PROJECT TITLE :

A Light-Load-Efficient 11/1 Switched-Capacitor DC-DC Converter With 94.7% Efficiency While Delivering 100 mW at 3.3 V

ABSTRACT:

This paper demonstrates a a pair of-phase eleven/one switched-capacitor (SC) DC-DC converter that gives an output voltage $V_OUT$ of three.3 V from an input voltage $V_IN$ in the vary of 37.4 V–39 V . SC converters, not like their inductive buck counterparts, do not depend on the heart beat-width modulation (PWM) duty cycle to line the voltage conversion ratio (VCR) as this is determined by the SC converter topology. Consequently, SC DC-DC converters don't need a terribly low duty cycle, ensuing during a short $t_on$ for the full-input-voltage-rated high-facet switch and significant driver power consumption. Instead, a two-phase SC converter is found to be an glorious candidate for top-ratio voltage conversion because it maintains a fifty% duty cycle and exchanges few parts of high voltage rating with more that are rated for lower voltage.