Title

Analysis Of Inductor Current Sharing In Nonisolated And Isolated Multiphase Dc-Dc Converters

Keywords

Converter; Current doubler; Current sharing; Dc-dc; Interleaving; Rectifier; Synchronous rectifier

Abstract

Current sharing among inductors is an important issue in both isolated and nonisolated dc-dc converters. In this paper, average current sharing is in-depth modeled and analyzed for both interleaved multiphase buck converters and isolated currentdoubler dc-dc converters. The features and comparison of various current-sharing techniques used in isolated and nonisolated dc-dc converters are presented, and the corresponding design guidelines are provided based on the theoretical analysis. The analysis reveals that the state-of-the-art current-sharing technique for multiphase buck converters cannot be directly applied to isolated currentdoubler rectifier (CDR) dc-dc converters to achieve balanced inductor currents. Passive and active current-sharing methods are proposed for isolated current-doubler dc-dc converters to balance two inductor currents. Experimental results are presented to verify the modeling analysis and the proposed current-sharing techniques for CDRs in isolated dc-dc converters. © 2007 IEEE.

Publication Date

12-1-2007

Publication Title

IEEE Transactions on Industrial Electronics

Volume

54

Issue

6

Number of Pages

3379-3388

Document Type

Article

Personal Identifier

scopus

DOI Link

https://doi.org/10.1109/TIE.2007.905966

Socpus ID

49149125303 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/49149125303

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