Analysis of the tradeoffs between thermal behavior and EMI noise levels in a boost PFC circuit

The need to provide power factor correction (PFC) and low electromagnetic interference (EMI) is required in a growing number of applications. The boost PFC circuit is widely used to fulfil this requirement because it can easily be implemented to provide a high power factor with high efficiency. The aim of this work is to provide insight into the tradeoffs between reducing the EMI noise levels and the penalties, or advantages, incurred in the thermal performance of the circuit. A 1 kW boost converter with 230 V AC 50 Hz input and 368 V output has been constructed for this study.