800W Platinum Efficiency Server Power

Release time:

2023-05-24 15:48

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PROJECT INTRODUCTION
This reference design provides a low-cost server power solution. Thesystem is designed with PFC and synchronous rectifier LLC topologyusing a single Spintrol ARM4 MCU SPC1168 to control both the PFCand LLC. This solution achieves the requirements of platinumefficiency and standby power consumption standard, meets the iTHDdynamic and current sharing design requirements of full load range.which is a highly completed server power reference solution.
 
DESIGN SPECIFICATION
Input Voltage 90Vac~264Vac
Output Voltage 12Vdc
Rated Power 800W
System Efficiency 94%ahalf load,92%afull load
PF >0.99
Switching Frequency PFC:65KHz LLC:80-350KHz

 

FEATURES

· Single ARM4 MCU design, most cost effitive;

· Meets 80+ Platinum efficiency standards and PF & iTHD requirements

· Compatible with AC&DC input;

· Active current sharing;

· Full protection,including input UVLO&OCP, output OVP&OCP and shortcircuit protection;

 

MAIN TOPOLOGY

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MAIN DEVICES
 
Function Part Number Brand
Input Fuse 0487020MXEP Littelfuse
Input Rectifier Bridge GB]2508 HY
PFC Current Sensor MCA1101-20-5 Aceinna
PFC MOSFET SRC60R090BT Sanrise
PFC Diode G4HO6510AT GlobalPower
PFC MOs Driver IX4340N IXYS
LLC Primary MOSFET SRC60R140BTC-E Sanrise
LLC Primary Mos Driver NSI6602B-DSPNR Novosense
LLC Secondary MOSFET PDC3094X Potems
LLC Secondary Mos Driver IXDN609SIA IXYS

 

 MEASUREMENT RESULTS AND WAVEFORMS

 

picEfficiency curve @ 220Vac input

picPF curve

 

 

piciTHD

picFull load start up

 

 

picFull load start-up @163Vdc input

pic12Vsb stand-by and short circuit protection

 

 

picOutput voltage ripple 103mV @no load

picOutput voltage ripple 11 6mV @full load

 

 

pic12VDC main output OVP protection 13.5V

pic12Vdc main output short circuit protection

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800W Platinum Efficiency Server Power

2023-05-24