Disclosed herein is a transformer including: an iron core; and a winding wound around the iron core; wherein the iron core includes a column-shaped output side iron core part, a plurality of column-shaped input side iron core parts, and a connecting iron core part, the winding includes a plurality of primary windings, a secondary winding, and generated magnetic fluxes.
A vertical winding structure for planar integrated magnetics used in switched-mode power converters maintains close coupling between the different windings but reduces the eddy current losses, lowers the DC winding resistance and reduces the number of layers of the PCB. Vertical and horizontal windings can be used together without sacrificing these performance advantages and further minimizing the capacitive coupling between the outer-leg windings and the center-leg winding. This winding structure can be used in a wide range of magnetic structures including isolated and non-isolated CDRs, interleaved CDRs, and buck and boost converters.
