A microwatt switched-capacitor voltage doubler-based voltage regulator for ultra-low power energy harvesting systems

Jarno Salomaa*, Mika Pulkkinen, Kari Halonen

*Corresponding author for this work

Research output: Contribution to journalArticleScientificpeer-review

2 Citations (Scopus)

Abstract

This paper presents an SC voltage doubler-based voltage regulator for ultra-low power energy harvesting applications. It produces a stable 1.2-V power supply, using inputs from 0.63 to 1.8 V. External compensation and an on-chip output capacitor ensure good performance even with zero load current and any load capacitance. The regulator tolerates arbitrary input ramp-ups, and is immune to blackout and brownout. A stability analysis for the regulator control loop is presented. The regulator ASIC is implemented in a 180 nm CMOS process. The measured regulator peak power and current efficiency are 63 and 49 %, respectively. The performance has been characterized with load currents from zero to (Formula presented.)A.

Original languageEnglish
Pages (from-to)347–358
Number of pages12
JournalAnalog Integrated Circuits and Signal Processing
Volume88
Issue number2
DOIs
Publication statusPublished - Aug 2016
MoE publication typeA1 Journal article-refereed

Keywords

  • Brownout
  • Energy harvesting
  • SC voltage converter
  • Start-up
  • Ultra-low power
  • Voltage regulator

Fingerprint Dive into the research topics of 'A microwatt switched-capacitor voltage doubler-based voltage regulator for ultra-low power energy harvesting systems'. Together they form a unique fingerprint.

Cite this