Title

Parasitic Resistance Current Sensing Topology For Coupled Inductors

Keywords

Coupled inductors; Current sensing; DC-DC converter; Inductor parasitic resistance; Power electronics; Voltage regulator

Abstract

Traditional current sensing topology based on inductor equivalent series resistance fails to extract phase currents for coupled inductors due to the presence of the magnetising inductance. This article proposes a new direct-current resistance current sensing topology for coupled inductors. By implementation of a simple resistor-capacitor network, the proposed topology can preserve the coupling effect between phases. As a result, real phase inductor currents and total current can be sensed. Detailed mathematical analysis and design equations are presented in this article. Sensitivity and mismatch issues are addressed. Experimental results show that the proposed topologies are able to extract phase current as well as total current with acceptable accuracy.

Publication Date

1-1-2009

Publication Title

International Journal of Electronics

Volume

96

Issue

1

Number of Pages

51-61

Document Type

Article

Personal Identifier

scopus

DOI Link

https://doi.org/10.1080/00207210802492336

Socpus ID

57049087541 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/57049087541

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