US 12,355,232 B2
Electronic power distribution arrangement for fusing capacitive loads
Michael Wortberg, Dorfen (DE)
Assigned to Lisa Draexlmaier GmbH, Vilsbiburg (DE)
Filed by Lisa Draexlmaier GmbH, Vilsbiburg (DE)
Filed on May 19, 2022, as Appl. No. 17/748,281.
Claims priority of application No. 10 2021 112 935.4 (DE), filed on May 19, 2021.
Prior Publication US 2022/0376488 A1, Nov. 24, 2022
Int. Cl. H02H 7/16 (2006.01); H02H 1/00 (2006.01)
CPC H02H 7/16 (2013.01) [H02H 1/0007 (2013.01)] 13 Claims
OG exemplary drawing
 
1. An electronic power distribution arrangement for fusing a capacitive load, the arrangement comprising:
an electrical line configured to supply power to the capacitive load;
a first electronic switch configured to fuse the capacitive load, the first electronic switch comprising a first switchable current path arranged between a first load terminal and a second load terminal of the first electronic switch, and wherein the electrical line is connected to the first load terminal of the first electronic switch, and wherein the second load terminal of the first electronic switch is connected to a power supply to supply power to the capacitive load;
a second electronic switch configured to precharge the capacitive load prior to switching through the first electronic switch, the second electronic switch comprising a second switchable current path arranged between a first load terminal and a second load terminal of the second electronic switch,
a resistor connected in series with the second switchable current path of the second electronic switch,
a controller configured to control the first electronic switch and the second electronic switch,
wherein the series connection of the resistor to the second electronic switch is connected in parallel with the first switchable current path of the first electronic switch, and
wherein the controller is configured to turn on the second electronic switch to precharge the capacitive load before turning on the first electronic switch to supply power to the capacitive load, and to turn on the first electronic switch only when a voltage across the resistor reaches a threshold value.