Hello,
I have 2 different PCB, but both have same connection (shematic enclosure).
Both working, but if I drive them same PWM I get different Voltage/Current in motor ?
What can be wrong. If there is (however???) something different what can cost it ?
MVCC voltage is 30V and not dropping while driving motor.
Driver ordercodes is DRV8873HPWPRQ1
Drivers marking (top of the chip):
"GOOD"
8873HQ
91TG4
AE27
"BAD":
8873HQ
8ATG4
C8QP
Of course driver component works OK, and schematic have same problem, but I can't find error/difference ?!?!
What can do that ?
Best Regards
-Kimmo-