Intel ATX

6 Design Guide
Tables
Table 1-1: Conventions and Terminology .............................................................. 9
Table 1-2: Support Terminology ........................................................................ 10
Table 2-1: 12V2 Current for Processor Configurations .......................................... 11
Table 3-1: AC Input Line Requirements .............................................................. 14
Table 3-2: DC Output Voltage Regulation ........................................................... 15
Table 3-3: DC Output Transient Step Sizes ......................................................... 15
Table 3-4: Recommended System DC and AC Power Consumption ......................... 16
Table 3-5: DC Output Noise/Ripple .................................................................... 17
Table 3-6: Output Capacitive Loads ................................................................... 18
Table 3-7: 12V2 DC Minimum Current ................................................................ 19
Table 3-8: Power Supply Timing ........................................................................ 20
Table 3-9: PWR_OK Signal Characteristics .......................................................... 21
Table 3-10: PS_ON# Signal Characteristics ......................................................... 22
Table 3-11: Over Voltage Protection .................................................................. 26
Table 3-12: Efficiency Versus Load Minimum Requirements ................................... 28
Table 3-13: Low Load Efficiency Requirements Increase Over Time ........................ 28
Table 3-14: Efficiency versus Load for Energy Star* ............................................. 29
Table 3-15: Efficiency Versus Load for CEC PC Computers with High Expandability
Computers* ............................................................................................. 29
Table 4-1: Main Power Connector Pin-Out ........................................................... 32
Table 4-2: Peripheral Connector Pin-Out ............................................................. 32
Table 4-3: Floppy Connector Pin-Out ................................................................. 33
Table 4-4: PCIe* Graphics Card 6 Pin Connector Pin-Out ...................................... 33
Table 4-5: PCI-E Graphics Card 8 Pin (6+2) Connector Pin-Out.............................. 33
Table 4-6: +12 V Power 4 Pin Connector Pin-Out ................................................. 34
Table 4-7: +12 V Power 8 Pin Connector Pin-Out ................................................. 34
Table 4-8: Serial ATA* Power Connector Pin-Out ................................................. 35
Table 5-1: Recommended Power Supply Acoustic Targets ..................................... 37
Table 7-1: EMC Requirement by Country ............................................................ 40