TFX12V Power Supply Design Guide
Thin Form Factor with 12 V Connector
Version 2.0
Table 4. Typical Power Distribution for 220 W TFX12V Configurations
Output
Minimum Current
(amps)
Rated Current
(amps)
Peak Current
(amps)
+12 VDC | 1.0 | 15.0 |
| 17.0 | |
+5 | VDC | 0.3 | 13.0 | (Note) |
|
+3.3 VDC | 0.5 | 17.0 | (Note) |
| |
0.0 | 0.3 |
|
| ||
+5 | VSB | 0.0 | 2.0 |
| 2.5 |
Note: Total combined output of 3.3 V and 5 V is 
80 W
Peak currents may last up to 17 seconds with not more than one occurrence per minute
220W Cross Regulation
(5V rail + 3.3V rail vs. 12V)
| 90 |
|
|
|
|
) | 80 |
|
|
|
|
a tts |
|
|
|
| |
70 |
|
|
|
| |
(w | 60 |
|
|
|
|
r |
|
|
|
| |
w e | 50 |
|
|
|
|
p o | 40 |
|
|
|
|
. 3 V |
|
|
|
| |
30 |
|
|
|
| |
+ 3 | 20 |
|
|
|
|
5 V | 10 |
|
|
|
|
| 0 |
|
|
|
|
| 0 | 50 | 100 | 150 | 200 |
Combined Power (5V rail + 3.3V rail)
12V power (watts)
Figure 3. Cross Loading Graph for 220W Configuration
14
