US 11,881,759 B2
Circuit to transfer a signal between different voltage domains and corresponding method to transfer a signal
Fabrizio Bognanni, Piacenza (IT); Giovanni Caggegi, Cornaredo (IT); Giuseppe Cantone, Bareggio (IT); Vincenzo Marano, Cinisello Balsamo (IT); and Francesco Pulvirenti, Acireale (IT)
Assigned to STMICROELECTRONICS S.r.l., Agrate Brianza (IT)
Filed by STMICROELECTRONICS S.r.l., Agrate Brianza (IT)
Filed on Aug. 15, 2022, as Appl. No. 17/888,001.
Application 17/888,001 is a continuation of application No. 17/229,554, filed on Apr. 13, 2021, granted, now 11,451,130.
Claims priority of application No. 102020000010117 (IT), filed on May 6, 2020.
Prior Publication US 2022/0393567 A1, Dec. 8, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. H02M 1/08 (2006.01); H02M 3/07 (2006.01); H02M 3/158 (2006.01); H03K 17/687 (2006.01)
CPC H02M 1/08 (2013.01) [H02M 3/07 (2013.01); H02M 3/158 (2013.01); H03K 17/6872 (2013.01); H03K 2217/0081 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A circuit, comprising:
two current paths each including a respective controlled current generator coupled to a floating voltage through a respective resistor;
a same negative bootstrap circuit coupled to each of the two current paths; and
a same pulse generator coupled to each of the two current paths, and configured to generate two pulse signals to control the two current paths, respectively,
wherein the respective controlled current generator is controlled by a respective pulse signal of the two pulse signals, and the same negative bootstrap circuit includes a pump capacitor coupled to provide a negative voltage at a first node of each of the controlled current generators of the two current paths under control of at least one of the two pulse signals.