In summary, the DR series inductor selection training module, introduced the SEPIC converter, discussed the features and benefits of this topology to operate over a wide input voltage range. Explained the cost, size and performance benefit of using coupled inductors as compared to using two discrete inductors. Finally to facilitate inductor selection, selection guides are available to quickly choose the inductor needed, or for higher power circuits, use the Versa-Pac calculator to recommend the correct part. Remember that in addition to the Coiltronics brand of power inductors, Cooper Bussmann also manufactures other products that are needed for DC to DC converter designs, including circuit protection products such as fuses, resettable PTCs, and ESD suppression, along with coin-cell supercapacitors for real-time-clock holdup and larger sized supercapacitors for brown out protection.