Optimization of the energy-storge inductors for dc-to-dc converters

Three sets of design graphs and equations are developed to facilitate design on the energy-storage 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. Tradeoff studies can be conveniently conducted using these graphs. The effects of duty cycle controllers, constant frequency, and constant on-time on the optimal selection of the energy storage inductors are assessed.