Reliability, Component De-rating | Intel ATX12V instruction

ATX12V Power Supply Design Guide

Version 2.0 Final Review Copy

7. Reliability

7.1. Component De-rating

The de-rating process promotes quality and high reliability. All electronic components should be designed with conservative device de-ratings for use in commercial and industrial environments.

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Intel ATX12V manual Reliability, Component De-rating

Contents

Version ATX12V Important Information and Disclaimers Contents Mechanical SafetyEnvironmental Electromagnetic Compatibility Tables Figures Scope IntroductionIncreased +12 VDC output capability Minimum Efficiency Terminology Main Power ConnectorSeparate current limit for 12V2 on the 2x2 connector Description Applicable DocumentsDocument Title AC Input ElectricalInput Over-current Protection Inrush Current Limiting Other Certifications and/or Declarations Input Under-voltageRegulatory Catastrophic Failure Protection DC OutputDC Voltage Regulation DC Output Voltage Regulation Remote Sensing Typical Power Distribution 12V power watts PowerMin Max Current Output Amps Cross Loading Graph for 300W Configuration Typical Power Distribution for a 300 W ATX12V Configuration Cross Loading Graph for 350W Configuration Typical Power Distribution for a 350 W ATX12V Configuration Min Max Peak Current Output Amps Typical Power Distribution for a 400 W ATX12V Configuration Efficiency Power Limit / Hazardous Energy LevelsGeneral Minimum Efficiency Vs Load Loading Table for Efficiency Measurements Other Low Power System Requirements Energy Star Input Power ConsumptionOutput Ripple/Noise Energy Star Max. Ripple & Noise MVpp DC Output Noise/Ripple Capacitive Load Output Transient ResponseDC Output Transient Step Sizes Output Capacitive Loads Timing / Housekeeping / Control 10. +5 VDC / +3.3 VDC Power SequencingClosed-loop Stability Voltage Hold-up Time PSON# Pwrok Signal CharacteristicsPwrok 3. +5 VSB PSON# Signal Characteristics Reset after Shutdown Power-on Time8. +5 VSB at AC Power-down Risetime Over-voltage Protection Output ProtectionShort-circuit Protection No-load Operation Output Bypass Over-temperature Protection Labeling / Marking Physical DimensionsMechanical Second optional fan may go in this location Second optional Airflow / Fan DC Connectors AC Connector +12V1 +5V +33V 12V+5V Pin Signal Color ATX Main Power Connector Peripheral Connectors 2. +12 V Power ConnectorConnector Molex 39-01-2040 or equivalent Pin Signal AWG Wire Floppy Drive Connector Serial ATA Power ConnectorWire Signal Connector AMP 171822-4 or equivalent Pin Signal AWG Wire Environmental TemperatureThermal Shock Shipping Humidity Acoustics Mechanical ShockRandom Vibration Immunity Electromagnetic CompatibilityEmissions Harmonic Limits, Class D Equipment Input Line Current Harmonic Content and Line FlickerMagnetic Leakage Fields Component De-rating Reliability North America Safety Proscribed Materials International