Design and Layout of DC-DC Buck Converter

Shreya Anvekar, Sujata Kotabagi, Goutam Giriraddi, Anusha A D, Bhargav Hegde

2025

Abstract

Integrated power management circuits play a pivotal role in portable electronic applications, where high efficiency, compact form factors, and robust transient response are critical requirements. These circuits, often realized as DC-DC converters are indispensable in managing power distribution effectively within a system while minimizing energy losses. The focus is placed on achieving precise voltage regulation and minimizing ripple content to ensure stable operation under varying load conditions. This paper details the design, simulation, and implementation of a voltage control mode DC-DC buck converter, specifically tailored to achieve high efficiency and reliable operation. The proposed design is demonstrated through the development of a 4 MHz prototype fabricated using 180 nm CMOS technology. The prototype effectively regulates an output voltage while sourcing a maximum load current of 100 mA from a 1.8 V input supply, catering to the demands of low-power portable applications. The circuit architecture incorporates critical components, including an error amplifier, comparator, and compensator, to establish a robust feedback stabilization mechanism. A Type-II compensator is employed to enhance the system’s phase margin and ensure stable operation across a wide range of operating conditions. The design process is supported by extensive simulation-based validation to optimize the system’s dynamic response and steadystate performance. Experimental measurements, conducted with external filter components (inductor L=6.8H, capacitor C=10 H, reveal favourable performance characteristics. The results highlight the converter’s ability to maintain a well-regulated output voltage while exhibiting minimal ripple and rapid transient response to load changes.

Paper Citation

in Harvard Style

Anvekar S., Kotabagi S., Giriraddi G., A D A. and Hegde B. (2025). Design and Layout of DC-DC Buck Converter. In Proceedings of the 3rd International Conference on Futuristic Technology - Volume 2: INCOFT; ISBN 978-989-758-763-4, SciTePress, pages 762-768. DOI: 10.5220/0013601900004664

in Bibtex Style

@conference{incoft25,
author={Shreya Anvekar and Sujata Kotabagi and Goutam Giriraddi and Anusha A D and Bhargav Hegde},
title={Design and Layout of DC-DC Buck Converter},
booktitle={Proceedings of the 3rd International Conference on Futuristic Technology - Volume 2: INCOFT},
year={2025},
pages={762-768},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0013601900004664},
isbn={978-989-758-763-4},
}

in EndNote Style

TY - CONF

JO - Proceedings of the 3rd International Conference on Futuristic Technology - Volume 2: INCOFT
TI - Design and Layout of DC-DC Buck Converter
SN - 978-989-758-763-4
AU - Anvekar S.
AU - Kotabagi S.
AU - Giriraddi G.
AU - A D A.
AU - Hegde B.
PY - 2025
SP - 762
EP - 768
DO - 10.5220/0013601900004664
PB - SciTePress