Driving configuration of a switch

Abstract

A driving circuit of a switch includes first and second transistors connected in series to each other and to relative intrinsic diodes in antiseries and driven by a driving device that includes at least one first and one second output terminal connected to the switch to supply it with a first control signal for driving the switch in a first working state and a second control signal for driving the switch in a second working state. At least one latch circuit coupled between respective common gate and source terminals of the first and second transistors supplies the common gate terminal with the first and second control signals, respectively, according to the working state to turn off and turn on the first and second transistors. The latch circuit comprises at least one flip-flop coupled to the common source terminal and having a reset terminal coupled to the first output terminal of the driving device and to the common source terminal by means of a reset resistance, a set terminal coupled to the second output terminal of the driving device and to the common source terminal by means of a set resistance and an output terminal coupled to the common gate terminal. The latch circuit further includes an activation circuit connected to the set and reset terminals of the flip-flop and to the common source terminal in order to dynamically short-circuit the set and reset resistances during the falling edges of the signal applied to the switch.