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DRV8870: how to connect pwm signal so that i can very the speed of motor in forward and reverse direction.

SHUBHAM INGLE
Prodigy 10 points
Part Number: DRV8870

i want to drive a  dc motor using DRV8870 in Forward and Reverse Direction 

but i getting confused on which pins i should apply the pwm signal,

there is IN1 and IN2 

please suggest the connection 

  • 0
    TI__Guru** 114905 points
    Hi Shubman,

    In most cases, you do not need to apply a PWM signal to drive the motor.

    Set IN1 high and IN2 low for forward; and set IN1 low and IN2 high for reverse.

    You can set the maximum current using VREF and the sense resistor.

    If you need to PWM the inputs, PWM IN2 for forward and PWM IN1 for reverse.

    Please note that you the outputs may not follow the inputs if the current exceeds the trip value.