Part Number: DRV10983
On the first page of the datasheet, I noticed this line: "For Flexibility User May Include External SenseResistor to Monitor Power Delivered to Motor". I have scoured the datasheet (and this forum) for more info related to this but haven't found any more info. Is there a thread that explains this or another PDF somewhere in TI's system with a diagram of the circuit? My customer wants to read the motor current. I told him that it may be discernible from the driver chip's registers (maybe a relative value, and that is okay), but I'm brand new to this chip and don't know how to do that.
Thanks for any guidance you can provide!!
To measure the current you need an external sense resistor from PGND and GND similar to the figure below.
There isn't a good way to get the current information from inside the IC.
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In reply to Brian Schmidt:
Thank you Brian! I appreciate the quick answer. The resistor placement is what I would have guessed but wanted someone with experience with this driver to verify my hunch. Also, not being able to read a current value, even a relative one, from internal register values was not a surprise, but I thought I should ask before assuming I needed an external solution.
Thanks again for the help!!
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