By Topic

Analysis of Nested Winding Dielectric-Core Transformers for Ethernet Applications

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$33 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

4 Author(s)
David Bowen$^{1}$ Electrical and Computer Engineering Department,, University of Maryland at, College Park,, USA ; Andrew Lee ; Charles Krafft ; Isaak D. Mayergoyz

The current design of wide-band Ethernet isolation transformers uses interleaved windings to minimize leakage inductance. A superior alternative to interleaved windings is a nested winding geometry, where the primary winding toroid is nested entirely within the secondary winding toroid. Nesting windings will reduce leakage inductance, enable the control of cross-winding capacitance, and allow the turn-ratio to be adjusted away from unity. In this paper, nested winding transformers are built and measured to verify the expected improvement in flux confinement and cross-winding capacitance control over interleaved winding transformers. Measurements verified the improved flux confinement over comparable interleaved winding devices, as well as the ability to reduce cross-winding capacitance by increasing the nested separation without impacting inductive behavior. The bandwidth limiting issue of intra-winding capacitance is also discussed.

Published in:

IEEE Transactions on Magnetics  (Volume:48 ,  Issue: 11 )