(Topics)
 Energy harvesting technology
 Semiconductor memory system
 Analog circuit system
 Power conversion system

The shipment volume of integrated circuits, such as IoT devices, AI-specific LSIs, and driver ICs for power semiconductors, continues to expand every year. As a result, the overall power consumption of integrated circuits is also consistently increasing. Low power consumption at both the circuit and system levels, in other words, greening, is becoming increasingly important. In our research laboratory, we are conducting research and development on technologies to green the circuit systems of digital, analog, memory, and power converter used in these LSIs.

   Each lab member will have the opportunity to gain experience in circuit design (creating circuit diagrams, verifying operation with a circuit simulator, and designing layouts) as well as in the measurement and evaluation of prototype circuits and paper writing, as shown in Figs. 1, 2.

Let’s enjoy imagining circuit operation in a physical sense, quantifying characteristics with mathematical sense, and contemplating the greening of the system through overall optimization. If you are confident that you can continue what you are working on, you can do well enough in this laboratory.

Key Achievements

NAND Flash Design for 30% Power Reduction

Hybrid Thermoelectric Generator – Battery Power Supply System Toward Replacement-Free Battery

more Enhanced Swing Colpitts Oscillator as boost converter (mER)

Pre-emphasis pulse generator design