Supplying sufficient energy and managing supplied energy efficiently is another very important aspect of system design and implementation. Depending on the application and usage scenario, the choice of the energy source for microsystems can be various, including the battery, wireless power transfer, and energy harvesting. In this program, we have developed energy supply and management ICs that work with all these important types of energy sources. New circuit techniques and structures have been proposed to maximize the advantages of the targeted energy source while minimizing its disadvantages. Recently, we started to work on intra-body power transfer ICs to resolve the discrepancy between the optimal locations for energy sourcing or harvesting and the desired locations of wearable devices on the human body.
Wireless Power Transfer ICs
My research group has made significant contributions to advancing the art of wireless power transfer ICs by not only innovating the circuit techniques and structures but also demonstrating them in the context of emerging biomedical systems and applications
DC-DC Converter ICs
We have worked on DC-DC converter ICs for various applications. We develop advanced buck, buck-boost, and hybrid converter architectures that achieve fast transient response, wide input voltage range operation, and high power efficiency. Our designs address challenges such as EMI mitigation, simplified control across modes, and accurate load current regulation. Applications include power management for batteries, OLED drivers, and low-power systems.
Energy Harvesting ICs
My research group has developed new circuit techniques and structures for energy harvesting ICs that can be used with IoT sensor nodes and mobile devices.
Intra-Body Power Transfer ICs
Intra-body-power-transfer (IBPT) has emerged as an alternative solution to energy harvesting and wireless power transfer because it can supply power regardless of the locations of the power source and the wearables on the body.