Transformer used as a series inductor for ZVS or LLC resonance converters

摘要

A transformer used as a series inductor for ZVS or LLC resonant converters, comprising: - a magnetic core with a cylindrical or polygonal cross-section; - a coil (1) made of an electrical insulating material, which provides a coil body; - A primary winding (2) and secondary winding (4) which are electrically insulated and coaxially wound around an annular groove of the coil, the coil (1) having extensions (1b) which are set up at connections (5) for electrical connection with to be attached to the primary winding (2) and the secondary winding (4), characterized in that a flexible magnetic film (3) with low permeability is arranged between the primary winding (2) and the secondary winding (4), which at least the magnetic film (3) partially surrounded around the primary winding (2), the three elements: primary winding (2), magnetic film (3) and secondary winding (4) being coaxial to one another and coaxially surrounding the magnetic core, which is surrounded by a hollow core (1a) of the coil (1) is introduced.