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San Fancisco, CA, USA
Aug. 19, 2009 to Aug. 21, 2009
ISBN: 978-1-60558-684-7
pp: 87-92
Tadashi Yasufuku , University of Tokyo, Tokyo, Japan
Koichi Ishida , University of Tokyo, Tokyo, Japan
Shinji Miyamoto , Toshiba Corporation, Yokohama, Japan
Hiroto Nakai , Toshiba Corporation, Yokohama, Japan
Makoto Takamiya , University of Tokyo, Tokyo, Japan
Takayasu Sakurai , University of Tokyo, Tokyo, Japan
Ken Takeuchi , University of Tokyo, Tokyo, Japan
ABSTRACT
A 3D-integrated Solid State Drive (SSD) with the boost converter can achieve both the low power and the fast write-operation at the small die area of the NAND flash memory. The performance of the boost converter, however, is critically affected by the inductor, because the output voltage of the boost converter, the rising time, and the energy consumption during the boost are determined by the inductor. Therefore, this paper proposes a design methodology of the inductor of the boost converter for the 3D SSD. By using the boost converter with the optimized inductor, the energy during write-operation of the proposed 1.8-V 3D-SSD is decreased by 68% compared with the conventional 3.3-V 3D-SSD with the charge pump.
INDEX TERMS
SSD, boost converter, charge pump, inductor design
CITATION
Tadashi Yasufuku, Koichi Ishida, Shinji Miyamoto, Hiroto Nakai, Makoto Takamiya, Takayasu Sakurai, Ken Takeuchi, "Inductor design of 20-V boost converter for low power 3D solid state drive with NAND flash memories", ISLPED, 2009, Low Power Electronics and Design, International Symposium on, Low Power Electronics and Design, International Symposium on 2009, pp. 87-92, doi:10.1145/1594233.1594253
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