A 190 nA Bias Current 10 mV Input Multistage Boost Regulator With Intermediate-Node Control to Supply RF Blocks in Self-Powered Wireless Sensors
| Autor: | Saibal Mukhopadhyay, Khondker Zakir Ahmed |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
Engineering
Low-dropout regulator business.industry 020209 energy Voltage divider Electrical engineering Biasing 02 engineering and technology Voltage regulator CMOS Dropout voltage Boost converter 0202 electrical engineering electronic engineering information engineering Electronic engineering Electrical and Electronic Engineering business Voltage |
| Zdroj: | IEEE Transactions on Power Electronics. 31:1322-1333 |
| ISSN: | 1941-0107 0885-8993 |
| DOI: | 10.1109/tpel.2015.2423666 |
| Popis: | Self-powered wireless sensors require power delivery systems capable of harvesting from very low input voltage while consuming minimal bias current. This paper presents a multistage boost regulator capable of generating 3 V to supply RF blocks in self-powered wireless sensors from 10 mV input voltage. The bias power consumption is minimized using automated bias gating. The efficiency of the multistage conversion at a high conversion ratio is enhanced through the regulation and control of the intermediate-node voltage. A test chip, fabricated in 130 nm CMOS, demonstrates functional operation from as low as 10 mV input and consumes 190 nA bias current. Single-stage boost regulator demonstrates Peak efficiency of 89%, while the cascaded two stage peaks at 72%. In the cascaded system, the variable intermediate-node voltage operation shows up to 9% efficiency improvement over fixed intermediate-node voltage when operating at high conversion ratio. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|