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DRV8243H-Q1EVM: Output voltage slightly drops periodically

Part Number: DRV8243H-Q1EVM
Other Parts Discussed in Thread: DRV8243-Q1, , LM74610-Q1

Hello, Team,

We have 2 questions related to DRV8243-Q1 and its EVM.

  1. Customer found out that there is a periodical voltage drop when using DRV8243H-Q1EVM:

    Frequency is 2.5kHz and the device is in a full-bridge operation. VM = 18V supplied from a stable power supply.
    Every 1.284 sec, there is a slight voltage drop as seen in the above figure.

    What would be the reason? Can we fix this?

  2. When VM pin = 0V but nFAULT pin pulled up with 10kOhm, is it ok with this condition which current flows?

Best Regards,