DocumentCode :
2915244
Title :
A new voltage regulator module with integrating coupled magnetic
Author :
Liu Xue Chao ; Bo, Zhang ; Liang, Zhao ; Jin, Hu
Author_Institution :
ASTEC Power Supply Lab. of Electr. Power Coll., South China Univ. of Technol., Guangzhou, China
fYear :
2005
fDate :
6-10 Nov. 2005
Abstract :
Multiphase interleaving synchronous buck converter is widely adopted for voltage regulator module (VRM), which requires strictly steady and dynamic performances to power microprocessor. In this paper, a new non-isolated multiphase VRM with integrating coupled magnetic is introduced to improve steady and dynamic performances. Firstly, a integrating coupled magnetic is modelled by gyrator-capacitor approach. Then all these magnetic components can be coupled into one single ferrite core shape to reduce the magnetic size. By proper designing the air gap and coupling coefficient of integrating coupled-inductor, this new technique can greatly improve the performances of VRM with faster transient response and lower output ripple current. The Matlab simulation and 1.5 V/40 A prototype experimental results of two-phase VRM show that integrating coupled inductor can improve steady and dynamic performances.
Keywords :
capacitors; computer power supplies; ferrites; gyrators; magnetic cores; mathematics computing; power convertors; transient response; voltage regulators; 1.5 V; 40 A; Matlab simulation; air gap; coupled-inductor; coupling coefficient; dynamic performance; gyrator-capacitor approach; magnetic components; microprocessor; multiphase interleaving synchronous buck converter; single ferrite core shape; steady performance; transient response; voltage regulator; Buck converters; Couplings; Ferrites; Interleaved codes; Magnetic cores; Mathematical model; Microprocessors; Regulators; Shape; Voltage;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Industrial Electronics Society, 2005. IECON 2005. 31st Annual Conference of IEEE
Print_ISBN :
0-7803-9252-3
Type :
conf
DOI :
10.1109/IECON.2005.1569091
Filename :
1569091
Link To Document :
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