Fabrication method for a winding assembly with a large number of planar layers

摘要

Z-folding of flex circuits is presented as a method of fabricating a transformer winding assembly having a large number of conductive and insulating layers. Flex-circuit patterns. for practical winding configurations are described along with a synthesis procedure. The steps to assemble interleaved planar windings from flex circuits are described. Equations relating winding resistance to geometrical parameters are derived for design purpose.