TAKAMIYA Makoto Professor
Komaba Campus
Systems & Electronics
Power engineering/Power conversion/Electric machinery
Electron device/Electronic equipment
Control engineering/System engineering
Energy engineering
Small Chip Intelligently Managing Large Power
To achieve a carbon-free world by 2050, we are conducting research on integrated power management, in which a small IC chip can intelligently handle large amounts of power, with the goal of making power electronics systems more energy-efficient.
Research field 1
Programmable Gate Driver IC for Power Devices
A programmable gate driver IC for IGBT to dynamically change the gate driving current during the switching of IGBT is developed. In the proposed gate driver, the 6-bit gate control signals with four 160-ns time steps are globally optimized using a simulated annealing algorithm, reducing the collector current overshoot by 37% and the switching loss by 47% at the double pulse test of 300V, 50A IGBT.
Research field 2
Hybrid DC-DC converters for EV applications
A DC-DC converter in an electric vehicle supplies power from a high-voltage battery to 12V auxiliaries to operate various electrical devices. With the expansion of vehicle functions in recent years, the output current of DC-DC converters tends to increase, and increased heat generation due to increased loss has become a problem. This research has proposed a new circuit topology for a hybrid DC-DC converter that incorporates inductors and capacitors, thereby reducing loss and heat generation.