Dynamically scaling apparatus for a system on chip power voltage

摘要

A system for dynamically scaling a power voltage including a system on chip (SoC) and a power control circuit. The SoC includes a plurality of application circuits. The SoC is configured to generate internal clock signals in response to an externally supplied clock signal. The SoC also generates a target voltage that changes based on a change of an operating current. The internal clock signals are respectively provided to the application circuits. The operating current is a sum or total current of the application circuits. The power control circuit generates an internal power voltage based on the target voltage and provides the internal power voltage to the SoC. The system for dynamically scaling a power voltage including a SoC may decrease power consumed in the SoC because the system of dynamically scaling a power voltage decreases a required voltage margin by changing a target voltage before a transition of the SoC current.