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Energy Storage Devices for Electronic Systems by Nihal Kularatna

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6

Supercapacitor as a lossless dropper in DC-DC converters

Kosala Gunawardane

Abstract

A low ESR supercapacitor could be easily used as a lossless voltage dropper in applications like linear voltage regulators to significantly enhance the end to end efficiency of the converter. Useful examples of 12-5 V, 5-3.3V and 5-1.5 V linear converters with extra low frequency based energy circulation with single supercapacitor or supercapacitor arrays are discussed with experimental details. Technique is called supercapacitor assisted low dropout (SCALDO) regulator.

Keywords

linear regulators

LDOs

efficiency

SCALDO

end to end efficiency (ETEE)

6.1 Introduction

Supercapacitors are typically used as energy storage devices (ESD) and such applications ...

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