Optimization of DC-DC Converters via Geometric Programming. (15th September 2011)

• Record Type: Journal Article
• Authors: Ribes-Mallada, U.; Leyva, R.; Garcés, P.
• Other Names: de Pinho Maria do Rosário Academic Editor.
• Is Part Of: Mathematical problems in engineering. Volume 2011(2011)
• Publication Date: 2011-09-15
• Subjects: Engineering mathematics -- Periodicals; 510.2462
• DOI: 10.1155/2011/458083
• Languages: English
• ISSNs: 1024-123X

Abstract

Abstract : 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.