Dear TI's experts,
I'm using DRV8312 to do sensorless BLDC algorithm without TI's library. I met a problem with the switching schematic:
When a phase is in Hi-Z stage, at the first times working, its voltage was near 9.5V. Then I do switching none complementary and this Hi-Z phase is changed to current returning switch, it is connected to PGND immediately. This cause very high current (I-total) and make the COMP output toggle to high. This effect to TZ module that I use to do current protection. Thus the current fault is always active in stage switching transition.
Could you please share me if I do something wrong? or is there any way to avoid this situation?
Regards,
Fitz