A5102718406- Fuel Cells and Related Materials
- Hybrid Renewable Energy Systems
- Hydrogen Storage and Materials
- Plasma and Flow Control in Aerodynamics
- Semiconductor materials and devices
- Advancements in Semiconductor Devices and Circuit Design
- Energy, Environment, Agriculture Analysis
- Advanced Battery Technologies Research
- Electrocatalysts for Energy Conversion
- Ammonia Synthesis and Nitrogen Reduction
- Low-power high-performance VLSI design
- Lattice Boltzmann Simulation Studies
- Conducting polymers and applications
- Astrophysics and Cosmic Phenomena
- Fluid Dynamics and Turbulent Flows
- Aerosol Filtration and Electrostatic Precipitation
- Energy and Environmental Systems
- Advanced battery technologies research
- Fluid Dynamics and Heat Transfer
- Photonic and Optical Devices
- Engineering Applied Research
- Building Energy and Comfort Optimization
- Radio Frequency Integrated Circuit Design
- Advancements in Solid Oxide Fuel Cells
- Spacecraft and Cryogenic Technologies
National Institute of Advanced Industrial Science and Technology
2014-2025
Ibaraki University
2012
Tokyo Metropolitan University
2012
Nippon Shinyaku (Japan)
2012
Tohoku University
2002-2009
Sapporo University
2008
University of Electro-Communications
2003-2005
Mitsubishi Heavy Industries (Japan)
2002-2005
NEC (Japan)
1985-2003
Toshiba (Japan)
1984-2003
This paper describes a variable supply-voltage (VS) scheme. From an external supply, the VS scheme automatically generates minimum internal supply voltages by feedback control of buck converter, speed detector, and timing controller so that they meet demand on its operation frequency. A 32-b RISC core processor is developed in 0.4-/spl mu/m CMOS technology which optimally controls supple with threshold through substrate bias control. Performance MIPS/W improved factor more than two compared...
Unitized reversible fuel cells (URFCs) combine the functionality of a cell (FC) and an electrolyzer (Ely) in single device. In polymer electrolyte URFCs, gas purging is crucial switching from Ely to FC operation. A purge model was developed here clarify relationship between time flow rate. The considers evaporation diffusion liquid water layer membrane. To validate our model, we compared predictions high frequency resistance vs with experimental results for two URFCs different sizes at...
A 300 MIPS/W RISC core processor with variable supply-voltage (VS) scheme in threshold-voltage CMOS (VTCMOS) is presented. Performance can be improved by a factor of more than two no modification the except for substrate contacts VTCMOS. From 3.3 V external power supply VS automatically generates minimum internal voltages which meet demand on its operation frequency.