Design of a buck converter for stable voltage output in nanosatellite applications

Ahmad, Yasser Asrul and Tuan Kamazon, Tuan Muhammad Aidiel and Razaman, Anis Hannani and Saidin, Norazlina and Khalifa, Othman Omran (2025) Design of a buck converter for stable voltage output in nanosatellite applications. Defense S&T Technical Bulletin, 18 (2). pp. 92-109. E-ISSN 3009-1896

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Abstract

In a nanosatellite or CubeSat operation, the size, weight and power efficiency of the satellite are critical. Traditional linear regulators, being inefficient and prone to excessive heat generation, are unsuitable for these applications. This project designed a buck converter to address these issues by efficiently reducing voltage and minimising power losses. The process included a comprehensive literature review, parameter determination, circuit design, and implementation on a printed circuit board (PCB) using KiCad. This project successfully achieved the design of a buck converter that steps down a +28 V input to a +5 V output and is capable of supplying current of up to 3 A to the load. Simulation results facilitated optimisation, leading to a highly efficient and stable buck converter suitable for CubeSat power regulation, thereby advancing robust power solutions for space missions.

Item Type:	Article (Journal)
Uncontrolled Keywords:	Buck converter; voltage regulation; CubeSat; DC-DC conversion; KiCad.
Subjects:	T Technology > TK Electrical engineering. Electronics Nuclear engineering T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK2896 Production of electricity by direct energy conversion T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK3001 Distribution or transmission of electric power. The electric power circuit T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK4001 Applications of electric power T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK452 Electric apparatus and materials. Electric circuits. Electric networks T Technology > TL Motor vehicles. Aeronautics. Astronautics > TL787 Astronautics U Military Science > U Military Science (General)
Kulliyyahs/Centres/Divisions/Institutes (Can select more than one option. Press CONTROL button):	Kulliyyah of Engineering > Department of Electrical and Computer Engineering
Depositing User:	Dr Ir Yasser Asrul Ahmad
Date Deposited:	24 Dec 2025 10:00
Last Modified:	24 Dec 2025 10:00
Queue Number:	2025-12-Q879
URI:	http://irep.iium.edu.my/id/eprint/125772

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