High-Voltage Low-Power Startup Backup Battery Switch Using Low Voltage Devices in 28nm CMOS

被引：0

作者：

Neri, Filippo ^{[1
]}

Keogh, Craig ^{[1
]}

Brauner, Thomas ^{[1
]}

De Mey, Eric ^{[1
]}

Schippel, Christian ^{[2
]}

机构：

[1] U Blox, Zurcherstr 68, CH-8800 Thalwil, Switzerland

[2] Globalfoundries, Wilschdorfer Landstr 101, D-01109 Dresden, Germany

来源：

2016 29TH IEEE INTERNATIONAL SYSTEM-ON-CHIP CONFERENCE (SOCC) | 2016年

关键词：

low-power; CMOSFET circuits; battery management systems; switches;

D O I：

暂无

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 a 4.8 V tolerant circuit for reliably switching a startup load between a main power supply and a battery power supply. The circuit automatically switches the main power supply over to the battery in case the main line has been interrupted. The circuit includes a pair of back-to-back switch transistors for isolating the load from each power supply, a bias circuit for controlling the switch transistors, two independent current sources and two current subtraction units for deciding which supply to provide to the load. It consumes less than 1 mu A per input and it can supply a startup circuitry up to 50 mu A. The circuit has been implemented in a CMOS 28 nm technology, using only "low-voltage" devices and was successfully validated in the lab.

引用

页码：211 / 216

页数：6

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