High-efficiency, low noise, inductorless step-down DC/DC converter

摘要

A circuit and method for regulating a voltage by means of a switched capacitor circuit including multiple switches and capacitors. The circuit is operable in a plurality of modes that match the power transferred by the switched capacitors to the power drawn by a load. Advantageously, the circuit and method increase the efficiency of the regulator circuit over varying input voltage levels and output current levels. In addition, the circuit provides lower output ripple than conventional charge pumps.