Hello,
I'm new at stepper motor control, and new at forum...
I'm working on bipolar NEMA23 3A stepper motor driver, and I worked with DRV8818 but it seems that DRV8818 was not strong enough to run that motor so i chose to go on DRV8412 driver...
As DRV8818 have simple interface (STEP input) i dont realy know how should I generate PWM for DRV8412...
I have read datasheet and I want to use mode 1: Dual full bridges (two PWM inputs each full bridge) or four half bridges with cycle-by-cycle current limit
At the moment i have C2000 Piccolo LaunchPad, and I'd like to control one motor using 4 PWM for DRV8412... I have seen that there is ControlCard with F28035 with program examples, and in near future i will probably use that, but i'd like to understand what i need on PWM inputs to make stepper move...
Can you please give me some explanation how my PWM should look like??? Is there some sequence which I should follow for making a movement in CW or CCW direction?? If PWM on input is not good will that destroy driver?
If i want to get 2.8A from driver with CBC current limiting do I have to use 100kohm OC_ADJ resistor?
Thanks for answer...