Integrated transformer

An integrated transformer, comprising:

• a primary winding;
• a secondary winding;
• wherein each of the primary and secondary windings is made of a metallic material and has a spiral planar arrangement comprising a corresponding plurality of coils;
• and
• a dielectric portion of dielectric material interposed between the primary winding and the secondary winding;
• a field plate winding electrically coupled with the primary winding, the field plate winding comprising at least one field plate coil having a lateral extension greater than a lateral extension of a primary outer coil of the primary winding with the at least one field plate coil overlapping in plan view the primary outer coil of the primary winding, the field plate winding being configured to mutually separate equipotential surfaces of an operating electric field at a secondary winding facing edge of the primary outer coil of the primary winding.