Design study for ultraflat PCB-integrated inductors for low-power conversion applications

The impact of different geometrical parameters on the performance of printed circuit board (PCB) integrated inductors with electroplated magnetic cores is investigated in this paper. The parameters of winding and core structures are limited only by PCB design rules for this novel type of integrated magnetic component. The performance of the resulting structures are compared in terms of achievable inductance, flux confinement in the core, and power handling. Initial design recommendations are presented for different power applications.