Conducted and Radiated Emissions of Power Chips with High Temperature Environment

We present experimental studies of external temperature impacts on electromagnetic emissions issued from Power Printed Circuit Board (PPCB). A canonical Power PCB has been defined and realized to support comparative EMC characterizations, both in conducted and radiated modes. EMC test setups in these two modes have been completed with a heating system that modifies the external thermal environment of the PPCB, from ambient to 200° C. The new parametric EMC figures obtained led to the discussion of new cases of EM emissions and couplings with electronic devices in harsh environments.