Device and method for actively controlled protection against transient overload with false-condition shutdown

摘要

An apparatus and method for transient overload with false-condition shutdown are provided herein. In certain configurations, a high voltage tolerant, actively controlled protection circuit includes a transient overload detection circuit, a clamp circuit that is electrically connected between a first node and a second node, a bias circuit that biases the clamp circuit, and a false condition shutdown circuit. The transient overload detection circuit generates a detection signal indicating whether or not an event of transient overload between the first and second nodes is detected. In addition, based on a low-pass filtering of a voltage difference between the first and second nodes, the false-condition shut-down circuit generates a false-condition-disable signal, thereby independently determining whether or not there is power. The bias circuit controls the operation of the clamp circuit in an on state or an off state based on the detection signal and the wrong condition disable signal.