A Subthreshold Cross-Coupled Hybrid Charge Pump for 50-mV Cold-Start

被引：32
作者：
Ballo, Andrea [1 ]
Grasso, Alfio Dario [1 ]
Palumbo, Gaetano [1 ]
机构：
[1] Univ Catania, Dipartimento Ingn Elettr Elettron & Informat DIEE, I-95125 Catania, Italy
来源：
IEEE ACCESS | 2020年 / 8卷
关键词：
Charge pump (CP); Dickson charge pump; energy harvesting; power management; switched-capacitor boost converter; thermoelectric generator; MV INPUT VOLTAGE; DC-DC CONVERTER; BOOST CONVERTER; ENERGY; CIRCUITS; DESIGN; CMOS;
D O I：
10.1109/ACCESS.2020.3032452
中图分类号：
TP [自动化技术、计算机技术];
学科分类号：
0812 ;
摘要：
In this article, a fully-integrated switched-capacitor DC-DC converter based on a Dickson charge pump able to work with input voltage levels that force the transistors working in subthreshold region is presented. The proposed topology exploits resistors in the charge transfer switch in order to overcome the limits of conventional solutions when working in the subthreshold regime. Post-layout simulations using a 28-nm FD-SOI technology show that the CP can boost an input voltage as low as 50 mV to a maximum output voltage of 270 mV, keeping a settling time about 25X lower than the conventional dual-branch cross-coupled charge pump and a voltage conversion efficiency higher than 76%. The proposed topology is particularly suited for the start-up of power management units supplied by thermoelectric generators.
引用
收藏
页码：188959 / 188969
页数：11
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