公开(公告)号：EP4113840A1

公开(公告)日：2023-01-04

申请号：EP22180456.0

申请日：2022-06-22

Applicant: STMicroelectronics S.r.l.

Inventor： D'ANGELO, Vittorio ,  CANNAVACCIUOLO, Salvatore ,  BENDOTTI, Valerio ,  SELVO, Paolo ,  ALAGNA, Diego

IPC: H03K17/18 ,  H03K17/689

Abstract: An isolated gate driver device (10) has: a low-voltage section (10a), having a control input (IN PWM ), which receives a PWM control signal (S PWM ) at a switching frequency (f PWM_HV ); a high-voltage section (10b), galvanically isolated from the low-voltage section, having a driving output (OUT DRV ), which provides a gate-driving signal (V G ), as a function of the PWM control signal, to a switch (18) of a power stage (14), and a feedback input (IN FB ), which receives at least one feedback signal (S FB ) 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 (S Trig ) that determines the start of conversion for acquisition of a new sample (S k ) of the feedback signal.