학술논문
Extended Power Dynamic Range and Enhanced Power Conversion Efficiency of a Switched-Capacitor DC–DC Converter: A Tutorial
Document Type
Periodical
Author
Source
IEEE Transactions on Circuits and Systems II: Express Briefs IEEE Trans. Circuits Syst. II Circuits and Systems II: Express Briefs, IEEE Transactions on. 71(3):1606-1612 Mar, 2024
Subject
Language
ISSN
1549-7747
1558-3791
1558-3791
Abstract
This tutorial brief presents a concise overview of integrated switched-capacitor (SC) DC-DC converter topologies for miniaturized energy harvesting (EH) IoT systems aiming for extended power dynamic range (PDR) and enhanced power conversion efficiency (PCE). This tutorial initiates by delving into the intricate SC conversion methodologies tailored for energy harvesting (EH) applications, including i) fine-grained conversion ratio (CR) tuning, ii) multiphase soft charging, and iii) clock frequency and amplitude scaling. Next, mathematical analysis is conducted along with an established model to correlate the prevailing dominant loss and its impact on the PCE and the PDR, aiming to provide designers with a guideline for different design parameter choices for the triode/subthreshold domain.