Plenary Lecture

Monolithic Integration of High-Voltage Generators

Professor Jan Doutreloigne
CMST (University of Gent + IMEC)
Technologiepark 914-A
9052 Zwijnaarde (Gent)

Abstract: Many applications like bistable display drivers or MEMS actuator drivers require on-chip high-voltage generators with specific needs in terms of power efficiency, voltage and current range, response time, output voltage stability, programmability and silicon cost. This talk will give general guidelines on how the most suitable high-voltage generator topology can be chosen for a given application based on a number of selection criteria. Both inductor-based boost converters and capacitor-based charge-pumps will be considered and compared, and the specific implementation down to component or transistor level will be analyzed. Dedicated feedback architectures to obtain full digital programmability will be presented and techniques for achieving maximum power efficiency will be explained. This includes e.g. charge-recycling, sequential sub-pump boosting and variable frequency boosting. Based on real chip designs it will be shown how these features can be integrated in advanced smart-power IC technologies for various applications. Experimental data will be compared to the theoretical predictions, leading to the conclusion that the presented methodologies and techniques are indeed capable of complying with the stringent specifications imposed by the application.

Brief Biography of the Speaker: Prof. Jan Doutreloigne obtained his Master and PhD degrees in electronic engineering from the University of Gent (Belgium) in 1987 and 1992 respectively. His PhD research dealt with the development of a complementary TFT technology for the integration of driver circuits on active matrix LCDs. From 1992 to 1998, he was a full-time lecturer at the University of Cuenca (Ecuador) in the area of electronics, telecommunications and computer sciences. In 1998, he joined the Centre for Microsystems Technology (CMST), which is a research facility at the University of Gent as well as an associated laboratory of the Inter-university MicroElectronics Centre (IMEC). Prof. Jan Doutreloigne is appointed as full-time professor at the University of Gent, responsible for conducting research in the area of advanced electronic microsystems and teaching courses in the field of microelectronics. At the same time he is also an R&D manager at IMEC, responsible for leading and coordinating national and European research projects related to microelectronic design. He is currently leading a research team at the CMST laboratory, specialized in the full-custom design of mixed analog-digital integrated circuits and the development of advanced high-voltage transistors in smart-power technologies. He is author or co-author of more than 100 papers in international technical journals and conference proceedings, and is inventor of several patents.