Current-mode converters with adjustable-slope compensating ramp

Cheng Chung Yang, Chen Yu Wang, Tai Haur Kuo

Research output: Chapter in Book/Report/Conference proceedingConference contribution

16 Citations (Scopus)

Abstract

Sub-harmonic oscillation is a well-known problem in DC/DC converters with current mode control. To avoid this problem, a method to achieve adjustable-slope compensation is proposed. This method makes the compensating ramp slope appropriate for various output voltage levels. Besides solving the sub-harmonic oscillation problem, this method can also make the system respond better due to the alleviation of the overcompensation found in the traditional method, especially at low output voltage levels. Furthermore, power-saving in the current sensor is one other advantage because only the initial inductor current value in every cycle is needed. This can improve efficiency in current mode control, which is inherently lower than voltage mode control. An integrated circuit implementation of a current mode buck converter with the proposed method was made with a standard 0.35-μm CMOS process.

Original languageEnglish
Title of host publicationAPCCAS 2006 - 2006 IEEE Asia Pacific Conference on Circuits and Systems
Pages654-657
Number of pages4
DOIs
Publication statusPublished - 2006 Dec 1
EventAPCCAS 2006 - 2006 IEEE Asia Pacific Conference on Circuits and Systems - , Singapore
Duration: 2006 Dec 42006 Dec 6

Publication series

NameIEEE Asia-Pacific Conference on Circuits and Systems, Proceedings, APCCAS

Other

OtherAPCCAS 2006 - 2006 IEEE Asia Pacific Conference on Circuits and Systems
CountrySingapore
Period06-12-0406-12-06

All Science Journal Classification (ASJC) codes

  • Electrical and Electronic Engineering

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