Storage devices for power optimization, storage systems including the same, and operating methods thereof

Abstract

A storage device which includes a non-volatile memory, a storage controller that is connected with the non-volatile memory and is configured to calculate a real-time power value of the storage device through at least one current value and at least one voltage value received from an ADC module, and to generate a clock control signal based on the real-time power value. The ADC module may be connected with at least one line that supplies a power to the storage device, and the ADC module may measure the at least one current value and the at least one voltage value. The storage device may include a clock adjustment unit that adjusts a plurality of clock signals used to drive the storage controller based on the clock control signal and sends the plurality of clock signals to the storage controller.