Intel ATX12V manual +33V 12V, +12V1 +5V

Page 33

ATX12V Power Supply Design Guide

Version 2.0

1	13
.	.
+33V.	+33V.
.	-12V
+33V.	-12V
COM	COM
+5V	PSON#
COM	COM
+5V	COM
COM	COM
CO	COM
PWR ON	NC
PWR_	NC
+5VSB	+5V
+12V1	+5V
+12V1	+5V
+3.3V.3V	COM

Main Power Connector

Figure 10. ATX12V Power Supply Connectors (Pin-side view, not to scale)

Image 33

Contents Version ATX12VImportant Information and Disclaimers Contents Mechanical SafetyEnvironmental Electromagnetic CompatibilityTables FiguresScope IntroductionIncreased +12 VDC output capability Minimum EfficiencyMain Power Connector Separate current limit for 12V2 on the 2x2 connectorTerminology Applicable Documents Document TitleDescription AC Input ElectricalInput Over-current Protection Inrush Current LimitingInput Under-voltage RegulatoryOther 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 Signal Characteristics PwrokPSON# 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 ProtectionPhysical Dimensions MechanicalLabeling / Marking Second optional fan may go in this location Second optional Airflow / Fan DC Connectors AC Connector+33V 12V +5V+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 HumidityMechanical Shock Random VibrationAcoustics Electromagnetic Compatibility EmissionsImmunity Input Line Current Harmonic Content and Line Flicker Magnetic Leakage FieldsHarmonic Limits, Class D Equipment Component De-rating ReliabilityNorth America SafetyProscribed Materials International

+33V.

-12V

+5V

+12V1

+5V

Figure 10. ATX12V Power Supply Connectors (Pin-side view, not to scale)