DRV2700: DRV2700 generates external interference

Hi Team,

Referring to the DRV2700EVM, we designed a 3-way piezoelectric ceramic driver circuit. However, I found that after DRV2700 is enabled to work, it will interfere with some other digital signals on the board, causing significant noise signals on the digital signal level, resulting in signal recognition errors. After three DRV2700 are enabled to work simultaneously, the interference is maximum, and the interference signal disappears after all are turned off. May I ask how DRV2700 generates external interference? What should be done?

Could you help check this case? Thanks.

Best Regards,

Cherry