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A Practical Approach to the Design of a Highly Efficient PSFB DC-DC Converter for Server Applications

Author

Listed:
  • Manuel Escudero

    (Infineon Technologies Austria AG, Siemenstraße 2, 9500 Villach, Austria
    Department of Electronics and Computers Technology, University of Granada, 18071 Granada, Spain)

  • Matteo-Alessandro Kutschak

    (Infineon Technologies Austria AG, Siemenstraße 2, 9500 Villach, Austria)

  • David Meneses

    (Infineon Technologies Austria AG, Siemenstraße 2, 9500 Villach, Austria)

  • Noel Rodriguez

    (Department of Electronics and Computers Technology, University of Granada, 18071 Granada, Spain)

  • Diego P. Morales

    (Department of Electronics and Computers Technology, University of Granada, 18071 Granada, Spain)

Abstract

The phase shift full bridge (PSFB) is a widely known isolated DC-DC converter topology commonly used in medium to high power applications, and one of the best candidates for the front-end DC-DC converter in server power supplies. Since the server power supplies consume an enormous amount of power, the most critical issue is to achieve high efficiency. Several organizations promoting electrical energy efficiency, like the 80 PLUS, keep introducing higher efficiency certifications with growing requirements extending also to light loads. The design of a high efficiency PSFB converter is a complex problem with many degrees of freedom which requires of a sufficiently accurate modeling of the losses and of efficient design criteria. In this work a losses model of the converter is proposed as well as design guidelines for the efficiency optimization of PSFB converter. The model and the criteria are tested with the redesign of an existing reference PSFB converter of 1400 W for server applications, with wide input voltage range, nominal 400 V input and 12 V output; achieving 95.85% of efficiency at 50% of the load. A new optimized prototype of PSFB was built with the same specifications, achieving a peak efficiency of 96.68% at 50% of the load.

Suggested Citation

  • Manuel Escudero & Matteo-Alessandro Kutschak & David Meneses & Noel Rodriguez & Diego P. Morales, 2019. "A Practical Approach to the Design of a Highly Efficient PSFB DC-DC Converter for Server Applications," Energies, MDPI, vol. 12(19), pages 1-36, September.
    • Handle: RePEc:gam:jeners:v:12:y:2019:i:19:p:3723-:d:272048
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    References listed on IDEAS

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    1. Lei Zhao & Haoyu Li & Yuan Liu & Zhenwei Li, 2015. "High Efficiency Variable-Frequency Full-Bridge Converter with a Load Adaptive Control Method Based on the Loss Model," Energies, MDPI, vol. 8(4), pages 1-27, April.
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    Cited by:

    1. Dorin Petreus & Radu Etz & Toma Patarau & Ionut Ciocan, 2020. "Comprehensive Analysis of a High-Power Density Phase-Shift Full Bridge Converter Highlighting the Effects of the Parasitic Capacitances," Energies, MDPI, vol. 13(6), pages 1-20, March.
    2. Jun-Mo Kim & Jeong Lee & Kyung Ryu & Chung-Yuen Won, 2020. "Power Device Temperature-Balancing Control Method for a Phase-Shift Full-Bridge Converter," Energies, MDPI, vol. 13(7), pages 1-14, April.
    3. Baihui Gong & Kan Liu & Haozhe Luan & Jiaming Wu & Jing Zhou & Shilin Tan & Chao Huang & Huajiang Wu, 2023. "Design of a Dynamic Hybrid Compensator for Current Sharing Control of Parallel Phase-Shifted Full-Bridge Converter," Energies, MDPI, vol. 16(5), pages 1-22, February.
    4. Kornel Wolski & Piotr Grzejszczak & Marek Szymczak & Roman Barlik, 2021. "Closed-Form Formulas for Automated Design of SiC-Based Phase-Shifted Full Bridge Converters in Charger Applications," Energies, MDPI, vol. 14(17), pages 1-25, August.

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