Dear Sir/Madam:
I encountered a problem in our new PCBA with DRV8821. It works in previous PCB version, and there are some modification on other circuit, and DRV8821's RESETn connnection (to high voltage now). Now when I start rotate the stepper motor, it will start to run. It is suppose to run for long time, but after a few seconds, the stepper motor stopped. From the oscilloscope, we find there are waveform at first, but it disappeared after a few seconds.
What are the possible reason for this problem?
Please send me to huiqi.li@thermofisher.com if possible.
Best Regards,
Huiqi Li