A wide-input-range boost converter with three-phase self-start and adaptive zero current detector for photovoltaic energy harvesting

IF 2.2 3区工程技术 Q3 COMPUTER SCIENCE, HARDWARE & ARCHITECTURE

Integration-The Vlsi Journal Pub Date : 2025-02-01 DOI:10.1016/j.vlsi.2025.102376

Hao Wang, Ping Luo, Xiangwen Xin, Yunze Li

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引用次数: 0

Abstract

In this paper, a 0.1–4.2V input boost converter with 1.5 μA quiescent current consumption for microscale photovoltaic energy harvesting applications is proposed. The chip integrates a charge-pump-based three-phase self-start circuit that actives the converter with an input voltage of 0.6V. Moreover, the proposed self-start circuit reduces the capacitance area of charge pump by 40 % and the energy loss by 60 % compared to traditional two-phase self-start circuit. After completing self-start, the converter is capable of harvesting energy from an input voltage as low as 100 mV and covering a wide output power range of 5μW-460mW. The on-time of the high-side switch adapts dynamically to the input and output voltages for zero-current switching by adopting an adaptive zero current detector. The proposed chip has been fabricated using 180 nm CMOS technology and occupies an active area of 0.58 mm². According to the measured efficiency at different load current, a peak efficiency of 93.7 % is achieved.

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来源期刊

Integration-The Vlsi Journal 工程技术-工程：电子与电气

CiteScore

3.80

自引率

5.30%

发文量

107

审稿时长

6 months

期刊介绍： Integration''s aim is to cover every aspect of the VLSI area, with an emphasis on cross-fertilization between various fields of science, and the design, verification, test and applications of integrated circuits and systems, as well as closely related topics in process and device technologies. Individual issues will feature peer-reviewed tutorials and articles as well as reviews of recent publications. The intended coverage of the journal can be assessed by examining the following (non-exclusive) list of topics: Specification methods and languages; Analog/Digital Integrated Circuits and Systems; VLSI architectures; Algorithms, methods and tools for modeling, simulation, synthesis and verification of integrated circuits and systems of any complexity; Embedded systems; High-level synthesis for VLSI systems; Logic synthesis and finite automata; Testing, design-for-test and test generation algorithms; Physical design; Formal verification; Algorithms implemented in VLSI systems; Systems engineering; Heterogeneous systems.