Intel ATX12V manual Version

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ATX12V

Power Supply Design Guide

Version 2.0

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Contents Version ATX12VImportant Information and Disclaimers Contents Mechanical SafetyEnvironmental Electromagnetic CompatibilityTables FiguresScope IntroductionIncreased +12 VDC output capability Minimum EfficiencySeparate current limit for 12V2 on the 2x2 connector Main Power ConnectorTerminology Document Title Applicable DocumentsDescription AC Input ElectricalInput Over-current Protection Inrush Current LimitingRegulatory Input Under-voltageOther Certifications and/or Declarations Catastrophic Failure Protection DC OutputDC Voltage Regulation DC Output Voltage RegulationRemote Sensing Typical Power Distribution12V power watts PowerMin Max Current Output AmpsCross Loading Graph for 300W Configuration Typical Power Distribution for a 300 W ATX12V ConfigurationCross Loading Graph for 350W Configuration Typical Power Distribution for a 350 W ATX12V ConfigurationMin Max Peak Current Output Amps Typical Power Distribution for a 400 W ATX12V ConfigurationEfficiency Power Limit / Hazardous Energy LevelsGeneral Minimum Efficiency Vs LoadLoading Table for Efficiency Measurements Other Low Power System Requirements Energy Star Input Power ConsumptionOutput Ripple/Noise Energy StarMax. Ripple & Noise MVpp DC Output Noise/RippleCapacitive Load Output Transient ResponseDC Output Transient Step Sizes Output Capacitive LoadsTiming / Housekeeping / Control 10. +5 VDC / +3.3 VDC Power SequencingClosed-loop Stability Voltage Hold-up TimePwrok Pwrok Signal CharacteristicsPSON# 3. +5 VSB PSON# Signal CharacteristicsReset after Shutdown Power-on Time8. +5 VSB at AC Power-down RisetimeOver-voltage Protection Output ProtectionShort-circuit Protection No-load OperationOutput Bypass Over-temperature ProtectionMechanical Physical DimensionsLabeling / Marking Second optional fan may go in this location Second optional Airflow / Fan DC Connectors AC Connector+5V +33V 12V+12V1 +5V Pin Signal Color ATX Main Power ConnectorPeripheral Connectors 2. +12 V Power ConnectorConnector Molex 39-01-2040 or equivalent Pin Signal AWG WireFloppy Drive Connector Serial ATA Power ConnectorWire Signal Connector AMP 171822-4 or equivalent Pin Signal AWG WireEnvironmental TemperatureThermal Shock Shipping HumidityRandom Vibration Mechanical ShockAcoustics Emissions Electromagnetic CompatibilityImmunity Magnetic Leakage Fields Input Line Current Harmonic Content and Line FlickerHarmonic Limits, Class D Equipment Component De-rating ReliabilityNorth America SafetyProscribed Materials International