Switched-capacitor DC-DC boost converter of variable output voltage

摘要

This paper presents the numerical analysis of compact, efficient, switched capacitor (i.e., magnetic-less) DC-DC converter which can be operated as a boost regulator with the effect of variable duty cycle, having efficiency ranging from 78% to 89%. The simulated results show that the converter output voltage is two times of its input voltage approximately, which can be varied with change in duty cycle as per user's requirement. Use of reduced number of switching devices is the major advantage of proposed topology. Magnetic-less feature of converter provides the prospective of high temperature operation for the devices with high attainable efficiency.