Pre-layout DC-DC converter conductive EMI level estimation.

Designers of modern DC-DC converters for automotive and industrial systems challenges the issue of electromagnetic compatibility. Improper conducted emission level estimation leads to changes in the layout and the schematic of the device, which entails additional costs or increase the module development time. The paper solves the problem of increasing the accuracy of a conducted EMI simulation results for DC-DC converters by using component models that take into account parasitic parameters. A proposed approach for DC-DC converters design automation is using RLCG-models of printed circuit board traces and a library of reference layout solutions. The paper proposes a modified DC-DC converter design flow in order to reduce product development time. The measured results of conducted EMI from the designed step-down buck DC-DC converter module are presented and it is shown that including in the simulation circuit of preliminary estimated parasitic parameters at the pre-layout design stage helps to obtain an EMI profile close to profile obtained as a circuit simulation with extracted PCB parasitic parameters. [ABSTRACT FROM AUTHOR]