Charge pump system and operation method thereof

Abstract

A charge pump system and method of operating the same are provided. The charge pump system includes a charge pump circuit configured to convert an input voltage to an output voltage; a comparator configured to compare the output voltage with a reference voltage, and output a control signal that corresponds to a result of the comparing; a driver configured to generate the input voltage in response to an operation clock signal, and provide the generated input voltage to the charge pump circuit; and a selector configured to provide one of a first clock signal of a first frequency and a second clock signal of a second frequency lower than the first frequency as the operation clock signal to the driver, based on the control signal.

Dependencies are inferred from the claim text.