Hybrid magnetics and power applications

Abstract

A hybrid magnetic approach, merging two different magnetic core properties such as ferrite and iron powder cores, is an effective solution for power converter applications. It can offer similar magnetic properties to that of magnetic powder cores but showing less copper loss than powder cores. In order to prevent ferrite core saturation, placing an effective air gap within the ferrite core is a key method to obtain optimum hybrid magnetic performance. Furthermore, a relatively large inductance at low loading current is an excellent way to minimize power loss in order to achieve high efficiency operation and energy saving.