A High-Bandwidth GaN-Based Discrete Synchronous Capacitive dv/dt Sensor with Enhanced Gain for Megahertz Power Converters

A High-Bandwidth GaN-Based Discrete Synchronous Capacitive dv/dt Sensor with Enhanced Gain for Megahertz Power Converters | Authorea try { document.documentElement.classList.add('js'); } catch (e) { } var _gaq = _gaq || []; _gaq.push(['_setAccount', 'G-8VDV14Y67G']); _gaq.push(['_trackPageview']); (function() { var ga = document.createElement('script'); ga.type = 'text/javascript'; ga.async = true; ga.src = ('https:' == document.location.protocol ? 'https://ssl' : 'http://www') + '.google-analytics.com/ga.js'; var s = document.getElementsByTagName('script')[0]; s.parentNode.insertBefore(ga, s); })(); Skip to main content Preprints Collections Wiley Open Research IET Open Research Ecological Society of Japan All Collections About About Authorea FAQs Contact Us Quick Search anywhere Search for preprint articles, keywords, etc. Search Search ADVANCED SEARCH SCROLL This is a preprint and has not been peer reviewed. Data may be preliminary. 24 November 2025 V2 Latest version Share on A High-Bandwidth GaN-Based Discrete Synchronous Capacitive dv/dt Sensor with Enhanced Gain for Megahertz Power Converters Authors : Bright K. Banzie 0000-0003-0883-6788 [email protected] , Francis B. Effah , and John K. Annan 0000-0001-8056-7880 Authors Info & Affiliations https://doi.org/10.22541/au.173868323.34313168/v2 267 views 93 downloads Contents Abstract Supplementary Material Information & Authors Metrics & Citations View Options References Figures Tables Media Share Abstract In high-frequency (HF) power converters, precise dv/dt control is critical for ensuring system stability, efficiency, and electromagnetic compatibility. Conventional discrete capacitor-based closed-loop dv/dt sensors often face challenges related to limited gain, bandwidth, and reliability, particularly when controlling devices with low reverse transfer capacitance ( C RSS ). This paper proposes a discrete synchronous capacitive dv/dt sensor (syncFET dv/dt sensor) that enhances closed-loop dv/dt control performance in megahertz (MHz) power converter applications by integrating a syncFET with an active gate driver (AGD), leveraging GaN technology to improve feedback gain without the design complexities of integrated circuits. Experimental validation using a 10 MHz, 24 V buck converter demonstrates a reduction in the turn-on dv/dt of the low-side switch from -15 V/ns to -10 V/ns with a 0.1 pF sensor capacitor, achieving nanosecond-level response times for reliable dv/dt regulation during switching transients. Additionally, PSpice simulations confirm the syncFET dv/dt sensor’s capability to generate stronger feedback currents, and when coupled with the AGD, reduce the gate current for dv/dt control while maintaining system stability. By harnessing GaN technology, the proposed sensor supports the high switching frequency requirements of MHz power converters, improving both efficiency and control reliability. Supplementary Material File (manuscript_v1.docx) Download 5.35 MB Information & Authors Information Version history V1 Version 1 04 February 2025 V2 Version 2 24 November 2025 Copyright This work is licensed under a Non Exclusive No Reuse License. Keywords active gate driver dv/dt control gan high-frequency power converters megahertz frequency synchronous capacitive dv/dt sensor Authors Affiliations Bright K. Banzie 0000-0003-0883-6788 [email protected] University of Mines and Technology View all articles by this author Francis B. Effah Kwame Nkrumah University of Science and Technology View all articles by this author John K. Annan 0000-0001-8056-7880 University of Mines and Technology View all articles by this author Metrics & Citations Metrics Article Usage 267 views 93 downloads .FvxKWukQNSOunydq8rnd { width: 100px; } Citations Download citation Bright K. Banzie, Francis B. Effah, John K. Annan. A High-Bandwidth GaN-Based Discrete Synchronous Capacitive dv/dt Sensor with Enhanced Gain for Megahertz Power Converters. Authorea . 24 November 2025. DOI: https://doi.org/10.22541/au.173868323.34313168/v2 If you have the appropriate software installed, you can download article citation data to the citation manager of your choice. Simply select your manager software from the list below and click Download. For more information or tips please see 'Downloading to a citation manager' in the Help menu . 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