Variable supply-voltage scheme with 95%-efficiency DC-DC converter for MPEG-4 codec
ISLPED '99 Proceedings of the 1999 international symposium on Low power electronics and design
Run-time voltage hopping for low-power real-time systems
Proceedings of the 37th Annual Design Automation Conference
Power and performance evaluation of globally asynchronous locally synchronous processors
ISCA '02 Proceedings of the 29th annual international symposium on Computer architecture
ASYNC '03 Proceedings of the 9th International Symposium on Asynchronous Circuits and Systems
Feedback EDF Scheduling Exploiting Dynamic Voltage Scaling
RTAS '04 Proceedings of the 10th IEEE Real-Time and Embedded Technology and Applications Symposium
Design and optimization of multithreshold CMOS (MTCMOS) circuits
IEEE Transactions on Computer-Aided Design of Integrated Circuits and Systems
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In systems-on-chip, dynamic voltage scaling allows energy savings. If only one global voltage is scaled down, the voltage cannot be lower than the voltage required by the most constrained functional unit to meet its timing constraints. Fine-grained dynamic voltage scaling allows better energy savings since each functional unit has its own independent clock and voltage, making the chip globally asynchronous and locally synchronous. In this paper we propose a local dynamic voltage scaling architecture, adapted to globally asynchronous and locally synchronous systems, based on a technique called Vdd-hopping. Compared to traditional power converters, the proposed power supply selector is small and power-efficient, with no needs for large passives or costly technological options. This design has been validated in a STMicroelectronics CMOS 65nm low-power technology.