Design of a switching mode power supply with UPS features

D. K.W. Cheng, Hung Fat Frank Leung

Research output: Chapter in book / Conference proceedingConference article published in proceeding or bookAcademic researchpeer-review

3 Citations (Scopus)

Abstract

The proposed circuit integrates a flyback converter and a buck converter to provide a switch-mode power supply (SMPS) with uninterruptible power supply (UPS) features. It can accept a high voltage of main power input and a low voltage of backup battery input. It uses ONE PWM IC-controller for the normal and backup modes of operation so that it does not require a synchronization and a detection circuit for power failure. Therefore, the cost and circuit size will be reduced together. High efficiency can be obtained due to the use of a single DC-DC conversion topology from input to output over the conventional UPS. It can also provide full isolation among the high voltage main power input, the low voltage backup battery input and the voltage output. The prototype circuit was built, and the circuit operation and the experimental results of this converter are presented.
Original languageEnglish
Title of host publicationIEEE Region 10 Annual International Conference, Proceedings/TENCON
PublisherIEEE
Pages444-447
Number of pages4
Publication statusPublished - 1 Dec 1995
EventProceedings of the 1995 IEEE Region 10 International Conference on Microelectronics and VLSI, TENCON'95 - Hong Kong, Hong Kong
Duration: 6 Nov 199510 Nov 1995

Conference

ConferenceProceedings of the 1995 IEEE Region 10 International Conference on Microelectronics and VLSI, TENCON'95
Country/TerritoryHong Kong
CityHong Kong
Period6/11/9510/11/95

ASJC Scopus subject areas

  • Computer Science Applications
  • Electrical and Electronic Engineering

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