Hi Team,
IC chip: DRV8873HPWPR
Mode: PWM Mode, "Mode" pin connect to DVDD pin, H bridge, motor connect to OUT1 and OUT2
1. How to control motor from forwad to brake within 2 seconds?
I want to brake motor from full speed to stop within 2 seconds . The input pwm frequence is 20khz, in the forward mode, set IN1 pwm duty as 100% , set IN2 pwm duty as 0, the motor forward at full speed, If I set IN1 and IN2 pwm duty as 0, it will take 7 seconds stop the motor, if i set IN1 and IN2 pwd duty as 100 at the same time, it will take about 5 seconds to stop the motor. So, If I want to stop motor from full speed within 2 seconds, how to set IN1 and IN2
2. How to set ITrip to 10A
I want to set ITrip to 10A, and I have follow the datasheet descriptions, connect the nITRIP pip to DVDD, the IPROPI1 and IPROPI2 connected together with Rsensor, which value is 500R. Then I was try to forced motor stop,
the output current is about 4.5A, same as the default state which ITrip is 6.5A. I think it should output more larger current but it can't.
Could you help check this case? Thanks.
Best Regards,
Cherry