IEICE Electronics Express
Online ISSN : 1349-2543
ISSN-L : 1349-2543
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28 W/cm3 high power density three-port DC/DC converter cell for dual-voltage 12-V/48-V HEV subsystem
Kenichi ItohShuntaro InoueMasanori Ishigaki
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2017 Volume 14 Issue 19 Pages 20170781

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Abstract

Realizing both of compact and low energy consumption is technical issue on development of electricity-rich automotive subsystems. In the present work, a 12-V/48-V dual-voltage subsystem using three-port DC/DC converter cells is proposed, and the high power density cell design is studied to achieve ultra-compact subsystem in hybrid-electric-vehicle. A 500 W, 400 kHz prototype is developed with GaN FETs, and its efficiencies are evaluated. The prototype achieves power density of 28 W/cm3 at rated power, and its efficiency is measured more than 91% over a wide output power range, with a maximum efficiency of 93.7%.

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© 2017 by The Institute of Electronics, Information and Communication Engineers
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