US 12,191,850 B2
Isolated gate driver device for a power electrical system and corresponding power electrical system
Vittorio D′Angelo, Nocera Superiore (IT); Salvatore Cannavacciuolo, Villaricca (IT); Valerio Bendotti, Vilminore di Scalve (IT); Paolo Selvo, Milan (IT); and Diego Alagna, Milan (IT)
Assigned to STMicroelectronics S.r.l., Agrate Brianza (IT)
Filed by STMicroelectronics S.r.l., Agrate Brianza (IT)
Filed on Jun. 2, 2023, as Appl. No. 18/328,266.
Application 18/328,266 is a division of application No. 17/807,519, filed on Jun. 17, 2022, granted, now 11,722,133.
Claims priority of application No. 102021000017264 (IT), filed on Jun. 30, 2021.
Prior Publication US 2023/0308097 A1, Sep. 28, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. H03K 17/00 (2006.01); H03K 3/017 (2006.01); H03K 7/08 (2006.01); H03K 17/18 (2006.01); H03K 17/567 (2006.01); H03K 17/687 (2006.01); H03K 17/689 (2006.01); H03M 1/50 (2006.01)
CPC H03K 17/567 (2013.01) [H03K 3/017 (2013.01); H03K 7/08 (2013.01); H03K 17/18 (2013.01); H03K 17/687 (2013.01); H03K 17/689 (2013.01); H03M 1/504 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method comprising:
receiving, at a control input of a low-voltage section of a gate driver, a PWM control signal with a switching frequency;
providing, at an output of a high-voltage section of the gate driver, a gate-driving signal as a function of the PWM control signal to a power stage, wherein the high-voltage section is galvanically isolated from the low-voltage section, receiving, at a feedback input of the high-voltage section, at least one feedback signal indicative of an operation of the power stage;
converting, at an ADC module of the high-voltage section, the feedback signal into a digital data stream;
providing, to the ADC module, a conversion-trigger signal designed to determine a start of a conversion for acquiring a new sample of the feedback signal; and
sending, via an isolation communication channel between the low-voltage section and the high-voltage section, the digital data stream to the low-voltage section.