Publication: A fully integrated battery-connected switched-capacitor 4:1 voltage regulator with 70% peak efficiency using bottom-plate charge recycling
Open/View Files
Date
2016-02-24
Published Version
Journal Title
Journal ISSN
Volume Title
Publisher
The Harvard community has made this article openly available. Please share how this access benefits you.
Citation
Tong, Tao, Xuan Zhang, Wonyoung Kim, Brooks, D., and Gu-Yeon Wei. 2013. "A fully integrated battery-connected switched-capacitor 4:1 voltage regulator with 70% peak efficiency using bottom-plate charge recycling," In the Proceedings of Custom Integrated Circuits Conference (CICC13), San Jose, CA, September 22-25, 2013. doi:10.1109/CICC.2013.6658485
Research Data
Abstract
This work presents a switched-capacitor (SC) DC-DC voltage regulator that converts a 3.7V battery voltage down to ~0.8V in order to power the `brain' SoC of a flapping-wing microrobotic bee. A cascade of two 2:1 SC converters offers high efficiency for a 4:1 conversion ratio. A charge recycling technique reduces the flying capacitor's bottom-plate parasitic loss by 50% and overall conversion efficiency reaches 70%. The output droop is less than 10% of the nominal output voltage for a worst-case 47mA load step.
Description
Other Available Sources
Keywords
Terms of Use
Metadata Only