Fully-integrated on-chip DC-DC converter with a 450X output range

Sudhir S. Kudva, Ramesh Harjani

Research output: Contribution to journalArticlepeer-review

82 Scopus citations

Abstract

This paper presents a technique to efficiently supply power over a wide power range using a fully-integrated on-chip converter for dynamic voltage scaling (DVS) based applications. All components, including filter elements, are integrated on-chip. To achieve high efficiency the converter adaptively switches between different modes of operation by detecting the output current. The design, implemented in IBM 130 nm CMOS technology, achieves a peak efficiency of 77% at reduced temperature of 8°C and has a maximum efficiency of 74.5% under normal operating conditions. The converter supplies power over a 450X output power range (0.6 mW to 266 mW). To the best of our knowledge, this is the largest reported power range for a high-efficiency, fully-integrated on-chip power converter to date.

Original languageEnglish (US)
Article number5892903
Pages (from-to)1940-1951
Number of pages12
JournalIEEE Journal of Solid-State Circuits
Volume46
Issue number8
DOIs
StatePublished - Aug 1 2011

Keywords

  • Dynamic voltage scaling
  • frequency scaling
  • fully-integrated DC-DC converter
  • switch scaling
  • wide output power range

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