Poziv na predavanje "Application of Fully Integrated DC-DC Converters in State-of-the-Art Power Management Systems"

Abstract: Emerging nanoscaled integrated systems are required to function at ultra-low power which is impossible without efficient power management. A Low-Drop-Out linear regulator (LDO) can be efficiently utilized only in circuits with an operating voltage close to the battery voltage level. However, state-of-the-art integrated systems usually operate at several different voltage levels some of which are typically a few times lower than the battery voltage level. In a such scenario, DC-DC converters become an indispensable part of power management. A fully integrated ultra-low-power step-down DC-DC converter is demonstrated in 65nm. This circuit is useful for converting battery voltage levels (2.5 - 3V) to digital and mixed-signal voltage levels for low- power always-on domains. A down-conversion of 5:1 is utilized to provide a near-Vth digital voltage of 0.55-0.6V while making higher voltages (1.2V, 1.8V) available as well. An inverter-based amplifier is utilized to achieve high-speed regulation at low power. Measured results show an Efficiency-Enhancement-Factor (EEF) of 66% and a power density of 2.56 mW/mm2 at an output power of 100µW. At this power, these parameters represent the state-of-the-art. The DC-DC converter has a fast transient response which results in operation with minimal droops and overshoots even with output capacitors as low as 50 pF.

Biography:  Edi Emanović was born in Nova Gradiška, where he completed primary and secondary education. He graduated from the Faculty of Electrical Engineering and Computing in 2016 on the subject of active, fully integrated, electrical filters in CMOS technology. In the same year, he began his doctoral studies at the Faculty of Electrical Engineering and Computing and went to Bar-Ilan University in Israel for professional training. At the Bar-Ilan, he begins his research on fully integrated DC-DC converters in collaboration with the ENICS laboratory team. The application of DC-DC converters in state-of-the-art power management systems has become his main preoccupation and the topic of his doctoral thesis. In addition to academic involvement at the University of Zagreb and Bar-Ilan University in Israel, he also participates in numerous industrial projects in cooperation with various companies, the most prominent of which are KONČAR-Institute for Electrical Engineering and Xylon.