Power management integrated circuit featuring high-efficiency analog techniques

doctoral thesis

• Title (croatian): Integrirani sklop za upravljanje napajanjem zasnovan na analognim postupcima visoke učinkovitosti
• Author: Edi Emanović
• Mentor: Dražen Jurišić (mentor)
• Committee member: Marko Koričić (predsjednik povjerenstva)
• Committee member: Vladimir Čeperić (član povjerenstva)
• Committee member: Tomislav Matić (član povjerenstva)
• Granter: University of Zagreb; Faculty of Electrical Engineering and Computing; (Department of Electronic Systems and Information Processing); Zagreb
• Defense date and country: 2024-09-24, Croatia
• Scientific / art field, discipline and subdiscipline: TECHNICAL SCIENCES; Electrical Engineering
• Universal decimal classification (UDC): 621.3 - Electrical engineering

Abstract

The rapid advancement of Internet-of-Things (IoT) devices has pushed the boundaries of System-on-Chip (SoC) solutions, leading to a higher demand for stable on-chip power supplies. The primary function of an integrated power management circuit is to generate required voltage levels on-chip from an external energy source while ensuring high energy efficiency, speedy response, and stability. Additionally, the energy harvesting function may be included as part of the power management circuit, enabling the utilization of energy from the environment to improve overall energy efficiency. The scientific contribution to the field of fully integrated power management was conducted in a way of designing and producing four distinguished integrated circuits: a step-down DC-DC converter in TSMC 65nm, a boost DC-DC converter in TSMC 180nm, a low-power clock generator in TSMC 180nm, and a digitally controlled fractional-order capacitor in AMS 350nm. Measured and simulated results indicate that novel circuits and techniques developed during research for doctoral studies enable the state-of-the-art performance of DC-DC converters in terms of energy efficiency, power density, and speed. The fact that DC-DC converters play a crucial role in power management makes the presented circuits inspiring solutions for low-power applications of IoT devices.

Abstract (croatian)

Brzi napredak uređaja korištenih za internet stvari, engl. Internet-of-Things (IoT), pomaknuo je granice potreba sustava na čipu, engl. System-on-Chip (SoC), što je dovelo do povećane potražnje za stabilnim izvorima napajanja na čipu. Primarna funkcija integriranog sklopa za upravljanje napajanjem je generiranje potrebnih razina napona iz vanjskog izvora energije uz osiguranje visoke energetske učinkovitosti, brzog odziva i stabilnosti. Funkcija prikupljanja energije može biti također uključena kao dio sklopa za upravljanje napajanjem, omogućujući korištenje energije iz okoliša za poboljšanje ukupne energetske učinkovitosti. Znanstveni doprinos području potpuno integriranog upravljanja napajanjem proveden je na način da su projektirana i proizvedena četiri izdvojena integrirana sklopa: step-down DC-DC pretvarač u TSMC 65nm, boost DC-DC pretvarač u TSMC 180nm, generator takta niske potrošnje u TSMC 180nm i digitalno kontrolirani kondenzator necjelobrojnog reda u AMS 350nm. Izmjereni i simulirani rezultati pokazuju da novi sklopovi i tehnike razvijeni tijekom istraživanja za doktorski studij omogućavaju napredak performansi DC-DC pretvarača u pogledu energetske učinkovitosti, gustoće snage i brzine. Činjenica da DC-DC pretvarači igraju ključnu ulogu u upravljanju napajanjem čini predstavljene sklopove inspirativnim rješenjima za aplikacije niske potrošnje IoT uređaja.

• Keywords: DC-DC converters; clock generators; energy harvesting; power management; analog techniques; efficiency; fractional order; regulation
• Keywords (croatian): DC-DC pretvarači; generator signala takta; prikupljanje energije; upravljanje napajanjem; analogne tehnike; učinkovitost; frakcionalni red; regulacija
• Language: english
• URN:NBN: urn:nbn:hr:168:527445
• Promotion: 2025
• Study programme: Title: Doctoral study programme "Electrical Engineering and Computing"; Study programme type: university; Study level: postgraduate; Academic / professional title: doktor/doktorica znanosti, po-dručje tehničkih znanosti (doktor/doktorica znanosti, po-dručje tehničkih znanosti)
• Type of resource: Text
• Extent: 95 str.
• File origin: Born digital
• Access conditions: Open access
• Created on: 2025-01-29 12:53:24