IL is the average value of inductor current, and it equals toIBAT or IBUS.Besides DC power loss, there are also inductor AC windingloss and inductor core loss, which are related to inductorpeak current. Normally, higher peak current causes higherAC loss and core loss. The user can consult with the inductorvendor to select the inductors which have small ESR at highfrequency and small core loss.