A Single-Inductor Dual-Ouput (SIDO) DC-DC Converter for Implantable Medical Devices in 180nm Standard CMOS Process

Pei Chun Liao, Yi Lun Chen, Po-Hung Chen

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

2 Scopus citations

Abstract

In this paper, a single-inductor dual-output (SIDO) buck converter is developed for implantable medical devices. The stacked power stage with startup circuit is designed to avoid overstress issue in 180nm CMOS process for 3.4 V to 5 V battery input. The converter provides two regulated outputs for the charge pump (V OUT 1=3 V) and the digital circuits (V OUT 2=2\ V) with low cross regulation with pulse-skip modulation. An adaptive on-time (AOT) circuit adjusts on time dynamically based on the input voltage (VIN) to obtain high conversion efficiency and low output voltage ripple under different VIN. The measurement results demonstrates that the proposed converter achieves peak efficiency of 93.6% with an available input voltage of 3.4 V to 5 V.

Original languageEnglish
Title of host publication2018 25th IEEE International Conference on Electronics Circuits and Systems, ICECS 2018
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages601-604
Number of pages4
ISBN (Electronic)9781538695623
DOIs
StatePublished - 17 Jan 2019
Event25th IEEE International Conference on Electronics Circuits and Systems, ICECS 2018 - Bordeaux, France
Duration: 9 Dec 201812 Dec 2018

Publication series

Name2018 25th IEEE International Conference on Electronics Circuits and Systems, ICECS 2018

Conference

Conference25th IEEE International Conference on Electronics Circuits and Systems, ICECS 2018
CountryFrance
CityBordeaux
Period9/12/1812/12/18

Keywords

  • adaptive on-time (AOT)
  • buck converter
  • soft start-up
  • transistors stacking

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