US 12,316,266 B2
Methods and apparatus to detect a stall of a stepper motor
Ganapathi Shankar, Bangalore (IN); Varun Garg, Bengaluru (IN); and Venkata Naresh Kotikelapudi, Bengaluru (IN)
Assigned to Texas Instruments Incorporated, Dallas, TX (US)
Filed by Texas Instruments Incorporated, Dallas, TX (US)
Filed on May 31, 2023, as Appl. No. 18/204,267.
Prior Publication US 2024/0405701 A1, Dec. 5, 2024
Int. Cl. H02P 8/38 (2006.01)
CPC H02P 8/38 (2013.01) 20 Claims
OG exemplary drawing
 
1. An apparatus comprising:
memory including machine-readable instructions;
programmable circuitry configured to execute the machine-readable instructions, the machine-readable instructions to cause the programmable circuitry to at least:
determine a first value of power transferred to a stepper motor during a first operation of the stepper motor;
determine a second value of power transferred to the stepper motor during a second operation of the stepper motor;
determine a load angle of power delivered by the stepper motor during the first operation and second operation of the stepper motor based on the first value, the second value, and a stall power; and
compare the load angle to a stall threshold to detect a stall of the stepper motor.