Switched-capacitor DC-DC converters in arbitrary switching mode - topologically derived resistive models based on incremental graph approach.

Marek Makowski

Switched-capacitor DC-DC converters in arbitrary switching mode - topologically derived resistive models based on incremental graph approach.

Abstract

In the preceding paper we reviewed some of modeling approaches aimed at systematic formulation and solution of switched capacitor DC-DC converters. In our review, special attention was paid to computationally efficient and mathematically elegant methods. In so doing we had tried to demonstrate the virtues of unified Incremental Graph (IG) approach. Incremental Graph is, in concept, a tool originally created for analysis and synthesis of electrically degenerated energy conservative networks. We focused, in that former work, on typical conditions, i.e. two-phase converters in slow switching limit (SSL) mode only. In particular, we showed that both voltage gains and charge gains are easily determined on pure topological basis, in terms of IG. The results obtained directly led to a formula for output resistance. The approach is dedicated to SC DC-DC converters and provides a simple means for lossless and lossy model derivation. There, in prediction of further extensions and applications, we promptly communicated our research on models with dependence on duty cycle D and parasitics. In our latest note and in the present article we consequently use topological matrix-based methods instead of well adopted charge and power balance.

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Marek Makowski dr inż.

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Category:: Articles
Type:: artykuły w czasopismach recenzowanych i innych wydawnictwach ciągłych
Published in:: Elektronika : konstrukcje, technologie, zastosowania no. 54, pages 7 - 12,
ISSN: 0033-2089
Language:: English
Publication year:: 2013
Bibliographic description:: Makowski M.: Switched-capacitor DC-DC converters in arbitrary switching mode - topologically derived resistive models based on incremental graph approach.// Elektronika : konstrukcje, technologie, zastosowania. -Vol. 54., nr. 2 (2013), s.7-12
Verified by:: Gdańsk University of Technology