US 11,722,130 B1
System and method for distinguishing short-circuit events in high inrush current systems
Anhtai Le Tran, Garden Grove, CA (US); Imtiaz Ahmad Khan, Trabuco Canyon, CA (US); Farshid Tofigh, Mission Viejo, CA (US); Chad Uyehara, Honolulu, HI (US); and Tony Hana, Anaheim, CA (US)
Assigned to LEACH INTERNATIONAL CORPORATION, Buena Park, CA (US)
Filed by LEACH INTERNATIONAL CORPORATION, Buena Park, CA (US)
Filed on May 2, 2022, as Appl. No. 17/734,584.
Int. Cl. H03K 17/082 (2006.01); H02H 3/087 (2006.01); H01L 27/02 (2006.01)
CPC H03K 17/0822 (2013.01) [H01L 27/0285 (2013.01); H02H 3/087 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A method of protecting a load circuit, the method comprising:
sensing a load current passing through a switch electrically in series with the load circuit;
sensing a voltage drop across the switch;
determining a rate of change of the voltage drop across the switch;
determining whether to deactivate the switch based on the load current and the rate of change of the voltage drop across the switch; and
in response to determining to deactivate the switch,
deactivating the switch to shut off current to the load circuit.