期刊
IEEE JOURNAL OF SOLID-STATE CIRCUITS
卷 56, 期 2, 页码 541-553出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/JSSC.2020.3012991
关键词
Buck converter; dc-dc converter; dual input (DI); energy harvesting (EH); high-voltage (HV) sampling; inductor sharing; three-level gate driver (TLGD); triboelectric nanogenerator (TENG)
资金
- National Research Foundation of Korea (NRF) - Korea government (MSIT) [2019R1A2B5B03100756]
- IC Design Education Center (IDEC), Korea
- National Research Foundation of Korea [2019R1A2B5B03100756] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
This article presents a high-voltage dual-input buck converter with a bidirectional inductor current and a fully integrated maximum power point tracking circuit for triboelectric energy-harvesting applications. Fabricated using a 180-nm BCD process and equipped with a self-made PTFE-based TE nanogenerator, it achieves significantly higher power conversion efficiency and end-to-end efficiency compared to prior research.
This article presents a high-voltage (HV) dual-input buck converter with a bidirectional inductor current ( IL) and a fully integrated maximum power point tracking circuit for triboelectric (TE) energy-harvesting applications. The proposed converter regulates HV inputs through a single shared inductor, and HV inputs can be isolated without using an additional HV protection circuit. In addition, the proposed diode-based HV sampling circuit can accomplish high ac voltage sampling and peak detection to perform the fractional open-circuit voltage method without any external components. Fabricated using a 180-nm bipolar-CMOS-DMOS (BCD) process, the proposed system with a self-manufactured polytetrafluroethylene (PTFE)based TE nanogenerator can regulate two HV inputs up to 70 V and achieve a power conversion efficiency of 84.7% and an end-to-end efficiency of 75.6%, which are 30.2% and 22.7% better than prior work, respectively.
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