ItemArticle

High-efficiency stepdown/step-up converter for series-connected energy storage system

Title
High-efficiency stepdown/step-up converter for series-connected energy storage system
Creator
Suresh, K.; Parimalasundar, E.; Arunraja, A.; Ellappan, V.; Ware, Eshetu Tessema
Description
This work introduces a novel stepdown/step-up converter designed to optimize the run time of series-connected Battery, whose voltage drops progressively with increased usage, eventually falling below the necessary operating levels. The proposed converter automatically transitions between stepdown, step-up, and stepdown/step-up modes based on a comparison of input and output voltages, with the stepdown/step-up mode restricted to the narrowest range to minimize its lower efficiency in power conversion. It supports an input voltage range from 2.5 to 8V and incorporates a capacitive coupling level shift circuit to maintain the gate-source voltage of the power transistor under 5V, protecting against gate oxide layer damage. Fabricated with 180nm BCD technology, the converters compact size is 1.44mm by 0.73mm. Testing reveals that this converter achieves up to 93% power conversion efficiency, an 11% improvement over conventional models, and supports an output current up to 500mA, a 67% increase, enhancing the performance and longevity of Battery in compact electronic devices. The Author(s) 2025.
Source
Scientific Reports;Volume;15;Issue;1;Article No.;7726;
Date
01-01-2025
Publisher
Nature Research
Subject
Battery; High efficiency; Peak-current control; Stepdown/step-up converter; Wide-range
Coverage
Suresh K., Department of EEE, Christ University, Bangalore, India; Parimalasundar E., Department of EEE, Mohan Babu University, Tirupati, India; Arunraja A., Department of ECE, Christ University, Bangalore, India; Ellappan V., Department of ECE, Mahendra Institute of Technology, Namakkal, India; Ware E.T., School of ECE, Adama Science and Technology University, Adama, Ethiopia
Rights
All Open Access; Gold Open Access; Green Open Access
Relation
ISSN: 20452322;
Format
online
Language
English
Type
Article

Citation

Suresh, K.; Parimalasundar, E.; Arunraja, A.; Ellappan, V.; Ware, Eshetu Tessema, “High-efficiency stepdown/step-up converter for series-connected energy storage system,” CHRIST (Deemed To Be University) Institutional Repository, accessed June 18, 2026, https://archives.christuniversity.in/items/show/22535.

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