Naoki Maru
Hitachi
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Publication
Featured researches published by Naoki Maru.
Power Electronics Conference (IPEC-Hiroshima 2014 - ECCE-ASIA), 2014 International | 2014
Kaoru Katoh; Katsumi Ishikawa; Ayumu Hatanaka; Kazutoshi Ogawa; Satoru Akiyama; Takashi Ogawa; Natsuki Yokoyama; Naoki Maru; Koji Nishisu
We investigated how to reduce the energy loss of server power supplies equipped with vertical-trench normally-off Silicon Carbide junction-gate field-effect transistors (SiC-JFETs). High-speed driving circuits consisting of a speed-up capacitor with separated source terminal and timing adjust circuits to ensure a dead time margin are proposed. Applying the developed normally-off SiC-JFETs and the proposed gate driver to PFC circuits and DC/AC circuits resulted in, an increase of server power supply efficiency to 95.10%.
Archive | 2005
Naoki Maru; Hideho Yamamura; Koji Nisisu; Shigeo Oomae
Archive | 2009
Hideho Yamamura; Naoki Maru; Kazunori Nakajima; Koji Nisisu; Shigeo Oomae
Archive | 1996
Hideho Yamamura; Masakazu Yamamoto; Naoki Maru; Satoshi Muraoka
Archive | 2001
Naoki Maru; Akihiro Sakurai; Hiroshi Kamee
Archive | 2002
Hideho Yamamura; Naoki Maru
Archive | 2001
Hideho Yamamura; Mamoru Ogihara; Naoki Maru
Archive | 2012
Hideho Yamamura; Shigeo Oomae; Koji Nisisu; Naoki Maru
Archive | 2004
Hideho Yamamura; Naoki Maru; Satoshi Tomioka; Motoharu Ueguri
Archive | 2001
Naoki Maru; Hideo Yamamura; 直樹 丸; 英穂 山村
