SLOSE54C June 2020 – July 2022 DRV8428
PRODUCTION DATA
In a stepper motor, the full-scale current (IFS) is the maximum current driven through either winding. This quantity depends on the VREF voltage. The maximum allowable voltage on the VREF pin is 3 V for DRV8428. DVDD can be used to provide VREF through a resistor divider. During stepping, IFS defines the current chopping threshold (ITRIP) for the maximum current step. IFS (A) = VREF (V) / 3 (V/A)