Part Number:DRV8703D-Q1
I’m seeing conducted emissions when the DRV8703 is not held in sleep mode, with a fundamental around 130-140kHz and many higher-order harmonics. This happens whenever the H-Bridge predriver is not in sleep mode, even when both the outputs are driven low. I suspect the charge pump is the cause, since it has harmonics that are a good match with the spectral peaks I need to suppress. Are there any recommendations for filtering the charge pump?
This may be related to a similar, earlier post about "disturbance".