A Power Supply Achieving Titanium Level Efficiency for a Wide Range of Input Voltages

Werner Konrad, Gerald Josef Deboy, Annette Mütze

Research output: Contribution to journalArticlepeer-review


To achieve the highest possible grade for server or computer power supplies in terms of efficiency, various solutions for high line input already exist on the market. In this paper, a new topology is investigated closely, showing that the titanium grade may be achievable at low line input with traditional silicon devices by the utilization of low voltage mosfets, which have an excellent figure of merits, by connecting two converter stages in parallel for low line input or in series for high line input. This paper presents simulation results which are verified with measurements from a developed prototype for 1 kW of power and 12 V output consisting of a triangular current mode power factor correction followed by a well-known phase shifted zero voltage switched bridge. Furthermore, a detailed description of the loss estimation by simulation, enhanced with additional calculations, is presented.
Translated title of the contributionEin Schaltnetzteil für einen weiten Eingangsspannungsbereich und Titanium Effizienz
Original languageEnglish
Pages (from-to)117-127
Number of pages11
JournalIEEE Transactions on Power Electronics
Issue number1
Publication statusPublished - Jan 2017

Fields of Expertise

  • Information, Communication & Computing


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