Design graphs for optimizing the energy-storage inductor for DC-to-DC power converters

Three sets of design graphs and equations are developed to facilitate design of the energystorage inductors for DC-to-DC converters. Using the design graphs, a quick estimate of the inductor minimum weight, the transistor peak current, and the inductor power loss can be obtained. Trade-off study can be conveniently conducted using these graphs. Effects of duty cycle controllers, constant frequency and constant t_ON, on the optimal selection of the energy-storage inductors are assessed.