8
336521
Revision History
Document
Number
Revision
Number
Description
Revision
Date
336521
0.5
•
Initial release of combined power supply design guide
•
Combined CFX12V, LFX12V, ATX12V, SFX12V, and
TFX12V content into one desktop power supply design
guide
•
CFX12V content derived from revision 1.2
Updated 12V1 current for 300 W configuration
Updated efficiency loading for 300 W configuration
•
LFX12V content derived from revision 1.1
•
ATX12V content derived from revision 2.2
•
SFX12V content derived from revision 3.1
•
TFX12V content derived from revision 2.1
Updated 12V1 current for 300 W configuration
Updated efficiency loading for 300 W configuration
•
Updated Capacitive Load section to use standard capacitor
values
•
Updated 5 VSB efficiency recommendations for Digital
Office platforms
•
Removed power-down warning from power supply timing
diagram
•
Marked sections with labels to indicate REQUIRED,
RECOMMENDED, or OPTIONAL items
January
2006
1.0
•
Added 12V2 Current for Processor Configurations table
•
Added revision numbers to form factor specific chapters
June 2006
1.1
•
Removed outdated ENERGY STAR* requirements and
added some new ENERGY STAR information.
•
Updated Typical Power Distribution tables for all power
supply form factors and updated minimum loads.
•
Updated cross regulation figures.
•
Added Flex ATX power supply form factor.
•
Updated capacitive loading table.
•
Clarified over voltage and over current verbiage.
•
Added Power-up Cross Loading Condition section.
•
Other changes shown in red with change bars.
March 2007
1.2
•
and Added max of 400 mV Ripple/Noise to
PS_ON and PWR_OK signals
•
Figure 49 replaced to implement change in
dimension C
•
Added Power-down timing to Figure 4-3 and
Table 4-9: Power Supply TimingTable 4-9 (T6 > 1 ms)
•
Clarified Class D requirements. Added
additional references for EMC requirements by country
•
Section 4.5.9 Added Climate Savers Computing text
•
Updated all Cross-regulation graphs
February
2008
Summary of Contents for ATX 3.0
Page 69: ...LFX12V Specific Guidelines 2 0 336521 69 Figure 12 2 Mechanical Details...
Page 70: ...LFX12V Specific Guidelines 2 0 70 336521 Figure 12 3 PSU Slot Feature Detail...
Page 71: ...LFX12V Specific Guidelines 2 0 336521 71 Figure 12 4 Recommended Chassis Tab Feature...
Page 77: ...SFX12V Specific Guidelines 4 0 336521 77 Figure 14 3 Top Mount Fan Profile Mechanical Outline...
Page 82: ...SFX12V Specific Guidelines 4 0 82 336521 Figure 14 10 PS3 Mechanical Outline...
Page 87: ...TFX12V Specific Guidelines 3 0 336521 87 Figure 15 6 Suggested Mounting Tab chassis feature...
