Paper Info
Title
A single-inductor triple-input-triple-output (SITITO) energy harvesting interface with cycle-by-cycle source tracking and adaptive peak-inductor-current control
Abstract
In this paper, a single-inductor triple-input-triple-output (SITITO) buck-boost converter with cycle-by-cycle source tracking (CCST) is developed for multi-source energy harvesting. The proposed CCST is capable of harvesting power from the PV and TEG simultaneously, and automatically selects the appropriate source according to the maximum power point (MPP) of the transducers in each switching cycle. The converter provides two regulated outputs for the analog (Vout1 = 1.2 V) and the digital (Vout2 = 0.4-0.6 V) circuits, while storing the excess energy in a storage capacitor (Cout3). An adaptive on-time (AOT) circuit with an adaptive peak-inductor-current (APIC) control is developed for dynamically adjusting the on-time based on the input voltage (VIN) to obtain high conversion efficiency under different VIN. The proposed converter achieves a peak efficiency of 84.4% with an available input voltage of 0.05 V to 0.8 V. Compared to the conventional constant peak-inductor-current (CPIC) control, the proposed APIC improves 11 % efficiency at low Vin.
Year
DOI
Venue
2017
10.1109/ASSCC.2017.8240229
2017 IEEE Asian Solid-State Circuits Conference (A-SSCC)
Keywords
Field
DocType
dc-dc converter,multi-source energy harvesting,source tracking,adaptive peak-inductor-current control
Transducer,Energy conversion efficiency,Capacitor,Computer science,Voltage,Energy harvesting,Inductor,Electronic engineering,Maximum power principle,Electronic circuit,Electrical engineering
Conference
ISBN
Citations 
PageRank 
978-1-5386-3179-9
0
0.34
References 
Authors
5
5
Name
Order
Citations
PageRank
Chi-Wei Liu171.60
Ming-Jie Chung252.24
Hui-Hsuan Lee371.94
Pei-Chun Liao451.57
Po-Hung Chen56511.24