Adaptive on-chip power supply with robust one-cycle control technique

Dongsheng Ma, Janet Wang, Minkyu Song

Research output: Contribution to journalArticlepeer-review

7 Scopus citations

Abstract

In this paper, an integrated adaptive-output switching converter is proposed. The design employs a one-cycle control for fast line regulation and a single outer loop for tight load regulation and fine tuning. A switched-capacitor integrator is introduced to the one-cycle control to obtain positive integration with a single positive power supply, allowing a standard low-cost CMOS fabrication process. To improve the efficiency, a dynamic loss control technique is presented. The converter was designed and fabricated with 0.35 μm N-well CMOS process. With a supply voltage of 3 V, a voltage ripple of less than ± 20 mV is measured. The maximum efficiency is 92% with a load power of 475 mW. The converter exhibits a tracking speed of 23.75 μs/V for both start-up and reference voltage transitions. The recovery time for a 20% load change is approximately 9.5 μs.

Original languageEnglish (US)
Article number4595674
Pages (from-to)1240-1243
Number of pages4
JournalIEEE Transactions on Very Large Scale Integration (VLSI) Systems
Volume16
Issue number9
DOIs
StatePublished - Sep 1 2008

Keywords

  • Adaptive output
  • Dynamic voltage scaling
  • One-cycle control
  • Switching converter

ASJC Scopus subject areas

  • Software
  • Hardware and Architecture
  • Electrical and Electronic Engineering

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