Single-Inductor Dual-Input Dual-Output Battery-PV Hybrid System with 2-D Adaptive On-Time Control for Internet of Things

Hui Hsuan Lee; Chi Wei Liu; Makoto Takamiya; Po-Hung Chen

doi:10.1109/TCSI.2019.2950330

Single-Inductor Dual-Input Dual-Output Battery-PV Hybrid System with 2-D Adaptive On-Time Control for Internet of Things

Hui Hsuan Lee, Chi Wei Liu, Makoto Takamiya, Po-Hung Chen^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

19 Scopus citations

Abstract

In this article, we present a single-inductor dual-input dual-output power converter with two-dimensional adaptive-on-time (2-D AOT) control for Internet of things (IoT) applications. The proposed system combines energy from a 0.55-0.7 V photovoltaic (PV) module with a non-rechargeable 1.4-V zinc-air battery to extend the battery life. The proposed converter employs the buck-boost mode and the buck mode for the PV module and the battery, respectively, to produce two output voltages for different loading currents. The proposed 2-D AOT technique not only reduces the output voltage ripple but also improves the dual-source conversion efficiency over a wide input voltage range. Moreover, the response time of the self-tracking zero-current detector can also be improved by the proposed 2-D AOT. We fabricated the test chip using 0.18- μ m technology in an area of 1.9×2.2 mm². The measurement results demonstrated a peak efficiency of 92.5% with an input voltage range of 0.55-1.4 V. The output voltage ripple was less than 2.3% VOUT under different input voltage ranges.

Original language	English
Article number	8903529
Pages (from-to)	1069-1078
Number of pages	10
Journal	IEEE Transactions on Circuits and Systems I: Regular Papers
Volume	67
Issue number	3
DOIs	https://doi.org/10.1109/TCSI.2019.2950330
State	Published - Mar 2020

Keywords

2-D adaptive-on-time
DC-DC converter
photovoltaic energy harvesting
single-inductor dual-input dual-output

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1109/TCSI.2019.2950330

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title = "Single-Inductor Dual-Input Dual-Output Battery-PV Hybrid System with 2-D Adaptive On-Time Control for Internet of Things",

abstract = "In this article, we present a single-inductor dual-input dual-output power converter with two-dimensional adaptive-on-time (2-D AOT) control for Internet of things (IoT) applications. The proposed system combines energy from a 0.55-0.7 V photovoltaic (PV) module with a non-rechargeable 1.4-V zinc-air battery to extend the battery life. The proposed converter employs the buck-boost mode and the buck mode for the PV module and the battery, respectively, to produce two output voltages for different loading currents. The proposed 2-D AOT technique not only reduces the output voltage ripple but also improves the dual-source conversion efficiency over a wide input voltage range. Moreover, the response time of the self-tracking zero-current detector can also be improved by the proposed 2-D AOT. We fabricated the test chip using 0.18- μ m technology in an area of 1.9×2.2 mm2. The measurement results demonstrated a peak efficiency of 92.5% with an input voltage range of 0.55-1.4 V. The output voltage ripple was less than 2.3% VOUT under different input voltage ranges.",

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author = "Lee, {Hui Hsuan} and Liu, {Chi Wei} and Makoto Takamiya and Po-Hung Chen",

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AB - In this article, we present a single-inductor dual-input dual-output power converter with two-dimensional adaptive-on-time (2-D AOT) control for Internet of things (IoT) applications. The proposed system combines energy from a 0.55-0.7 V photovoltaic (PV) module with a non-rechargeable 1.4-V zinc-air battery to extend the battery life. The proposed converter employs the buck-boost mode and the buck mode for the PV module and the battery, respectively, to produce two output voltages for different loading currents. The proposed 2-D AOT technique not only reduces the output voltage ripple but also improves the dual-source conversion efficiency over a wide input voltage range. Moreover, the response time of the self-tracking zero-current detector can also be improved by the proposed 2-D AOT. We fabricated the test chip using 0.18- μ m technology in an area of 1.9×2.2 mm2. The measurement results demonstrated a peak efficiency of 92.5% with an input voltage range of 0.55-1.4 V. The output voltage ripple was less than 2.3% VOUT under different input voltage ranges.

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Single-Inductor Dual-Input Dual-Output Battery-PV Hybrid System with 2-D Adaptive On-Time Control for Internet of Things

Abstract

Keywords

UN SDGs

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