Filter
Top Products
SSI
EPS2U Power Supply Design Guide, V2.1
6.4 Output Power/Currents
STATUS
Recommended
The following tables define the power and current ratings for 480 W, 550 W, 600 W, and 650 W power supplies.
The combined output power of all outputs shall not exceed the rated output power. The power supply must meet
both static and dynamic voltage regulation requirements for the minimum loading conditions.
Table 14: 480 W Load Ratings – Common Plane
Voltage Minimum Continuous Maximum Continuous Peak
+3.3 V 0.8 A 24 A
+5 V 0.5 A 20 A
+12V1 (Processors) 0 A 18 A 22 A
7
+12V2 (Baseboard) 1.0 A 18 A
-12 V 0 A 0.5 A
+5 VSB 0.1 A 2.0 A
1. Maximum continuous total DC output power should not exceed 480 W.
2. Maximum continuous combined load on +3.3 VDC and +5 VDC outputs shall not exceed 115 W.
3. Maximum Peak total DC output power should not exceed 550 W.
4. Peak power and current loading shall be supported for a minimum of 1 second.
5. Maximum combined current for the 12 V outputs shall be 32 A.
6. Maximum 12V combined peak current shall be 44A.
7. Peak +12 V1 current shall be supported for a minimum of 0.5 seconds.
Table 15: 550 W Load Ratings – Split Plane
Voltage Minimum Continuous Maximum Continuous Peak
+3.3 V 0.8 A 24 A
+5 V 0.5 A 20 A
+12V1 0 A 10.5 A 12 A
+12V2 0 A 10.5 A 12 A
+12V3 0.9 A 14 A
+12V4 0.1 A 8.0 A 13 A
-12 V 0 A 0.5 A
+5 VSB 0.1 A 2.0 A
1. Maximum continuous total DC output power should not exceed 550 W.
2. Maximum continuous combined load on +3.3 VDC and +5 VDC outputs shall not exceed 140 W.
3. Maximum peak total DC output power should not exceed 630 W.
4. Peak power and current loading shall be supported for a minimum of 1 second.
5. Maximum combined current for the 12 V outputs shall be 38 A.
6. Peak current for the combined 12 V outputs shall be 45 A.
- 17 -