A high-performance current-mode DC-DC buck converter with adaptive clock control technique

You Te Chiu, Yu Hsuan Liu, Chung-Chih Hung

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

3 Scopus citations

Abstract

This paper presents a high-efficiency and fast-transient current-mode DC-DC buck converter using adaptive clock controller (ACC). The proposed technique can dynamically and smoothly adjust the switching frequency during the transient response to improve the undershoot, overshoot voltage, and recovery time. In this work, only an output inductor, capacitor, and feedback resistors are outside the chip. The circuit was fabricated by using 0.35μm TSMC CMOS process. The input voltage is 5V and the output voltage is 3.3V. The transient recovery time and undershoot voltage are less than 6μs and 60mV, respectively, for the load current change from 50mA to 300mA. The maximum conversion efficiency is 94% at 100mA load current. Above 85% conversion efficiency can be achieved for load current from 40mA to 500mA. With the proposed techniques, the performance of the DC-DC converter is improved significantly.

Original languageEnglish
Title of host publication2018 International Symposium on VLSI Design, Automation and Test, VLSI-DAT 2018
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages1-4
Number of pages4
ISBN (Electronic)9781538642603
DOIs
StatePublished - 5 Jun 2018
Event2018 International Symposium on VLSI Design, Automation and Test, VLSI-DAT 2018 - Hsinchu, Taiwan
Duration: 16 Apr 201819 Apr 2018

Publication series

Name2018 International Symposium on VLSI Design, Automation and Test, VLSI-DAT 2018

Conference

Conference2018 International Symposium on VLSI Design, Automation and Test, VLSI-DAT 2018
CountryTaiwan
CityHsinchu
Period16/04/1819/04/18

Keywords

  • adaptive clock control
  • current-mode
  • DC-DC converter
  • high-performance
  • transient response

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