Table 27. Dc/Dc Converters Load Ratings; Table 28. Voltage Regulation Limits - Intel SC5300BRP Technical Product Specification

Intel® Server Chassis SC5300 5U Kit TPS
(5) Combined peak current on the total +12V rails shall not exceed 58A.
(6) Peak current on the 12V4 rail shall be supported for a minimum of 500msec.
(7) All rails from the power distribution board must meet the UL energy hazard requirements.
3.3.3.8 DC/DC Converters Loading
The following table defines the power and current ratings of the three DC/DC converters located
on the power distribution board, each powered from the +12V rail. The three converters must
meet both static and dynamic voltage regulation requirements for the minimum and maximum
loading conditions.
3.3V / 5V combined power limit is 140W max.
MAX Load
MIN Static / Dynamic Load
Max Output Power, see note 1
Notes:
(1) The straight sum of the three max powers = 205.2W, but considering the 3.3/5V power limit, it may be 140W +6W
= 146W max combined power. In reality, at max load, each output voltage is allowed to sag to Vmin, so the actual
each max power will then be is: for 3.3V, 3.2Vx24A = 76.8W; for 5V, 4.8Vx24A=115.2W; and for -12V,
11.4Vx0.5A=5.7W.
(2) All rails from the power distribution board must meet the UL energy hazard requirements.
3.3.3.9 Voltage Regulation
The DC/DC converters' output voltages must stay within the following voltage limits when
operating at steady state and dynamic loading conditions. These limits include the peak-peak
ripple/noise specified. All outputs are measured with reference to the return remote sense signal
(ReturnS). The 3.3V output is measured at the 3.3 RS point, all other voltages are measured at
the output harness connectors.
Converter Output
+ 3.3VDC
+ 5VDC
+12VDC (12V1/2/3/4)
- 12VDC
Revision 1.31

Table 27. DC/DC Converters Load Ratings

+3.3V Converter
24.0A
0.5A
3.3x24=79.2W

Table 28. Voltage Regulation Limits

Tolerance
- 3% / +5% +3.20
- 4% / +5% +4.80
-4%/ +5% +11.52
- 5% / +9% -11.40
Chassis Power Subsystem
+12VDC Input DC/DC Converters
+5V Converter
24.0A
0.5A
5x24=120W
MIN NOM
+3.30
+5.00
+12.00
-12.00
-12V
Converter
0.5A
0A
0.5x12=6W
MAX Units
+3.465 VDC
+5.25 VDC
+12.60 VDC
-13.08 VDC
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