Insights Into Tunnel FET-Based Charge Pumps and Rectifiers for Energy Harvesting Applications

被引：9
|
作者：
Cavalheiro, David [1 ]
Moll, Francesc [1 ]
Valtchev, Stanimir [2 ]
机构：
[1] Univ Politecn Cataluna, Dept Elect Engn, Barcelona 08034, Spain
[2] Univ Nova Lisboa, Fac Sci & Technol, Dept Elect Engn, P-2829516 Costa Da Caparica, Portugal
来源：
IEEE TRANSACTIONS ON VERY LARGE SCALE INTEGRATION (VLSI) SYSTEMS | 2017年 / 25卷 / 03期
关键词：
Charge pump; energy harvesting; passive rectifier; thermogenerator; tunnel field-effect transistor (TFET); ultralow power; FIELD-EFFECT TRANSISTORS; CIRCUITS; DESIGN;
D O I：
10.1109/TVLSI.2016.2617203
中图分类号：
TP3 [计算技术、计算机技术];
学科分类号：
0812 ;
摘要：
In this paper, the electrical characteristics of tunnel field-effect transistor (TFET) devices are explored for energy harvesting front-end circuits with ultralow power consumption. Compared with conventional thermionic technologies, the improved electrical characteristics of TFET devices are expected to increase the power conversion efficiency of front-end charge pumps and rectifiers powered at sub-mu W power levels. However, under reverse bias conditions the TFET device presents particular electrical characteristics due to its different carrier injection mechanism. In this paper, it is shown that reverse losses in TFET-based circuits can be attenuated by changing the gate-to-source voltage of reverse-biased TFETs. Therefore, in order to take full advantage of the TFETs in front-end energy harvesting circuits, different circuit approaches are required. In this paper, we propose and discuss different topologies for TFET-based charge pumps and rectifiers for energy harvesting applications.
引用
收藏
页码：988 / 997
页数：10
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