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DRV8462EVM: DRV8462EVM

Phillip Bothma
Prodigy 60 points
Part Number: DRV8462EVM

Tool/software:

Hi TI,

We accidently shorted across one of the motor outputs to ground of another DRV8462EVM board. I am able to control the motor via H/W with the faulty board (nfault was red and is no longer) but when I go to SPI and click awake I can see in the register map that every bit of each register is 1 even when flipping the reset bit. What can be done to repair the PCB?  

  • 0
    Prodigy 60 points

    The second board I can control the stepper motor via SPI but when I try to select certain configurations ie set current limit higher I am unable to via the GUI = all registers are also showing up as 1 despite being able to control the motor?

  • 0
    TI__Mastermind 19350 points

    Hi Phillip,

    I will look into this on Monday and get back to you when I know more. 

    Best,

    David

  • 0 in reply to Phillip Bothma
    TI__Mastermind 19350 points

    Hi Phillip,

    If possible, could you describe or show the setup of the output short? What was motor voltage and how long was it shorted? Did you see or smell any smoke/plastic?

    If you are still able to drive a motor with the "bad" EVM, it might still be ok. I would check all the signals including, all SPI and nFAULT signal with output signals with an o-scope to make sure they look ok. 

    Before the short occurred, was the register configuration different?

    Best,

    David