Patent Number: 6,307,457

Title: Planar transformer

Abstract: Planar windings of the secondary coil have outward extending portions which on the outside, so that the vias are situated at a larger distance from the core. In a planar transformer, also the turns of the primary coil may extend parallel to each other. In this manner, it is possible to further reduce the size of the transformer, while the power loss is minimal.

Inventors: Wissink; Wouter M. (Baarle Hertog, BE), Smidt; Pieter J. M. (Eindhoven, NL), Arets; Jan W. (Budel, NL)

Assignee: U.S. Philips Corporation

International Classification: H01F 27/28 (20060101); H01F 005/00 ()

Expiration Date: 10/23/2018