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RE: CCS/DRV8301: nFAULT pin asserted and fluctuating before activating PWMs

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Hi Phil,

Thank you for your quick reply. I need to confirm the SPI is actually working - I did check VDD_SPI with a scope and it is fine. I will try and read and write something to the DRV8301.

Regarding the nFAULT pin timing, before activating the PWM, nFAULT is low(fault active) for about 5 ms, and high for about 0.6ms. There are also very short spikes occuring every 0.6 m.s while low.

When activating the PWM, nFAULT is constantly low with short spikes occuring every 0.6 m.s.

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