This slide provides a brief description about component selection for the Interleaved PFC Reference Design. For the semiconductor components selection, the voltage and current ratings are important. Besides power rating, conduction and commutation losses are also important factors for component selection. These losses will determine the overall efficiency of the system. Semiconductor component loss represents about half of the total system losses. The inductance selection is also related to the output power rating. The higher the output power, the bigger the inductance will be. Another aspect to consider in the inductor selection is the required input current ripple. The output capacitor is chosen so that the output voltage ripple is within specifications. It also depends on the minimum holdup time so that controllers can act before the output capacitor loses its charge. The Equivalent Series Resistance (ESR) of the capacitor also affects the output voltage ripple. Therefore, the capacitor with the lowest possible ESR is recommended. The ESR of the capacitor can be lowered by coupling two capacitors in parallel if the board layout dimensions permit it.