Title :
Design of high-input voltage regulator modules with a novel integrated magnetics
Author :
Xu, Peng ; Lee, Fred C.
Author_Institution :
Bradley Dept. of Electr. Eng., Virginia Polytech. Inst. & State Univ., Blacksburg, VA, USA
Abstract :
A novel integrated magnetic structure was proposed to improve the performance of high-input voltage regulator modules (VRMs) by significantly reducing the leakage inductance of magnetics. Another benefits of using the proposed structure include reduced core loss, simplified manufacture process and reduction of the primary current ripple. As a result, the size and cost of VRMs could be reduced greatly. The concept was demonstrated on a push-pull forward VRM, which delivers power from a 48-V input to a 1.2-1.5 V/70 A microprocessor load
Keywords :
DC-DC power convertors; computer power supplies; harmonic distortion; load (electric); magnetic leakage; microprocessor chips; power conversion harmonics; power transformers; voltage regulators; 1.2 to 1.5 V; 48 V; 70 A; DC/DC power conversion; core loss; high-input voltage regulator module design; integrated magnetic structure; integrated magnetics; leakage inductance reduction; manufacture process; microprocessor load; primary current ripple reduction; push-pull forward VRM; Circuit topology; Inductance; Inductors; Magnetics; Microprocessors; Power conversion; Rectifiers; Regulators; Transient response; Voltage;
Conference_Titel :
Applied Power Electronics Conference and Exposition, 2001. APEC 2001. Sixteenth Annual IEEE
Conference_Location :
Anaheim, CA
Print_ISBN :
0-7803-6618-2
DOI :
10.1109/APEC.2001.911658
