Design issues for dynamic voltage scaling
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TL;DR
Dynamic Voltage Scaling is a method to vary the processor's supply voltage so that it consumes the minimal amount of energy by operating at the minimum performance level required by the active software processes.
Abstract
Processors in portable electronic devices generally have a computational load which has time-varying performance requirements. Dynamic Voltage Scaling is a method to vary the processors supply voltage so that it consumes the minimal amount of energy by operating at the minimum performance level required by the active software processes. A dynamically varying supply voltage has implications on the processor circuit design and design flow, but with some minimal constraints it is straightforward to design a processor with this capability.