Transformation device comprising a transformer and electrical components

A transformation device comprising a transformer, first electrical components and connection means, the transformer comprising a first winding and a second winding, one of the first winding and second winding forming at least one primary coil and the other of the first winding and second winding forming at least one secondary coil, the first electrical components being connected via the connection means between first terminals of the first winding, the first electrical components extending over an integration surface situated between the connection means, the integration surface, the connection means and a portion of the first winding forming portions of circulation of a first current circulation loop, the transformation device being arranged for a connection current to circulate in the first current circulation loop, each portion of circulation being wider than it is long in a line of circulation of the connection current.