Title :
Single magnetic push-pull forward converter featuring built-in input filter and coupled-inductor current doubler for 48 V VRM
Author :
Xu, Peng ; Ye, Mao ; Lee, Fred C.
Author_Institution :
Bradley Dept. of Electr. & Comput. Eng., Virginia Polytech. Inst. & State Univ., Blacksburg, VA, USA
Abstract :
This paper proposes an improved push-pull forward converter with a single EI or EE core for all the magnetic components including the input inductor, the stepdown transformer and the output inductors. This topology is essentially the modified push-pull converter with the built-in input filter and the coupled-inductor current doubler rectifier. The proposed integrated magnetics features minimized leakage inductance and an air gap in only the center leg; its winding and core losses are both lower than those of conventional integrated magnetic structures
Keywords :
DC-DC power convertors; air gaps; inductance; inductors; magnetic leakage; transformers; voltage control; voltage regulators; 48 V; EE core; EI core; air gap; built-in input filter; core losses; coupled-inductor current doubler; coupled-inductor current doubler rectifier; input inductor; integrated magnetics; magnetic components; minimized leakage inductance; modified push-pull converter; output inductors; single magnetic push-pull forward converter; stepdown transformer; winding losses; Core loss; Filters; Inductance; Inductors; Leg; Magnetic cores; Magnetic separation; Rectifiers; Topology; Transformer cores;
Conference_Titel :
Applied Power Electronics Conference and Exposition, 2002. APEC 2002. Seventeenth Annual IEEE
Conference_Location :
Dallas, TX
Print_ISBN :
0-7803-7404-5
DOI :
10.1109/APEC.2002.989342
