US 11,855,444 B2
Functional safety mechanism for detection of a fault in a leadframe
Ozan Serpedin, Constanta (RO); and Cristian Garbossa, Bressanone (IT)
Assigned to Infineon Technologies AG, Neubiberg (DE)
Filed by Infineon Technologies AG, Neubiberg (DE)
Filed on Apr. 9, 2021, as Appl. No. 17/226,737.
Prior Publication US 2022/0329060 A1, Oct. 13, 2022
Int. Cl. H02H 7/00 (2006.01); H02H 7/12 (2006.01); H02H 1/00 (2006.01); G05F 1/56 (2006.01)
CPC H02H 7/1213 (2013.01) [G05F 1/56 (2013.01); H02H 1/0007 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A system comprising:
a power converter comprising an output terminal and configured to receive an input voltage at a first magnitude and output a voltage at a second magnitude at the output terminal;
a voltage monitoring circuit coupled to the output terminal; and
a signal injection circuit coupled to the output terminal of the power converter, the signal injection circuit configured to input a check signal at the output terminal;
wherein the voltage monitoring circuit is configured to detect a fault signal at the output terminal based on the combined fault signal and the check signal exceeding a detection voltage threshold.