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Freddy Kurniawan
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Department of Electrical Engineering Institut Teknologi Dirgantara Adisutjipto, Jl. Janti, Blok R, Lanud Adisutjipto, Yogyakarta
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Aviation Electronics, Information Technology, Telecommunications, Electricals, and Controls (AVITEC)
Published by Institut Teknologi Dirgantara Adisutjipto
ISSN : 26852381     EISSN : 27152626     DOI : 10.28989/avitec
Core Subject : Science, Engineering,
Aerospace Engineering Computer Science & IT Electrical & Electronics Engineering Engineering
This journal is the scientific publications journal published by Department of Electrical Engineering, Sekolah Tinggi Teknologi Adisutjipto. It aims to promote and disseminate the research finding in the development of management theories and practices. It will provide a platform for academicians, researchers, and practitioners to share their experience and solution to problems in different areas of journal scopes. Every submitted paper will be blind-reviewed by peer-reviewers. Reviewing process will consider novelty, objectivity, method, scientific impact, conclusion, and references.
Arjuna Subject : Teknik (semua kategori) - Teknik Listrik dan Elektro
Articles 171 Documents
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Power-Loss and Efficiency Comparison of SiC C3M0075120D and GaN GS66508B in a DC–DC Buck Converter Adi Setiawan; Bambang Sudibya; R. Nur Akhmad Triwibowo; Okto Dinaryanto
Aviation Electronics, Information Technology, Telecommunications, Electricals, and Controls (AVITEC) Vol 8, No 2 (2026): August
Publisher : Institut Teknologi Dirgantara Adisutjipto

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.28989/avitec.v8i2.4206

Abstract

The growing demand for high-efficiency power conversion has accelerated adoption of wide-bandgap (WBG) devices in DC-DC converters. While SiC and GaN MOSFETs outperform conventional silicon, direct quantitative comparisons under identical buck-converter conditions remain an area of active investigation. This simulation-based study investigates power losses and estimated efficiency of SiC C3M0075120D (1200 V, 75 m ) and GaN GS66508B (650 V, 50 m ) in a 200 V-to-100 V, 50 kHz DC-DC buck converter under identical loads (5 A and 10 A). Using LTspice simulations with manufacturer-supplied models and Double Pulse Test methodology for loss separation, the study explicitly distinguishes switching and conduction losses under fixed operating conditions, providing validated simulation-based quantification for these specific devices. The results indicate that for the GaN device achieves lower modeled total losses than the SiC device at 10 A (6.85 W vs. 17.05 W) and attains higher simulated estimated converter efficiency (99.31% vs. 98.25% at full load). For the two specific devices and simulated operating conditions examined, switching loss remains the dominant loss mechanism at 50 kHz. A frequency sensitivity analysis from 50 to 500 kHz reveals that the GaN device maintains approximately 60% lower losses across the frequency range, with absolute savings increasing from 10.2 W to 91.2 W. These findings apply specifically to the investigated devices and operating conditions, and the comparison involves devices with different voltage ratings. The methodology demonstrates the utility of LTspice as a pre-prototyping tool for WBG converter development, although experimental validation remains necessary to confirm estimated efficiency figures.

Page 18 of 18 | Total Record : 171

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