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500 W Server Power Supply

This reference design provides design guide, data and other contents of 500 W server power supply using continuous current mode PFC and LLC DC-DC converter.

Simple block diagram of 500 W server power supply.
Simple Block Diagram
Efficiency curves of 500 W server power supply.
Efficiency Curves

Description

Input voltage AC 90 to 264 V
Output voltage DC 12 V
Output power 500 W
Circuit topology Continuous Current Mode PFC, LLC (Half-Bridge) + Synchronous Rectification, Oring Circuit for Output

Features

Photo of 500 W server power supply.
  • 1 U rack size and high efficiency power supply
  • Total efficiency:93 % (Vin = 230 V at 100 % load)
  • Outline size:240 mm x 135 mm x 40 mm
  • Provides appropriate power devices(MOSFET and SiC diode) and photocouplers totally

Reference design files

Design, Document

“Design・Document” contains the documents listed below.

Name

Design, File

“Design・File” 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.

Toshiba items

Part Number Device Category Portion Usage Description

TK090A65Z

MOSFET

PFC・1

DTMOSVI/650 V/90 mΩ (max) @VGS = 10 V/TO-220SIS

TRS6E65F

SiC schotkky barrier diode

PFC・1

Second generation/650 V/6 A/TO-220-2L

TK20A60W5

MOSFET

Primary side・2

DTMOSIV/600 V/175 mΩ (max) @VGS = 10 V/TO-220SIS

TPH1R306P1

MOSFET

Secondary side・4

U-MOSIX-H/60 V/1.28 mΩ (max) @VGS = 10 V/SOP Advance

TPHR9203PL

MOSFET

Oring・3

U-MOSIX-H/30 V/0.92 mΩ (max) @VGS = 10 V/SOP Advance

TLP785F

Photocoupler

Output voltage feedback・1

DC input/Transistor output/BVS = 5000 Vrms/DIP4(TLP785F)

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