A low-power CMOS energy harvesting circuit for wearable sensors using piezoelectric transducers
A low-power CMOS energy harvesting circuit for wearable sensors using piezoelectric transducers
复制标题
使用压电传感器的可穿戴传感器的低功耗 CMOS 能量收集电路
DOI：
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发表时间：
2017
期刊：
影响因子：
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通讯作者：
M. Mahfouz
中科院分区：
文献类型：
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作者：
Taeho Oh;S. Islam;G. To;M. Mahfouz
本文提出了一种用于压电换能器的低功耗CMOS开关AC-DC全桥整流器。它由两个NMOS和两个PMOS晶体管组成，它们被配置为与连接到主全桥整流器的PMOS晶体管的基于运算放大器的开关控制电路一起作为全桥整流器沿着操作。在负载为45 K Ω时，输出整流电压为703 mV，输入压电换能器电压为694 mV。模拟VOUT与VIN的转换比为98.7%，效率为46%。该电路采用标准0.13µm CMOS工艺实现。
In this paper, a low-power CMOS AC-to-DC full-bridge rectifier with a switch for piezoelectric transducers is presented. It consists of two NMOS and two PMOS transistors, which are configured to operate as a full-bridge rectifier along with an Op-Amp-based switch control circuit which is connected to a PMOS transistor of the main full-bridge rectifier. With a load of 45KΩ, the output rectifier voltage is 703mV and the input piezoelectric transducer voltage is 694mV. Simulated VOUT versus VIN conversion ratio is 98.7% with an efficiency of 46%. The circuit has been implemented in a standard 0.13µm CMOS process.