US Patent 11171646 Turn-off detection circuits for anti-series switches

In some examples, a circuit is configured to control an anti-series switch comprising a first transistor and a second transistor coupled in an anti-series configuration. The circuit comprises one or more driver circuits configured to control gates of the first transistor and the second transistor, and a detection circuit configured to detect whether both the first transistor and the second transistor are in an OFF state. The detection circuit is configured to deliver a signal to the anti-series switch, detect the signal in the anti-series switch, and determine whether the both the first transistor and the second transistor are in an OFF state based on the detected signal.