US 12,113,518 B2
Circuit arrangement for controlling a plurality of semiconductor switches connected in parallel
Calin Purcarea, Muehlacker (DE); Daniel Schweiker, Ludwigsburg (DE); Matthias Boesing, Ludwigsburg (DE); Tim Bruckhaus, Asperg (DE); and Tobias Richter, Bietigheim-Bissingen (DE)
Assigned to Robert Bosch GmbH, Stuttgart (DE)
Appl. No. 17/763,176
Filed by Robert Bosch GmbH, Stuttgart (DE)
PCT Filed Aug. 28, 2020, PCT No. PCT/EP2020/074079
§ 371(c)(1), (2) Date Mar. 23, 2022,
PCT Pub. No. WO2021/058227, PCT Pub. Date Apr. 1, 2021.
Claims priority of application No. 10 2019 214 539.6 (DE), filed on Sep. 24, 2019.
Prior Publication US 2022/0345125 A1, Oct. 27, 2022
Int. Cl. H03K 17/082 (2006.01)
CPC H03K 17/082 (2013.01) [H03K 2217/0027 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A circuit arrangement (200, 200′) for controlling a plurality of semiconductor switches (120) connected in parallel, the circuit arrangement comprising:
a switch-on terminal (213),
a switch-off terminal (214),
a plurality of control terminals (220), which are each provided for connection to a control terminal (123) of one of the plurality of semiconductor switches (120),
wherein the switch-on terminal (213) and the switch-off terminal (214) are each connected to each of the plurality of control terminals (220), and wherein a potential of the switch-on terminal (213) is switchable, and
wherein a switch disconnector (230) is provided between the switch-on terminal (213) and at least one of the control terminals (220),
further comprising
at least one detection and control arrangement (260, 280), which is designed to detect a current flow into the at least one of the control terminals (220) and, when a short circuit is identified from the current flow exceeding a preset threshold value for at least a preset time period, to control the switch disconnector (230) causing it to open, and
a diode (235) provided between the switch-off terminal (214) and the at least one of the control terminals (220), the diode (235) having its forward direction in the direction of the switch-off terminal (214), and the diode connected to the switch-off terminal (214) and a switch-off resistor, the switch-off resistor provided between the switch-off terminal (214) and the at least one of the control terminals (220).