US 11,658,597 B1
Single-shunt current measurement
Anton Babushkin, Kyiv (UA); Serhii Korol, Kyiv (UA); Yaroslav Smirnov, Kyiv (UA); Dmytro Sakharov, Kyiv (UA); Masahira Kurihara, Prague (CZ); Kamyar Khosravi, Manchester, NH (US); and Vadym Khudobets, Kyiv (UA)
Assigned to Allegro MicroSystems, LLC, Manchester, NH (US)
Filed by Allegro MicroSystems, LLC, Manchester, NH (US)
Filed on Dec. 20, 2021, as Appl. No. 17/645,118.
Int. Cl. H02P 23/14 (2006.01); G01R 29/02 (2006.01); H02P 29/00 (2016.01)
CPC H02P 23/14 (2013.01) [G01R 29/02 (2013.01); H02P 29/00 (2013.01)] 25 Claims
OG exemplary drawing
 
1. A method for use in a controller, the method comprising:
receiving a first current measurement that is taken at a first predetermined time instant;
receiving a second current measurement that is taken at a second predetermined time instant;
classifying the first current measurement as corresponding to one of a plurality of electrical signals, the first current measurement being classified based, at least in part, on a duty cycle pattern of the plurality of electrical signals;
classifying the second current measurement as corresponding to another one of the plurality of electrical signals, the second current measurement being classified based, at least in part, on the duty cycle pattern of the plurality of electrical signals; and
adjusting a duty cycle of at least one of the electrical signals based on the first current measurement, the classification of the first current measurement, the second current measurement, and the classification of the second current measurement,
wherein the first current measurement and the second current measurement are taken by using a same shunt resistor.