Integrated EMI/Thermal Design for
Switching Power Supplies
This work presents the modeling and analysis of EMI and thermal performance
for switch power supply by using the CAD tools. The methodology and design guidelines
are developed.
By using a boost PFC circuit as an example, an equivalent circuit model is built
for EMI noise prediction and analysis. The parasitic elements of circuit layout and
components are extracted analytically or by using CAD tools. Based on the model, circuit
layout and magnetic component design are modified to minimize circuit EMI. EMI filter
can be designed at an early stage without prototype implementation.