Dear Support,
Here are my schematic design using DRV8825:
I faced strange behaviour as described below:
1. Good one show the peak current is at 1.64A
2. Faulty one, noticed peak current has halved, seems the output current is not enough to drive.
OSC_Vref = 1.03V remain unchanged for good and bad IC. Likewise for osc_delay for both good and bad IC, it's at 1.63V.
Help needed:
1. Can you advice is capaciotr C67, C68 is necessary?
2. If I am using single step, the circuit will work. but i faced some difficulty when using 1/2 or 1/4 step.
3. how can i control and prevent the high inrush current and how tomake sure current limiting work?
Hope to hear from you soon.
Best Regards,
Felix
