ISOLATED GATE DRIVER DEVICE FOR A POWER ELECTRICAL SYSTEM AND CORRESPONDING POWER ELECTRICAL SYSTEM

An isolated gate driver device (10) has: a low-voltage section (10a), having a control input (INPWM), which receives a PWM control signal (SPWM) at a switching frequency (fPWM_HV); a high-voltage section (10b), galvanically isolated from the low-voltage section, having a driving output (OUTDRV), which provides a gate-driving signal (VG), as a function of the PWM control signal, to a switch (18) of a power stage (14), and a feedback input (INFB), which receives at least one feedback signal (SFB) indicative of the operation of the power stage; and a communication channel (15), which implements an isolated communication between the low-voltage and high-voltage sections. The high-voltage section comprises an ADC module (22), which converts the feedback signal into a digital data stream, and a conversion-control module (24), coupled to the ADC module for providing a conversion-trigger signal (STrig) that determines the start of conversion for acquisition of a new sample (Sk) of the feedback signal.