US 12,395,170 B2
Circuit arrangement and method for actuating a power switch
Oliver Behr, Nuremberg (DE); Günter Katzenberger, Würzburg (DE); Gunter Königsmann, Langensendelbach (DE); and Daniel Obernöder, Iphofen (DE)
Assigned to SEMIKRON DANFOSS ELEKTRONIK GMBH & CO. KG, Nuremberg (DE)
Filed by SEMIKRON DANFOSS ELEKTRONIK GMBH & CO. KG, Nuremberg (DE)
Filed on Nov. 3, 2023, as Appl. No. 18/386,982.
Claims priority of application No. 10 2022 130 027.7 (DE), filed on Nov. 14, 2022.
Prior Publication US 2024/0162900 A1, May 16, 2024
Int. Cl. H03K 17/567 (2006.01); H03K 17/687 (2006.01)
CPC H03K 17/687 (2013.01) [H03K 17/567 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A circuit arrangement, for actuating a power semiconductor switch, wherein:
said power semiconductor switch has a load current input, a load current output and a control input;
said circuit arrangement, further comprising:
a first voltage detection device, which is able to be switched on and off, for detecting a first voltage present between the load current input and the load current output;
a second voltage detection device, which is able to be switched on and off, for detecting a second voltage present between the control input and the load current output; and
a regulating device that is designed to cyclically assess a second voltage value of the second voltage and, if a second threshold value of the second voltage value is reached, to switch on the first voltage detection device, if a fault signal is not present.