NDLI: A 20-300mV transformer-based self-startup flyback converter with MPPT and ZCS control for thermoelectric energy harvesting

Content Provider	IEEE Xplore Digital Library
Author	Haozhou Zhang Menglian Zhao Sheng Liu Yuhua Fang Xiaobo Wu
Copyright Year	2014
Description	Author affiliation: Inst. of VLSI design, Zhejiang Univ., Hangzhou, China (Haozhou Zhang; Menglian Zhao; Sheng Liu; Yuhua Fang; Xiaobo Wu)
Abstract	A novel high efficiency transformer-based flyback dc-dc converter with maximum power point tracking (MPPT) and zero current switching (ZCS) control is proposed in this paper. By adding a new primary side, the transformer works in flyback mode and the ordinary n-well process is used rather than twin-well. The startup process is divided into two modes: oscillation mode and constant duty-cycle flyback mode, greatly reduce startup time. The MPPT and ZCS control block work periodically, maximizing the energy delivered to the output capacitors. And the control methods are based on successive approximation digital logic. This converter is implemented in UMC 0.18μm CMOS process. Simulation results show that the current consumption of controller is only 0.6μA. Compared to previous work, the efficiency increase from 61% to 91% at $V_{IN}=300mV,$ and from 35% to 75% at $V_{IN}=20mV.$
Starting Page	41
Ending Page	44
File Size	943353
Page Count	4
File Format	PDF
ISBN	9781479941346
ISSN	15483746
e-ISBN	9781479941322
DOI	10.1109/MWSCAS.2014.6908347
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2014-08-03
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Zero current switching Maximum power point trackers Voltage control Capacitors Clocks Switches ZCS energy harvesting transformer-based flyback self-startup high power efficiency MPPT
Content Type	Text
Resource Type	Article
Subject	Electronic, Optical and Magnetic Materials Electrical and Electronic Engineering

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