ABSTRACT
During the development of a low-power digital system, the attention of designers is focused on the minimization of the power dissipated by the circuits and interfaces that perform computations, storage, and data transfer/communication. Accurate and efficient power models for digital circuits at various levels of abstraction have been developed to support design space exploration [1]. Unfortunately, much less attention has been dedicated to power supply models. In many cases, it is implicitly assumed that the power supply provides a constant voltage and delivers a fixed amount of energy. This assumption is not valid in the case of battery-operated devices.
