ULTRA-LOW POWER BOOST CONVERTER WITH CONSTANT ON-TIME-BASED MPPT FOR ENERGY HARVESTING APPLICATIONS

被引：2

作者：

Chen, Mingyang ^{[1
]}

Zhao, Menglian ^{[1
]}

Liu, Qing ^{[1
]}

Wang, Lu ^{[1
]}

Wu, Xiaobo ^{[1
]}

机构：

[1] Zhejiang Univ, Inst VLSI Design, Hangzhou 310003, Zhejiang, Peoples R China

来源：

JOURNAL OF CIRCUITS SYSTEMS AND COMPUTERS | 2014年 / 23卷 / 02期

基金：

中国国家自然科学基金;

关键词：

Boost; energy harvesting; low power dc-dc; CIRCUIT;

D O I：

10.1142/S0218126614500273

中图分类号：

TP3 [计算技术、计算机技术];

学科分类号：

0812 ;

摘要：

An ultra-low power boost converter for energy harvesting applications is introduced in this brief. The idle power dissipation is reduced to 800 nW by using a novel output voltage detector (OVD) which is insensitive to temperature variation and process deviation. Furthermore, a constant on-time (COT)-based hysteretic burst mode controller with maximum power point tracking (MPPT) technique is developed to ensure high power efficiency for a wide input voltage range. After startup, the input voltage can be set as low as 30 mV. The whole system is designed and fabricated in SMIC 0.18 mu m CMOS process, the end-to-end power efficiency of this converter can reach 49% at 350 mV input voltage and 65% at 750 mV input voltage.

引用

页数：12

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