SoPC based digital current-mode control of full-bridge phase-shifted DC/DC converters with fast dynamic responses

Gun Sen Ho, Chiao Chin Lin, Shin Hau Hsu, Ying-Yu Tzou

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

5 Scopus citations

Abstract

This paper proposes a SOPC (system-on-a-programmable-chip) solution for the digital current-mode control of a full-bridge phase-shifted (FB-PS) DC-DC converter to achieve fast dynamic response. The digital current-mode control scheme consists of several parts: a digital phase-shifted PWM generator to generate programmable phase-shifted PWM signals, a digital current controller, and a digital voltage controller through which an adaptive gain adjustments scheme could adjust controller parameters to achieve a fast dynamic response of the output voltage, and with a synchronous current sampling scheme to avoid switching noise and spike. The implementation of the proposed digital current-mode controller was realized by using a mixed-signal FPGA A2F200 from Microsemi SmartFusion. Experimental results are given to verify and show the feasibility of the proposed control scheme to a 800W, 400V to 12V DC-DC dc-dc converter in applications to highperformance server power supplies.

Original languageEnglish
Title of host publication2013 IEEE 10th International Conference on Power Electronics and Drive Systems, PEDS 2013
Pages113-118
Number of pages6
DOIs
StatePublished - 1 Aug 2013
Event2013 IEEE 10th International Conference on Power Electronics and Drive Systems, PEDS 2013 - Kitakyushu, Japan
Duration: 22 Apr 201325 Apr 2013

Publication series

NameProceedings of the International Conference on Power Electronics and Drive Systems

Conference

Conference2013 IEEE 10th International Conference on Power Electronics and Drive Systems, PEDS 2013
CountryJapan
CityKitakyushu
Period22/04/1325/04/13

Keywords

  • SOPC digital PWM controller
  • adaptive gain adjustments
  • digital current-mode control
  • full-bridge phase-shift DC-DC converter
  • mixed-signal FPGA

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