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An Investigation of Operational Challenges in MHz Power Converters †.

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Title: An Investigation of Operational Challenges in MHz Power Converters †.
Authors: Hussain, Aqarib1 (AUTHOR) ahussain@email.sc.edu, Boland, Andrew1 (AUTHOR), Varner, Regan1 (AUTHOR), Matolak, David1 (AUTHOR), Booth, Kristen1 (AUTHOR)
Source: Energies (19961073). Feb2025, Vol. 18 Issue 4, p835. 12p.
Subjects: DC-to-DC converters, Passive components, Power density, Gallium nitride, Electromagnetic interference, Hardware
Abstract: Megahertz switching frequencies in converters significantly reduce the size of passive components, enabling high power density. However, these frequencies also introduce operational challenges, such as the semiconductor device reliability, thermal management, magnetic design and electromagnetic interference. This paper discusses a dc-dc converter operating at 1 MHz and its associated design challenges. The relationship between a GaN device on-resistance, junction temperature and losses in scenarios where the converter operates beyond its nominal design specifications is analyzed. Additionally, a PCB-based inductor is fully characterized and the parasitic effects of PCB traces are examined for a 1-MHz, 1-kW application. Finally, the conducted and radiated emissions of the converter are addressed, supported by simulation and hardware experimental measurements. [ABSTRACT FROM AUTHOR]
Copyright of Energies (19961073) is the property of MDPI and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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  Data: An Investigation of Operational Challenges in MHz Power Converters †.
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  Data: <searchLink fieldCode="DE" term="%22DC-to-DC+converters%22">DC-to-DC converters</searchLink><br /><searchLink fieldCode="DE" term="%22Passive+components%22">Passive components</searchLink><br /><searchLink fieldCode="DE" term="%22Power+density%22">Power density</searchLink><br /><searchLink fieldCode="DE" term="%22Gallium+nitride%22">Gallium nitride</searchLink><br /><searchLink fieldCode="DE" term="%22Electromagnetic+interference%22">Electromagnetic interference</searchLink><br /><searchLink fieldCode="DE" term="%22Hardware%22">Hardware</searchLink>
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  Data: Megahertz switching frequencies in converters significantly reduce the size of passive components, enabling high power density. However, these frequencies also introduce operational challenges, such as the semiconductor device reliability, thermal management, magnetic design and electromagnetic interference. This paper discusses a dc-dc converter operating at 1 MHz and its associated design challenges. The relationship between a GaN device on-resistance, junction temperature and losses in scenarios where the converter operates beyond its nominal design specifications is analyzed. Additionally, a PCB-based inductor is fully characterized and the parasitic effects of PCB traces are examined for a 1-MHz, 1-kW application. Finally, the conducted and radiated emissions of the converter are addressed, supported by simulation and hardware experimental measurements. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Energies (19961073) is the property of MDPI and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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        Text: English
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              Text: Feb2025
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