ECE Departmental Seminar - My Ground-Clearing Attempts at Power Management Integrated Circuit Research
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In this talk, I would like to look back on my journey in PMIC research. I studied switching converters at Caltech and IC design at UCLA. I started my research efforts in PMIC in deriving loop gain functions of PWM switch mode power converters when working in Micro Linear. After joining HKUST, I initiated research in single-inductor multi-output converters and later analyzed voltage-mode hysteresis control. Conventional analyses of wireless power receivers assume resistive loads, but in practice, rectifier loads should be analyzed. Analyzing switched capacitor converters has been very tedious, and I recently devised a simple method that also computed the conduction loss due to incomplete charge transfer. I hope to convey the message that fundamental research is as important as innovative circuit techniques and control methods.
Ki studied for his BSc at UCSD, MSc at Caltech, and PhD at UCLA. He joined Micro Linear in San Jose in 1992, working on the design of switch mode power converters. He then joined HKUST in 1995, where he is now a Professor with the Department of Electronic and Computer Engineering. His research interests are power management integrated circuits and systems, switched-inductor converters, switched-capacitor converters, linear regulators, wireless power transfer for low-power applications, and fundamental research in analog integrated circuit analysis and design.