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Featured researches published by Shun Kazama.


Materials Science Forum | 2008

Normally-Off 1400V/30A 4H-SiC DACFET and its Application to DC-DC Converter

Makoto Kitabatake; Masaki Tagome; Shun Kazama; Kenya Yamashita; Koichi Hashimoto; Kunimasa Takahashi; Osamu Kusumoto; Kazuya Utsunomiya; Masashi Hayashi; Masao Uchida; R. Ikegami; Chiaki Kudo; Shin Hashimoto

Large (3.6 x 3.6 mm2) chips of the SiC DACFET were fabricated and mounted in TO220 packages. The drain-source avalanche breakdown voltage without any gate bias (Vgs=0V) is measured to be >1400V. The SiC DACFET keeps the normally-off characteristics even at 150°C. Ron and specific Ron of the SiC DACFET is measured to be 62mΩ and 6.7 mΩcm2 at RT while those at 150°C change to 107 mΩ and 11.6 mΩcm2. The 400V / 3 kW DC-DC switched-mode power-conversion circuit with 100kHz switching was fabricated using the SiC DACFET and the SiC SBD. The turn-off switching loss reduces dramatically using the SiC-DACFET down to 77μJ/pulse which is less than 1/10 of that using the Si-IGBT.


Archive | 2009

Synchronous motor drive system

Noriyoshi Nishiyama; Masaki Tagome; Yasuhiro Kondo; Makoto Kitabatake; Shun Kazama


Archive | 2010

SEMICONDUCTOR ELEMENT, SEMICONDUCTOR DEVICE, AND POWER CONVERTER

Kazuhiro Adachi; Osamu Kusumoto; Masao Uchida; Koichi Hashimoto; Shun Kazama


Archive | 2010

SEMICONDUCTOR ELEMENT, SEMICONDUCTOR DEVICE, AND ELECTRIC POWER CONVERTER

Koichi Hashimoto; Kazuhiro Adachi; Osamu Kusumoto; Masao Uchida; Shun Kazama


Archive | 2010

Load drive system, motor drive system, and vehicle control system

Shun Kazama; Makoto Kitabatake; Masaki Tagome


Archive | 2011

Power conversion apparatus and control method for power conversion apparatus

Shun Kazama


Archive | 2009

SYNCHRONOUS ELECTRIC MOTOR

Noriyoshi Nishiyama; Masaki Tagome; Yasuhiro Kondo; Makoto Kitabatake; Shun Kazama


Archive | 2014

DRIVING APPARATUS AND ELECTRIC POWER CONVERTER

Fumito Kusama; Hajime Hida; Shun Kazama; Kenji Hanamura


Archive | 2010

ELECTRIC POWER CONVERTING APPARATUS AND INDUCTION HEATING APPARATUS

Shun Kazama; Masaki Tagome; Makoto Kitabatake


Archive | 2009

Power conversion circuit having off-voltage control circuit

Masaki Tagome; Makoto Kitabatake; Shun Kazama

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