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drv8301 gvdd_uv fault on drv8301-hc-evm board

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i was trying to follow the motorware lab2c - 3a on a low inductance motor. After a few runs the fault led06 came up as soon as i hit the run button. i read some posts on the possible failure of the driver. but i was using just a small battery pack of 15V on a small motor with very low inductance (measured inductance between phases is 4uh). i wonder what kind of operation may have killed the chip other than overvoltage? i believe the kit is well protected from over current. 

thanks

gz


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