Title :
Practical design considerations of current sharing control for parallel VRM applications
Author :
Qiu, Weihong ; Liang, Zhixiang
Author_Institution :
Seattle Design Center, Intersil Corp., Kent, WA
Abstract :
For high end sever applications, several voltage regulator modules (VRM) operate in parallel to provide high power for the multiple-processors system. Due to tight voltage tolerance requirement and fast dynamic load characteristics of processors, the proper design of current sharing circuit is very important for this application. In this paper, several application issues are discussed, and a simplified small signal model and simple design method are included
Keywords :
electric current control; microprocessor chips; voltage regulators; current sharing circuit; current sharing control; multiple-processors system; parallel VRM application; voltage regulator module; voltage tolerance; Circuits; Control systems; Impedance; Power system modeling; Process design; Proportional control; Pulse width modulation; Regulators; Transient response; Voltage control;
Conference_Titel :
Applied Power Electronics Conference and Exposition, 2005. APEC 2005. Twentieth Annual IEEE
Conference_Location :
Austin, TX
Print_ISBN :
0-7803-8975-1
DOI :
10.1109/APEC.2005.1452936
