Part Number:DRV8701
Hi,
I am having issues driving the DRV8701P IC in an bi-directional mode. With the same duty cycle fed into the IC on IN1, I am seeing different speeds at the motor output shaft with no load on the motor. My setup is the following:
Forward Direction:
IN1 - PWM @ 20kHz
IN2 - GPIO High
Reverse Direction
IN1 PWM @ 20kHz
IN2 GPIO Low
I am measuring encoder index on a scope and can see a frequency output. I am concerned that I am not seeing the same frequency in both directions. Am I missing something here?
A followup question: Dan I have the following configuration to achieve the same goal?:
Forward Direction:
IN1 - GPIO High
IN2 - PWM @ 20kHz
Reverse Direction
IN1 - GPIO Low
IN2 - PWM @ 20kHz
Nolan