Hello;
We used same circuit and layout with same components with UCC28704EVM-724 board in our system, but we got bad results in radiated emission test. We solwed all frequency without 30MHz but the noise at 30MHz is constantly disturbing the environment. We tried EMI filters, CMM's , Ferrites but none of them worked. When we examine it with the near field probe, the noise seems to be spreading through the transformer. noise continued to spread even when we wrapped the transformer with copper tape. Do you have any idea about this problem?