An 80 mV startup dual-mode boost converter by charge-pumped pulse generator and threshold voltage tuned oscillator with hot carrier injection

Po-Hung Chen*, Xin Zhang, Koichi Ishida, Yasuyuki Okuma, Yoshikatsu Ryu, Makoto Takamiya, Takayasu Sakurai

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

41 Scopus citations

Abstract

This paper presents an 80 mV startup-voltage dual-mode boost converter for energy harvesting applications. The charge-pumped pulse generator enables a startup operation of the boost converter from the input voltage of 80 mV. The threshold voltage tuned oscillator for the clock generator of the boost converter compensates for the die-to-die process variation by a hot carrier injection (HCI), thereby reducing the minimum operation voltage (VDDMIN) of the clock generator by 45% with a trimming time of 10 minutes. The proposed step-up converter achieves the lowest startup voltage without using a mechanical switch or a large transformer.

Original languageEnglish
Article number6298946
Pages (from-to)2554-2562
Number of pages9
JournalIEEE Journal of Solid-State Circuits
Volume47
Issue number11
DOIs
StatePublished - 18 Sep 2012

Keywords

  • Charge-pumped pulse generator
  • dual-mode boost converter
  • energy harvesting
  • hot carrier injection
  • low voltage
  • startup
  • V -tuned oscillator

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