Series Capacitor Dual-output DC/DC Converter and Power Inverter with Reduced Switching Voltage and Stress on Switching Devices

Abstract

This paper presents seriescapacitordual inductorswitching power convertorthat features dual output capabilityand reduced VDD/2 switching voltage. Thedual output capabilityallowscircuit tobe configured as DC/DCpower converter with two distinct outputs, or aDC/ACpower inverter. The output voltage range is limited to VDD/2, and it is therefore suitable for applicationswith high downscale ratio. The structureis based on a series capacitortopologywhich features reduced VDD/2 switching voltage for bothchannelsand also reduced VDD/2 maximal ratings of switches and series capacitor. Thisreduces considerably the active area and dynamic (switching) power lossesof the converter. Structure also feauturespassive flying capacitor voltage balancing ensured by one reducedauxiliary capacitor

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