ATX Version 3.0 Multi Rail Desktop Platform Power Supply
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Legal Revision History Introduction Processor Configurations PCI Express* Add-in Card Considerations Electrical Mechanical Acoustics Environmental Electromagnetic Compatibility Safety Reliability CFX12V Specific Guidelines 2.0 LFX12V Specific Guidelines 2.0 ATX12V Specific Guidelines 3.0 SFX12V Specific Guidelines 4.0 TFX12V Specific Guidelines 3.0 Flex ATX Specific Guidelines 2.0
DC Voltage Regulation – REQUIRED DC Output Current – REQUIRED Remote Sensing - RECOMMENDED Other Low Power System Requirements Output Ripple Noise - REQUIRED Capacitive Load – RECOMMENDED Closed Loop Stability - REQUIRED +5V DC / +3.3V DC Power Sequencing - REQUIRED Voltage Hold-Up Time - REQUIRED 12V2 DC Minimum Loading - REQUIRED
Over Voltage Protection (OVP) – REQUIRED Short Circuit Protection (SCP) – REQUIRED No-Load Situation – REQUIRED Over Current Protection (OCP) – REQUIRED Over Temperature Protection (OTP) – REQUIRED Output Bypass – REQUIRED Separate Current Limit for 12V2 - OPTIONAL Overall Power Supply Efficiency Levels Power Supply Efficiency for Energy Regulations - ENERGY STAR* and CEC (California Energy Commission) PC Computers with High Expandability Score - RECOMMENDED
SFX12V Specific Guidelines 4.0 Lower Profile Package - Physical Dimensions - REQUIRED Fan Requirements - REQUIRED Top Fan Mount Package - Physical Dimensions -REQUIRED Fan Requirements - REQUIRED Reduced Depth Top Mount Fan - Physical Fan Requirements - REQUIRED Standard SFX Profile Package – Physical Dimensions - REQUIRED Fan Requirements - REQUIRED PS3 Form Factor-Physical Dimensions - REQUIRED Fan Requirements - REQUIRED
Reset After Shutdown
If the power supply latches into a shutdown state because of a fault condition on its outputs, the power supply shall return to normal operation only after the fault has been removed and the PS_ON# has been cycled OFF/ON with a minimum OFF time of one second.