A 25 mV-startup cold start system with on-chip magnetics for thermal energy harvesting
Name
ESSCIRC 1329 updated.pdf
Size
1.88 MB
Format
Adobe PDF
Checksum (MD5)
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Author(s)
Garcha, Preetinder Kaur
El-Damak, Dina
Desai, Nachiket
Troncoso, Jorge
Mazotti, Erika
Mullenix, Joyce
Tang, Shaoping
Trombley, Django
Bluss, Dennis
Lang, Jeffrey H
Date Issued
September 2017
Journal
43rd IEEE European Solid State Circuits Conference
Publisher
IEEE
Citation
Garcha, Preet, et al. "A 25 mV-startup cold start system with on-chip magnetics for thermal energy harvesting." 43rd IEEE European Solid State Circuits Conference, September 2017, Leuven, Belgium, IEEE
Version
Author's final manuscript
Abstract
Thermal energy harvesting systems use boost converters for high-efficiency low voltage operation, but lack the ability for low voltage startup without off-chip transformers. We present a cold start system that uses integrated magnetics instead of external transformers in a Meissner Oscillator to start up from ultra low voltages, with a switched capacitor DC-DC circuit for additional voltage gain. The oscillator analysis with on-chip magnetics allows device co-optimization for low voltage operation, despite 1000x lower inductance values than off-chip transformers. Co-optimized on-chip transformer and depletion-mode NMOS start up from 25 mV driven directly by a sourcemeter, or 50 mV with a 4.7 Ω series resistance, for the lowest integrated electrical startup. The co-packaged system provides proof of concept for integration with boost converter circuits on a single die to have a fully-integrated low voltage startup solution for thermal energy harvesting applications, without using off-chip transformers.
MIT Department
Massachusetts Institute of Technology. Department of Electrical Engineering and Computer Science
Terms of Use
Creative Commons Attribution-Noncommercial-Share Alike
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DOI of Published Version
https://doi.org/10.1109/esscirc.2017.8094542
