ATX/ATX12V Power Supply Design Guide
Version 1.1
Page 5
Figures
Figure 1. Differential Noise Test Setup .................................................................................................
15
Figure 2. Power Supply Timing .............................................................................................................
17
Figure 3. PS_ON# Signal Characteristics .............................................................................................
19
Figure 4. Power Supply Dimensions for Chassis in Which the P/S Does Not Cool Processor ............
23
Figure 5. Power Supply Dimensions for Chassis in Which the P/S Cools the Processor.....................
24
Figure 6. ATX and ATX12V Power Supply Connectors ........................................................................
27
Tables
Table 1. Power Supply Feature Summary, ATX versus ATX12V .........................................................
7
Table 2. AC Input Line Requirements ...................................................................................................
9
Table 3. DC Output Voltage Regulation................................................................................................
10
Table 4. Typical Power Distribution for a 160 W ATX Configuration ....................................................
11
Table 5. Typical Power Distribution for a 200 W ATX Configuration ....................................................
12
Table 6. Typical Power Distribution for a 250 W ATX Configuration ....................................................
12
Table 7. Typical Power Distribution for a 300 W ATX Configuration ....................................................
12
Table 8. Typical Power Distribution for a 200 W ATX12V Configuration ..............................................
13
Table 9. Typical Power Distribution for a 250 W ATX12V Configuration ..............................................
13
Table 10. Typical Power Distribution for a 300 W ATX12V Configuration ............................................
14
Table 11. DC Output Noise/Ripple........................................................................................................
15
Table 12. DC Output Transient Step Sizes ...........................................................................................
16
Table 13. Output Capacitive Loads.......................................................................................................
16
Table 14. PWR_OK Signal Characteristics ..........................................................................................
18
Table 15. PS_ON# Signal Characteristics ............................................................................................
18
Table 16. Overvoltage Protection..........................................................................................................
20
