一种用于振动能量获取的接口电路

doi:10.3969/j.issn.1001-2400.2015.06.021

J4 ›› 2015, Vol. 42 ›› Issue (6): 118-123.doi: 10.3969/j.issn.1001-2400.2015.06.021

一种用于振动能量获取的接口电路

王静敏;杨正;杨银堂

(西安电子科技大学微电子学院，陕西西安 710071)

收稿日期:2014-11-21 出版日期:2015-12-20 发布日期:2016-01-25
作者简介:王静敏(1987-)，女，西安电子科技大学博士研究生，E-mail:xidian_wangjm@163.com．
基金资助:
国家自然科学基金资助项目(61234002，61322405，61306044，61376033)；国家863计划资助项目(2012AA012302，2013AA014103)

Highly efficient interface circuit for vibrational energy harvesting applications

WANG Jingmin;YANG Zheng;YANG Yintang

(School of Microelectronic, Xidian Univ., Xi'an 710071, China)

Received:2014-11-21 Online:2015-12-20 Published:2016-01-25

摘要/Abstract

摘要：

提出了一种应用于振动能量获取的低压高效接口电路．采用输入电压作为接口电路的电源电压，当输入电压较低时，整个接口电路处于休眠状态，电路无功耗，从而提高了电路的能量转换效率．整流器中的比较器采用衬底输入，有效地降低了电路对电源电压的要求，使得最低输入电压仅为02V．基于SMIC 018μm 33V 标准CMOS工艺，采用Cadence Spectre进行了仿真验证．当输入电压为02V(100Hz)，负载为40kΩ时，电压转换效率高达89％；当输入电压为025V(100Hz)，负载为40kΩ时，能量转换效率达到80％，电路的最大能量转换效率高达90％．

关键词: 振动能量获取, 输入供电, CMOS有源整流器, 有源二极管, 亚阈值, 衬底驱动

Abstract:

An input-powered vibrational energy harvesting interface circuit is presented. By using a bulk-driven comparator, the lowest input voltage amplitude can be reduced to 02 V. When the input voltage amplitude is low enough, the circuit can automatically shut down by adopting the input-powered, thereby avoiding unnecessary energy loss. Based on standard SMIC 018μm 33V CMOS technology, simulation results show that the voltage conversion efficiency can reach up to 89％ when the input voltage equals 02V@100Hz with a load resistance of 40kΩ. The energy conversion efficiency can reach up to 80％ when the input voltage equals 025V@100Hz with a load resistance of 40kΩ, and the maximum efficiency can be up to 90％. Input voltages with frequencies in the range of 10～500Hz can be rectified.

Key words: vibrational energy harvesting, an input-powered, CMOS active rectifier, active diode, subthreshold region, bulk-driven

王静敏;杨正;杨银堂. 一种用于振动能量获取的接口电路[J]. J4, 2015, 42(6): 118-123.

WANG Jingmin;YANG Zheng;YANG Yintang. Highly efficient interface circuit for vibrational energy harvesting applications[J]. J4, 2015, 42(6): 118-123.

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一种用于振动能量获取的接口电路

Highly efficient interface circuit for vibrational energy harvesting applications

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