Open AccessStability analysis and experimental validation of the supercapacitor‐assisted low‐dropout regulator
Author(s) -
Subasinghage Kasun,
Gunawardane Kosala,
Kularatihal
Publication year - 2020
Publication title -
iet power electronics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.637
H-Index - 77
eISSN - 1755-4543
pISSN - 1755-4535
DOI - 10.1049/iet-pel.2019.1601
Subject(s) - low dropout regulator , regulator , voltage regulator , supercapacitor , control theory (sociology) , dropout voltage , linear regulator , dropout (neural networks) , stability (learning theory) , lossless compression , converters , computer science , engineering , voltage , capacitance , chemistry , electrical engineering , algorithm , artificial intelligence , control (management) , biochemistry , electrode , machine learning , data compression , gene
The supercapacitor‐assisted low‐dropout (SCALDO) regulator is a unique new design approach to develop high efficiency, high current and low noise DC–DC converters, where a supercapacitor (SC) is used in the series path of a low dropout (LDO) regulator to act as a lossless voltage dropper. In the published literature, there has been much discussion about the stability of an LDO regulator, where different approaches are applied to frequency compensate depending on the LDO architecture. Given the case that the SCALDO technique is a combination of an LDO regulator and an SC, this study presents an analysis and experimental validation of the stability, based on a 12–5 V SCALDO prototype, proving that the effect of the SC energy recovery method does not make the overall regulator carry a stability issue in general.