The design can also be optimized for different parameters using the optimization dial provided. Here is a summary of optimizations done on a buck controller design. In general, at a high optimization number, the frequency is lower, which causes lower AC switching losses. However, it also requires more inductance to limit the ripple current. This results in a larger inductor due to the higher number of turns required and larger overall footprint. At the lower optimization settings, the opposite is true. Higher frequency requires less inductance and thus results in smaller inductors and lower overall footprint. There are additional factors being weighed in the selection process including parasitic resistance (ESR, DCR), component cost, and availability.