ZHCSH31B August 2017 – February 2018 DRV10987
A fast change in the applied drive current may result in a sudden change in the driving torque. In some applications, this could result in acoustic noise. To avoid this, the DRV10987 device allows the option of limiting the rate at which the current is applied to the motor. OpLCurrRt[2:0] sets the maximum voltage ramp-up rate that is applied to the motor. The waveforms in Figure 26 show how this feature can be used to gradually ramp the current applied to the motor.
|Start Driving With Fast Current Ramp||Start Driving With Slow Current Ramp|