Pcb winding transformer

Abstract

The present disclosure discloses a PCB winding transformer. The PCB winding transformer includes a magnetic core and a coil board with a multilayer structure. The coil board includes a primary coil and a secondary coil wound around a magnetic core column of the magnetic core. The secondary coil is located in a first layer and a last layer, and the primary coil is located in intermediate layers. The number of turns of the secondary coil is less than that of the primary coil. At least one via hole for connecting the first layer and the last layer of the secondary coil is disposed in the coil board between an inner side of the primary coil and the magnetic core column.

Dependencies are inferred from the claim text.