Innovative planar electromagnetic component structure

A transformer comprising:

• a primary circuit comprising a primary winding of N1 turns of an electrical conductor, the primary winding extending from an input primary terminal to an output primary terminal;
• and
• a secondary circuit comprising a secondary winding of N2 turns of an electrical conductor, the secondary winding extending from an input secondary terminal to an output secondary terminal, N1 and N2 being each an integer number greater than or equal to 1;
• the transformer comprising:
• a printed circuit board extending according to a first plane, and comprising a plurality of layers superposed on one another and forming an aperture through the first plane around a first axis (Z1) and defining a perimeter;
• a ferromagnetic core, disposed around the primary and secondary windings, comprising a central part disposed in the aperture;
• a plurality of vias disposed at the centre of the primary and secondary windings on the perimeter of the aperture, and extending through the layers, each on an axis parallel to the first axis (Z1), the plurality of vias being configured to interconnect the plurality of layers;
• in that the N1 turns and the N2 turns of the electrical conductor are each disposed on one of the plurality of layers, according to any alternation between the N1 turns and the N2 turns, each of the N1 turns and of the N2 turns being wound, from a first via of the plurality of vias, partially around the plurality of vias forming a circular arc per layer, to a second via of the plurality of vias;
• and in that the circular arc of one layer is distinctly oriented with respect to the circular arcs of the other layers and has an orientation distinct from the circular arcs of the other layers.