Planar transformer arrangement

Details Planar transformer arrangement Planar transformer arrangement

2006-05-09

2006-05-09

Nguyen, Tuyen T (Department: 2832)

Inductor devices

Coil or coil turn supports or spacers

Printed circuit-type coil

Reexamination Certificate

active

07042325

ABSTRACT:
A planar transformer arrangement and method provide isolation between an input signal and an output signal. The planar transformer arrangement includes a planar medium having a first layer, a second layer, and a dielectric interlayer arranged between the first and second layers; at least one meandering primary winding arranged on the first layer of the planar medium, a current flow being induced within the primary winding in accordance with the input signal; at least one meandering secondary winding arranged on the second layer of the planar medium, the primary and secondary windings forming a planar transformer, whereby a voltage is induced across the secondary winding in accordance with the current flow within the primary winding; and a mode elimination arrangement configured to produce a compensated voltage by compensating for a common mode interference on the voltage induced across the secondary winding, the mode elimination arrangement being further configured to generate the output signal in accordance with the compensated voltage; wherein the dielectric interlayer of the planar medium provides a voltage isolation between the primary and secondary windings.

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Department of Electronic Engineering, S. Tang, S. Hui and H. Chung, “A Low-Profile Power Converter Using Printed-Circuit Board (PCB) Power Transformer Shielded With Ferrite Polymer Composite” 2000 IEEE pp. 1-6.
IEEE Transactions on Power Electronics, vol. 14, No. 3, May 1999 “Coreless Printed Circuit Board (PCB) Transformers for Power MOSFET/IGBT Gate Drive Circuits” pp. 422-430, S. Hui, H Chung and S. Tang.
Electronic Letters, May 28, 1998, vol. 34, No. 11 pp. 1052-1054 “Coreless printed-circuit board transformers for signal and energy transfer”.

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