Masanao Okawa
Panasonic
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Publication
Featured researches published by Masanao Okawa.
ieee industry applications society annual meeting | 2002
Jinghai Zhou; Fengfeng Tao; Fred C. Lee; Naoki Onishi; Masanao Okawa
A high power density electronic ballast circuit for high intensity discharge (HID) lamp is proposed. Approaches to achieve high power density are studied. Topologically, the zero-voltage-switching quasi-square-wave concept is adopted when developing the high frequency high efficiency DC/DC front-end converter for the ballast based on the semiconductor loss analysis. On the other hand, a PCB level packaging method is proposed to deal with the thermal related issues, which further improves the power density of the system. A prototype is developed, with a maximum efficiency of 93.3% and the power density of 38.7 W/inch/sup 3/.
Archive | 2007
博史 ▲高▼木; Yoji Konishi; Minoru Maehara; Masanao Okawa; Hiroshi Takagi; Makoto Ukekawa; 稔 前原; 将直 大川; 洋史 小西; 信 請川
Archive | 2004
Fred C. Lee; Jinghai Zhou; Yan Jiang; Masanao Okawa; Dung A. Tran; Hiroyasu Eriguchi
Archive | 2009
Yoji Konishi; Masanao Okawa; 将直 大川; 洋史 小西
Archive | 2010
Katsunobu Hamamoto; Hiroshi Kido; Yoji Konishi; Masanori Mishima; Masanao Okawa; Shohei Yamamoto; 正徳 三嶋; 大志 城戸; 将直 大川; 洋史 小西; 正平 山本; 勝信 濱本
Archive | 2010
Masanao Okawa; Hirofumi Konishi; Takeo Miyai; Hideharu Kawachi; Koki Fujihara
Archive | 2010
Masanao Okawa; Hirofumi Konishi; Shohei Yamamoto; Kentaro Yamauchi
Archive | 2004
Masanao Okawa; Hiroyasu Eriguchi
Archive | 2010
Katsunobu Hamamoto; Hiroshi Kido; Yoji Konishi; Masanori Mishima; Masanao Okawa; Shohei Yamamoto; 正徳 三嶋; 大志 城戸; 将直 大川; 洋史 小西; 正平 山本; 勝信 濱本
Archive | 2012
Yohei Hayashi; Hirofumi Konishi; Masanori Mishima; Masanao Okawa
