Technical Product Specification

Intel® Server System SC5650HCBRP TPS Power Sub-system
Revision 1.2
Intel order number E81443-002
83
output voltage internal to the DC/DC converter. Remote sense must be able to regulate out of
up to 300mV drop on the +3.3V and 5V outputs. Also, the power supply ground return remote
sense (ReturnS) passes through the PDB and the output harness to regulate out ground drops
for its +12V and 5Vsb output voltages. The power supply uses remote sense (12VRS) to
regulate out drops up to the 240VA protection circuits on the PDB.
4.2.2.2 +12V Outputs Load Requirements
This section describes the +12V output power requirements from the cage with one or two 600-
W power supplies plugged into the input of the cage. The power distribution board divides up
the 12-V power from power supply modules into five separate 240VA limited channels.
Channels 1 through 4 supply 12-V power directly to the end system. A channel supplies power
to the 3.3V, 5V, and -12V PDB converters.
.
Table 43. +12V Outputs Load Ratings
+12V1/2/3/4 combined output limit = 64A / 72A pk max
+12V1 +12V2 +12V3 +12V4
MAX Load 16A 16A 16A 16A
MIN Static / Dynamic Load 0.2A 0.2A 0.1A 0.1A
Peak load (12 seconds) 18A 18A 18A 18A
1. Peak power and current loading shall be supported for a minimum of 12 seconds.
4.2.2.3 DC/DC Converters Loading
The following table defines the power and current ratings for the three DC/DC converters
located on the cage; each is powered from a +12V5 rail. The three converters meet both static
and dynamic voltage regulation requirements for the minimum and maximum loading conditions.
Note: 3.3V/5V combined power limit is 170 W max
Table 44. DC/DC Converters Load Ratings
+12VDC Input DC/DC Converters
+3.3V Converter +5V Converter -12V Converter
MAX Load 24.0A 30.0A 0.3A
MIN Static / Dynamic Load 0A 0A 0A
1. Maximum continuous total DC output power should not exceed 570 W.
2. Peak power and current loading shall be supported for a minimum of 12 seconds.
3. Combined 3.3V and 5V power shall not exceed 170 W.
4.2.2.4 DC/DC Converters Voltage Regulation
The DC/DC converters’ output voltages stay within the following voltage limits when operating at
steady state and dynamic loading conditions. These limits include the peak-peak ripple/noise.