Which method involves adjusting supply voltage for improved power efficiency?

Dynamic Voltage Scaling (DVS) is a method used in CPs (Cyber-Physical Systems) that involves adjusting the supply voltage dynamically based on workload requirements and operational conditions. The primary goal of DVS is to enhance power efficiency, which can be critical in resource-constrained environments such as mobile devices or embedded systems.

By lowering the voltage during periods of low demand or reduced activity, DVS significantly decreases power consumption, as the power drawn by a circuit is proportional to the square of the voltage. Conversely, when demand increases, the system can increase the voltage to maintain performance. This real-time adjustment not only optimizes energy use but also helps in managing heat generation, which is an important component of overall system reliability and longevity.

In this context, using DVS is ideal for tasks that do not require constant performance levels, enabling the system to conserve energy without compromising functionality when it is not necessary to operate at full power. This makes the approach especially beneficial in battery-powered applications, where extending battery life is crucial.

While other methods like Static Voltage Scaling and Voltage Regulation can also play a role in power management, they do not adapt to changing workload conditions in the same dynamic manner, which limits their potential for improving power efficiency as effectively as Dynamic Voltage