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Intel ATX12V manual 4.5.2. +12 V Power Connector, Peripheral Connectors

Models: ATX12V

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ATX12V Power Supply Design Guide

Version 2.0

4.5.2. +12 V Power Connector

Connector: MOLEX 39-01-2040 or equivalent

(Mating motherboard connector is Molex 39-29-9042 or equivalent)

Signal

18 AWG Wire

1COMBlack

2COMBlack

Signal

18 AWG Wire

3+12V2DC Yellow /Black Stripe

4+12V2DC Yellow/ Black Stripe

4.5.3. Peripheral Connector(s)

Connector: AMP 1-480424-0 or MOLEX 8981-04P or equivalent.

Contacts: AMP 61314-1 or equivalent.

Pin	Signal	18 AWG Wire

1	+12V1DC	Yellow

2	COM	Black

3	COM	Black

4	+5VDC	Red

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Intel manual 4.5.2. +12 V Power Connector, Peripheral Connectors, ATX12V Power Supply Design Guide Version

Contents

Version ATX12V Power Supply Design GuideIMPORTANT INFORMATION AND DISCLAIMERS Electrical ContentsIntroduction Applicable Documents6. Electromagnetic Compatibility Safety4. Mechanical 5. EnvironmentalTables ATX12V Power Supply Design Guide VersionFigures 1.2.2. Minimum Efficiency 1. Introduction1.1. Scope 1.2.1. Increased +12 VDC output capability1.3 Terminology 1.2.3. Main Power Connector1.2.4. Separate current limit for 12V2 on the 2x2 connector Description 2. Applicable DocumentsDocument Title 3.1.2. Inrush Current Limiting 3. Electrical3.1. AC Input 3.1.1. Input Over-current ProtectionELECTROMAGNETIC CAMPATIBILITY 3.1.3. Input Under-voltage3.1.4. Regulatory PRODUCT SAFETY3.2.1. DC Voltage Regulation 3.2. DC Output3.1.5. Catastrophic Failure Protection 3.2.2. Remote Sensing 3.2.3. Typical Power DistributionFigure 1. Cross Loading Graph for 250W Configuration 3.2.3.1. ATX12V ConfigurationsTable 3. Typical Power Distribution for a 250 W ATX12V Configuration Figure 2. Cross Loading Graph for 300W Configuration Table 4. Typical Power Distribution for a 300 W ATX12V ConfigurationFigure 3. Cross Loading Graph for 350W Configuration Table 5. Typical Power Distribution for a 350 W ATX12V ConfigurationFigure 4. Cross Loading Graph for 400W Configuration Table 6. Typical Power Distribution for a 400 W ATX12V ConfigurationTable 7. Minimum Efficiency Vs Load 3.2.4. Power Limit / Hazardous Energy Levels3.2.5. Efficiency 3.2.5.1. GeneralTable 8. Loading Table for Efficiency Measurements ATX12V Power Supply Design Guide3.2.5.2. Energy Star 3.2.6. Output Ripple/NoiseTable 9. Energy Star Input Power Consumption 3.2.5.3. Other Low Power System RequirementsScope Figure 5. Differential Noise Test SetupPower Supply Table 10. DC Output Noise/RippleTable 12. Output Capacitive Loads 3.2.7. Output Transient Response3.2.8. Capacitive Load Table 11. DC Output Transient Step Sizes3.2.11. Voltage Hold-up Time 3.2.10. +5 VDC / +3.3 VDC Power Sequencing3.3. Timing / Housekeeping / Control 3.2.9. Closed-loop StabilityTable 13. PWROK Signal Characteristics 3.3.1. PWROK3.3.2. PSON# Figure 7. PSON# Signal Characteristics 3.3.3. +5 VSBTable 14. PSON# Signal Characteristics 3.3.5. Risetime 3.3.4. Power-on Time3.3.7. Reset after Shutdown 3.3.8. +5 VSB at AC Power-down3.4.3. No-load Operation 3.4. Output Protection3.4.1. Over-voltage Protection 3.4.2. Short-circuit Protection3.4.6. Output Bypass 3.4.5. Over-temperature Protection4.1. Labeling / Marking 4.2. Physical Dimensions4. Mechanical Air inlet grill, 55% open area Second optional fan may go in this locationarea or on topside Second optionalfan may be located in optional venting4.3. Airflow / Fan 4.5. DC Connectors 4.4. AC ConnectorPSON# Main Power Connector4.5.1. ATX Main Power Connector ATX12V Power Supply Design Guide Version 4.5.2. +12 V Power Connector4.5.3. Peripheral Connectors Figure 11. Serial ATA Connector 4.5.4. Serial ATA Power Connector4.5.5. Floppy Drive Connector This is a required connector for systems with Serial ATA devicesHumidity TemperatureEnvironmental Thermal Shock ShippingATX12V Power Supply Design Guide Version 2.0 Final Review Copy 5.5. Mechanical Shock5.6. Random Vibration 5.7. Acoustics6.2. Immunity 6. Electromagnetic Compatibility6.1. Emissions Table 16. Harmonic Limits, Class D Equipment 6.3. Input Line Current Harmonic Content and Line Flicker6.4. Magnetic Leakage Fields 7.1. Component De-rating 7. Reliability8.1. North America 8. Safety8.3. Proscribed Materials 8.2. International