Title :
SuperRange: Wide operational range power delivery design for both STV and NTV computing
Author :
Xin He ; Guihai Yan ; Yinhe Han ; Xiaowei Li
Author_Institution :
State Key Lab. of Comput. Archit., Inst. of Comput. Technol., Beijing, China
Abstract :
The load power range of modern processors is greatly enlarged because many advanced power management techniques like dynamic voltage frequency scaling, Turbo boosting, and Near Threshold Voltage technologies are incorporated. However, the power saving may be offset by power loss in power delivery; moreover, as the efficiency of power delivery varies greatly with different load conditions, conventional power delivery designs cannot maintain high efficiency over the entire voltage range. We propose SuperRange, a wide operational range power delivery scheme. SuperRange complements the power delivery capability of on-chip voltage regulator and off-chip voltage regulator. Experimental results show SuperRange has an average 70% power conversion efficiency over wide operational range which outperforms conventional power delivery schemes. And it also exhibits superior resilience to power-constrained systems.
Keywords :
low-power electronics; power aware computing; voltage regulators; NTV computing; STV computing; SuperRange; dynamic voltage frequency scaling; load power range; near threshold voltage technologies; off-chip voltage regulator; on-chip voltage regulator; power loss; power management techniques; power-constrained systems; turbo boosting; wide operational range power delivery design; Capacitors; Inductors; Program processors; Regulators; Switches; System-on-chip; Voltage control;
Conference_Titel :
Design, Automation and Test in Europe Conference and Exhibition (DATE), 2014
Conference_Location :
Dresden
DOI :
10.7873/DATE.2014.159
