We have developed an isolated thermocouple product for industrial applications that uses these isoPower devices. The parts work well for our purposes but the power supply is horribly inefficient and produces severe radiated emissions at 300mHz (integrated PS switching frequency) and higher harmonics. We've tried everything from PWB layout changes, multi layer boards, ferrites/caps/filters, etc. but still have not been able to reduce the emissions to meet the CE requirments for industrial environments.
Anyone have any experience with this part?
Thanks, Steve