200 W Active Clamp Forward 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 200 W active clamp forward DC-DC converter.
TPN5900CNH TPH3300CNH TPH9R00CQH TPH9R00CQH TLP785

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Features

  • Total efficiency : 90.8 % (Vin = 48 V, 100 % load)
  • Outline size : 130 mm x 115 mm x 30 mm (excluding input and output terminals on backside)
  • Uses optimum power MOSFETs and photocoupler

Description

Input voltage DC 38.5 to 60 V
Output voltage DC 24 V
Output power 10 to 200 W
Circuit topology Active Clamp Forward ＋ Synchronous Rectification
Efficiency curves of 200 W active clamp forward 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 main switch・1 N-ch MOSFET, 150 V, 0.033 Ω@10V, SOP Advance, U-MOSⅧ-H
Power MOSFET (N-ch single 60V<VDSS≤150V) Secondary-side・4 N-ch MOSFET, 150 V, 0.009 Ω@10V, SOP Advance / SOP Advance(N), U-MOSⅩ-H
Power MOSFET (N-ch single 60V<VDSS≤150V) Primary-side clamp switch・1 N-ch MOSFET, 150 V, 0.059 Ω@10V, TSON Advance, U-MOSⅧ-H

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