28 W/cm3 high power density three-port DC/DC converter cell for dual-voltage 12-V/48-V HEV subsystem

IEICE Electronics Express

Shuntaro Inoue¹  Masanori Ishigaki²  Kenichi Itoh³ 

[1] Electronics Engineering Dept. II, TOYOTA CENTRAL R&D LABS., INC.;System &

关键词: multiport circuit;    DC-DC power conversion;    GaN FET;    bridge circuit;    multi-cell;   

DOI  :  10.1587/elex.14.20170781

学科分类：电子、光学、磁材料

来源: Denshi Jouhou Tsuushin Gakkai

【 摘 要 】

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%.

【 授权许可】

CC BY