1 kW Full-Bridge DC-DC Converter

This reference design provides design guide, data and other contents of 1 kW server power supply using phase shifetd full-bridge DC-DC converter.

Exterior photo of 1 kW full-bridge DC-DC converter.
TPH2R408QM TPH2R408QM TPH2R408QM TPH2R408QM TPH1500CNH TPH1500CNH TPH1500CNH TPH1500CNH TLP2370 TLP291(SE

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Features

  • High efficiency and high power power supply
  • Total efficiency：94.7 % (Vin = -54 V at 100 % load)
  • Outline size：207 mm x 120 mm x 45 mm
  • Provides appropriate power devices (MOSFET) and photocouplers totally

Description

Input voltage DC -36 to -60 V
Output voltage DC 54 V
Output power 1 kW
Circuit topology Phase-Shifetd Full-Bridge ＋ Synchronous Rectification
Efficiency curve of 1 kW full-bridge DC-DC converter.
Efficiency Curves

Design Documents

Design Documents contain the documents below.

Design Data

Design Data contains the contents listed below.

*1:Actual PCB was designed on CR5000BD. The other files were made from CR5000BD file.

*2:The data was generated on CR5000BD.

Used Toshiba Items

Part Number Device Category Portion Usage Description
Power MOSFET (N-ch single 60V<VDSS≤150V) Primary-side・4 N-ch MOSFET, 80 V, 0.00243 Ω@10V, SOP Advance, U-MOSⅩ-H
Power MOSFET (N-ch single 60V<VDSS≤150V) Secondary-side・8 N-ch MOSFET, 150 V, 0.0154 Ω@10V, SOP Advance, U-MOSⅧ-H
Photocoupler (photo-IC output) Communication between primary-side and secondary-side ・2 Photocoupler (photo-IC output), High-speed, 20 Mbps, 3750 Vrms, 5pin SO6
Photocoupler (phototransistor output) Output voltage feedback・1 Photocoupler (phototransistor output), DC input, 3750 Vrms, SO4

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