Optimization of DC-DC Converters via Geometric Programming

Abstract EN

The paper presents a new methodology for optimizing the design of DC-DC converters.

The magnitudes that we take into account are efficiency, ripples, bandwidth, and RHP zero placement.

We apply a geometric programming approach, because the variables are positives and the constraints can be expressed in a posynomial form.

This approach has all the advantages of convex optimization.

We apply the proposed methodology to a boost converter.

The paper also describes the optimum designs of a buck converter and a synchronous buck converter, and the method can be easily extended to other converters.

The last example allows us to compare the efficiency and bandwidth between these optimal-designed topologies.