SLVSD39D October 2015 – March 2020 DRV8885
PRODUCTION DATA.
In a stepper motor, the full-scale current (IFS) is the maximum current driven through either winding. This quantity will depend on the RREF resistor and the TRQ setting. During stepping, IFS defines the current chopping threshold (ITRIP) for the maximum current step.
Note that IFS must also follow Equation 8 in order to avoid saturating the motor. VM is the motor supply voltage, and RL is the motor winding resistance.