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Intel ATX12V manual Input Under-voltage, Regulatory, Product Safety, Electromagnetic Campatibility

Models: ATX12V

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ATX12V Power Supply Design Guide

Version 2.0

3.1.3. Input Under-voltage

The power supply shall contain protection circuitry such that the application of an input voltage below the minimum specified in Section 3.1, Table 1, shall not cause damage to the power supply.

3.1.4. Regulatory

The power supply is required to be tested and comply with the most current version of the following regulatory specification requirements and/or standards

PRODUCT SAFETY

UL* 60950, 3rd Edition –CAN/CSA-C22.2-60950-00,

EN*60 950, 3rd Edition

IEC*60 950, 3rd Edition (CB Report to include all national deviations)

EU* Low Voltage Directive (73/23/EEC) (CE Compliance)

GB4943-90 CCIB* (China)

ELECTROMAGNETIC CAMPATIBILITY

FCC*, Class B, Part 15 (Radiated & Conducted Emissions)

CISPR* 22 / EN55022, 3rd Edition (Radiated & Conducted Emissions)

EN55024 (ITE Specific Immunity)

EN 61000-4-2 – Electrostatic Discharge

EN 61000-4-3– Radiated RFI Immunity

EN 61000-4-4– Electrical Fast Transients.

EN 61000-4-5 – Electrical Surge

EN 61000-4-6 – RF Conducted

EN 61000-4-8 – Power Frequency Magnetic Fields

EN 61000-4-11 – Voltage Dips, Short Interrupts and Fluctuations

EN61000-3-2 (Harmonics)

EN61000-3-3 (Voltage Flicker)

EU EMC Directive ((8/9/336/EEC) (CE Compliance)

Other Certifications and/or Declarations

GB925 (China/CCC*), CNS13438 (Taiwan/BSMI*),

AS/NZ3548 (Australia/C-tick* based on CISPR22)

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Intel ATX12V manual Input Under-voltage, Regulatory, Product Safety, Electromagnetic Campatibility

Contents

ATX12V Power Supply Design Guide VersionIMPORTANT INFORMATION AND DISCLAIMERS Applicable Documents ContentsIntroduction Electrical5. Environmental Safety4. Mechanical 6. Electromagnetic CompatibilityFigures ATX12V Power Supply Design Guide VersionTables 1.2.1. Increased +12 VDC output capability 1. Introduction1.1. Scope 1.2.2. Minimum Efficiency1.2.4. Separate current limit for 12V2 on the 2x2 connector 1.2.3. Main Power Connector1.3 Terminology Document Title 2. Applicable DocumentsDescription 3.1.1. Input Over-current Protection 3. Electrical3.1. AC Input 3.1.2. Inrush Current LimitingPRODUCT SAFETY 3.1.3. Input Under-voltage3.1.4. Regulatory ELECTROMAGNETIC CAMPATIBILITY3.1.5. Catastrophic Failure Protection 3.2. DC Output3.2.1. DC Voltage Regulation 3.2.3. Typical Power Distribution 3.2.2. Remote SensingTable 3. Typical Power Distribution for a 250 W ATX12V Configuration 3.2.3.1. ATX12V ConfigurationsFigure 1. Cross Loading Graph for 250W Configuration Table 4. Typical Power Distribution for a 300 W ATX12V Configuration Figure 2. Cross Loading Graph for 300W ConfigurationTable 5. Typical Power Distribution for a 350 W ATX12V Configuration Figure 3. Cross Loading Graph for 350W ConfigurationTable 6. Typical Power Distribution for a 400 W ATX12V Configuration Figure 4. Cross Loading Graph for 400W Configuration3.2.5.1. General 3.2.4. Power Limit / Hazardous Energy Levels3.2.5. Efficiency Table 7. Minimum Efficiency Vs LoadATX12V Power Supply Design Guide Table 8. Loading Table for Efficiency Measurements3.2.5.3. Other Low Power System Requirements 3.2.6. Output Ripple/NoiseTable 9. Energy Star Input Power Consumption 3.2.5.2. Energy StarTable 10. DC Output Noise/Ripple Figure 5. Differential Noise Test SetupPower Supply ScopeTable 11. DC Output Transient Step Sizes 3.2.7. Output Transient Response3.2.8. Capacitive Load Table 12. Output Capacitive Loads3.2.9. Closed-loop Stability 3.2.10. +5 VDC / +3.3 VDC Power Sequencing3.3. Timing / Housekeeping / Control 3.2.11. Voltage Hold-up Time3.3.2. PSON# 3.3.1. PWROKTable 13. PWROK Signal Characteristics Table 14. PSON# Signal Characteristics 3.3.3. +5 VSBFigure 7. PSON# Signal Characteristics 3.3.8. +5 VSB at AC Power-down 3.3.4. Power-on Time3.3.7. Reset after Shutdown 3.3.5. Risetime3.4.2. Short-circuit Protection 3.4. Output Protection3.4.1. Over-voltage Protection 3.4.3. No-load Operation3.4.5. Over-temperature Protection 3.4.6. Output Bypass4. Mechanical 4.2. Physical Dimensions4.1. Labeling / Marking Second optional fan may go in this location Air inlet grill, 55% open areain optional venting Second optionalfan may be located area or on topside4.3. Airflow / Fan 4.4. AC Connector 4.5. DC ConnectorsMain Power Connector PSON#4.5.1. ATX Main Power Connector 4.5.3. Peripheral Connectors 4.5.2. +12 V Power ConnectorATX12V Power Supply Design Guide Version This is a required connector for systems with Serial ATA devices 4.5.4. Serial ATA Power Connector4.5.5. Floppy Drive Connector Figure 11. Serial ATA ConnectorThermal Shock Shipping TemperatureEnvironmental Humidity5.7. Acoustics 5.5. Mechanical Shock5.6. Random Vibration ATX12V Power Supply Design Guide Version 2.0 Final Review Copy6.1. Emissions 6. Electromagnetic Compatibility6.2. Immunity 6.4. Magnetic Leakage Fields 6.3. Input Line Current Harmonic Content and Line FlickerTable 16. Harmonic Limits, Class D Equipment 7. Reliability 7.1. Component De-rating8. Safety 8.1. North America8.2. International 8.3. Proscribed Materials