage circuit to a second ground of the high voltage circuit. The differential signal is provided by the low voltage circuit responsive to a feedback signal from the high voltage circuit. The feedback signal can indicate common mode noise in the level shifter. Furthermore, the low voltage circuit can be configured to refresh the differential signal responsive to the feedback signal.

主权项

1. A level shifter comprising:
a low voltage circuit and a high voltage circuit; said low voltage circuit configured to provide a differential signal to said high voltage circuit; said high voltage circuit configured to receive said differential signal from said low voltage circuit so as to level shift said differential signal from a first ground of said low voltage circuit to a second ground of said high voltage circuit; wherein said differential signal is provided by said low voltage circuit responsive to a feedback signal from said high voltage circuit.