This application note will provide information to assist in the specification of IHLP composite inductors based on given operating conditions utilizing Vishay’s IHLP application sheets. It is assumed that the designer has a basic understanding of non-isolated dc-to-dc converters as this is not a design exercise in that family of converters. Tools will be introduced to allow the designer to select an IHLP inductor and estimate its performance in their applications. These tools will work for buck, boost and buck/boost topologies. A set of application sheets will be provided containing all the relevant constants and equations needed for the selection process.