DocumentCode :
626672
Title :
94% Performance improvement by time-shift control (TSC) technique in cloud computing voltage regulator module (VRM)
Author :
Che-Hao Meng ; Yi-Ping Su ; Yu-Ping Huang ; Yu-Huei Lee ; Ke-Horng Chen
Author_Institution :
Inst. of Electr. Control Eng., Nat. Chiao Tung Univ., Hsinchu, Taiwan
fYear :
2013
fDate :
19-23 May 2013
Firstpage :
909
Lastpage :
912
Abstract :
The time-shift control (TSC) technique for voltage regulator module (VRM) is proposed to achieve high performance power supply for servers in cloud computing. Four power stages are adopted to provide high current driving capability and low output ripple. Besides, the power request, which includes the number of active phases and voltage identification (VID), is acknowledged by servers for high driving capability during high throughput and high efficiency during standby mode. Furthermore, to equally distribute the current in each phase, the proposed TSC technique improves the current balance performance and solves the stability problem. In the scale-down clouding computing prototype, the efficiency can be kept higher than 90% over a wide load current range of 2 A. Besides, the performance and operating frequency of the servers in stable operation are not limited by the VRM with the TSC.
Keywords :
cloud computing; network servers; performance evaluation; power aware computing; telecommunication power management; voltage regulators; TSC technique; VID; VRM; cloud computing voltage regulator module; driving capability; high performance power supply; operating frequency; scale-down clouding computing prototype; stability problem; time-shift control technique; voltage identification; Circuit stability; Clocks; Cloud computing; Feedback loop; Power demand; Servers; Voltage control;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Circuits and Systems (ISCAS), 2013 IEEE International Symposium on
Conference_Location :
Beijing
ISSN :
0271-4302
Print_ISBN :
978-1-4673-5760-9
Type :
conf
DOI :
10.1109/ISCAS.2013.6571995
Filename :
6571995
Link To Document :
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