A Comparative Evaluation of an Un-regulated and a Regulated Input Isolated DC-DC Converter using WBG devices

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Abstrakt

Power supply systems for low voltage, high current applications often have a front-end ac-dc converter followed by an un-regulated input or a regulated input isolated dc-dc converter. This paper illustrates the design, analysis and comparison of an un-regulated and a regulated input isolated dc-dc converter utilizing wide band-gap (WBG) devices. For the comparison and evaluation, SiC devices are used at the primary side and GaN devices at the secondary side of the converter. Due to the high voltage ( 650 V) requirement at the input side of the dc-dc converter, SiC MOSFETs are selected instead of GaN devices. The analysis reveals that for higher switch efficiency and smaller chip area, it is better to have a regulated input, isolated dc-dc converter. This paper also demonstrates that, by the usage of a regulated input isolated dc-dc converter half the switching power device chip area can be saved compared to an unregulated input dc-dc converter, thereby the cost of the converter can be reduced drastically.

OriginalsprogEngelsk
Titel2018 20th European Conference on Power Electronics and Applications : EPE'18 ECCE Europe
Antal sider9
ForlagIEEE Press
Publikationsdato30. okt. 2018
ISBN (Trykt)978-1-5386-4145-3
ISBN (Elektronisk)978-9-0758-1528-3
StatusUdgivet - 30. okt. 2018
Begivenhed20th European Conference on Power Electronics and Applications - Kipsala Convention Center, Riga, Letland
Varighed: 17. sep. 201821. sep. 2018
http://www.epe2018.com/

Konference

Konference20th European Conference on Power Electronics and Applications
LokationKipsala Convention Center
LandLetland
ByRiga
Periode17/09/201821/09/2018
Internetadresse

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Citationsformater

Ramachandran, R., & Nymand, M. (2018). A Comparative Evaluation of an Un-regulated and a Regulated Input Isolated DC-DC Converter using WBG devices. I 2018 20th European Conference on Power Electronics and Applications: EPE'18 ECCE Europe IEEE Press.