A Nanocurrent Power Management IC for Low-Voltage Energy Harvesting Sources

被引：51

作者：

Dini, Michele ^{[1
]}

Romani, Aldo ^{[1
]}

Filippi, Matteo ^{[1
]}

Tartagni, Marco ^{[1
]}

机构：

[1] Univ Bologna, Dept Elect Elect & Informat Engn, I-47521 Cesena, Italy

来源：

IEEE TRANSACTIONS ON POWER ELECTRONICS | 2016年 / 31卷 / 06期

关键词：

DC/DC conversion; energy harvesting; maximum power point tracking (MPPT); nanopower circuits; photovoltaic; power management; RF harvesting; CIRCUIT; DESIGN; CONVERTER; SOLAR; MPPT;

D O I：

10.1109/TPEL.2015.2472480

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

This paper presents the nanopower design of an integrated 1-mu W-to-5-mW power management circuit. The circuit integrates a boost converter with maximum power point tracking, a low drop-out voltage regulator (LDO), and a start-up circuit for battery-less activation from discharged states. The IC implements a dynamic two-way power routing policy that ensures a fast start-up from discharged states even with very large energy storage capacitors. In order to reduce the intrinsic power, asynchronous control logic was adopted. The circuit was implemented in a STMicroelectronics 0.32-mu m microelectronic technology. The power conversion section and the LDO draw, respectively, stand-by currents of 121 and 414 nA in the active modes. The circuit achieves a peak conversion efficiency of 77.1% and a minimum start-up voltage of 223 mV.

引用

页码：4292 / 4304

页数：13

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