Zobrazeno 1 - 10
of 11
pro vyhledávání: '"Masashi Akahane"'
Autor:
Hidetomo Ohashi, Masaharu Yamaji, Hitoshi Sumida, Masashi Akahane, Takahide Tanaka, Akihiro Jonishi, Sasaki Masahiro
Publikováno v:
2018 International Power Electronics Conference (IPEC-Niigata 2018 -ECCE Asia).
For LLC current resonant power supply a 600 V-class high voltage gate driver IC (HVIC) with a high operating frequency of 1.0MHz has been developed for the first time. A difficult point of this development was to suppress increases in chip temperatur
Autor:
Hitoshi Sumida, Yoshiaki Toyoda, Xiangming Fang, Johnny K. O. Sin, Rongxiang Wu, Lulu Peng, Masashi Akahane, Masaharu Yamaji
Publikováno v:
ECS Journal of Solid State Science and Technology. 3:Q207-Q211
In this paper, 3D TSV transformers are designed and fabricated for monolithic high-voltage digital isolator applications. The transformersareembeddedinthebottomlayerofasiliconsubstratebyusingthrough-silicon-via(TSV)techniquewithoutconsuming chip surf
Autor:
Junya Yamakawa, Masashi Akahane
Publikováno v:
TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series C. 79:4187-4197
Autor:
Hitoshi Sumida, Takahide Tanaka, Masashi Akahane, Akihiro Jonishi, Noriyuki Tochinai, Masaharu Yamaji, Hiroshi Kanno
Publikováno v:
2015 IEEE 27th International Symposium on Power Semiconductor Devices & IC's (ISPSD).
A new technology concept of HVICs which realizes high negative surge immunity has been proposed for junction-isolation (JI) or self-isolation (SI) processes. The basic concept is to isolate a substrate from the ground level to block the surge current
Autor:
Masaharu Yamaji, Rongxiang Wu, Xiangming Fang, Lulu Peng, Masashi Akahane, Johnny K. O. Sin, Yoshiaki Toyoda, Hitoshi Sumida
Publikováno v:
ECS Solid State Letters. 2:Q29-Q31
Autor:
Masaharu Yamaji, Tomita Wataru, Hitoshi Sumida, Akihiro Jonishi, Tomohiro Imai, Takahiro Mori, Takahide Tanaka, Masashi Akahane, Hiroshi Kanno
Publikováno v:
2014 IEEE 26th International Symposium on Power Semiconductor Devices & IC's (ISPSD).
A novel high-side well structure for a 1200V-class HVIC on a p-type substrate has been developed. The high-side well structure, consists of divided well regions with different voltage, makes it possible to integrate multiple circuits driven by differ
Autor:
Hitoshi Sumida, Masaharu Yamaji, Akihiro Jonishi, Haruhiko Nishio, Takahide Tanaka, Masashi Akahane, Hiroshi Kanno
Publikováno v:
2014 International Power Electronics Conference (IPEC-Hiroshima 2014 - ECCE ASIA).
In this paper, a new level up shifter with high dV/dt and negative transient voltage noise immunities is presented. The proposed level up shifter achieves high noise immunity without an increase in the delay time of high-voltage ICs (HVICs). A fabric
Autor:
Masaharu Yamaji, Johnny K. O. Sin, Xiangming Fang, Yoshiaki Toyoda, Masashi Akahane, Lulu Peng, Rongxiang Wu, Hitoshi Sumida
Publikováno v:
2013 25th International Symposium on Power Semiconductor Devices & IC's (ISPSD).
In this paper, a novel 3D TSV (Through-Silicon-Via) transformer technology for power system-on-chip applications is proposed and demonstrated experimentally. The transformer used in the power system features a galvanic isolation of > 4 kV and a volta
Publikováno v:
Sensors and Actuators B: Chemical. 5:241-243
Acid urease is immobilized onto porous glass beads with controlled pore size and packed into a small polymer column. The simple biosensing system for determination of urea comprises the immobilized enzyme column and a flow-through microcalorimetric d
Autor:
Masashi Akahane, Junya Yamakawa
Publikováno v:
The Proceedings of Mechanical Engineering Congress, Japan. 2012:G180011-1