SLOSE59C May 2020 – July 2022 DRV8424 , DRV8425
PRODUCTION DATA
In some cases, the full-scale output current may need to be changed between many different values, depending on motor speed and loading. The voltage of the VREF pin can be adjusted in the system to change the full-scale current.
In this mode of operation, as the DAC voltage increases, the full-scale regulation current increases as well. For proper operation, the output of the DAC should not rise above 3.3V for DRV8424 and 2.64V for DRV8425.
The VREF pin can also be adjusted using a PWM signal and low-pass filter.