US 11,722,133 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. 17, 2022, as Appl. No. 17/807,519.
Claims priority of application No. 102021000017264 (IT), filed on Jun. 30, 2021.
Prior Publication US 2023/0006667 A1, Jan. 5, 2023
Int. Cl. H03K 17/00 (2006.01); H03K 17/567 (2006.01); H03K 3/017 (2006.01); H03K 7/08 (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 17/687 (2013.01); H03K 17/689 (2013.01); H03M 1/504 (2013.01)] 18 Claims
OG exemplary drawing
 
1. An isolated gate driver device comprising:
a low-voltage section having a control input configured to receive a PWM control signal with a switching frequency from a control stage;
a high-voltage section galvanically isolated from the low-voltage section, the high-voltage section comprising:
a driving output configured to provide a gate-driving signal as a function of the PWM control signal to a power stage having at least one switch;
a feedback input configured to receive at least one feedback signal indicative of an operation of the power stage;
an ADC module configured to convert the feedback signal into a digital data stream; and
a conversion-control module coupled to the ADC module and configured to provide a conversion-trigger signal designed to determine a start of a conversion for acquiring a new sample of the feedback signal; and
a communication channel configured to:
provide an isolated communication between the low-voltage section and the high-voltage section, and
send the digital data stream to the low-voltage section to be fed back to the control stage.