Intel
®
Entry Server Chassis SC5299-E TPS Power Sub-system
Revision 3.1
Intel order number D37594-005
69
Table 82. SATA Power Connector
Pin Signal 18 AWG Color
1 +3.3V Orange
2 COM Black
3 +5VDC Red
4 COM Black
5 +12V4 Green
2.4.2.11 Remote Sense
The cage 12V to 3.3V and 5V converters use remote sensing to regulate out voltage drops in
the system for the +3.3V output. The remote sense output impedance to this DC/DC converter
must be greater than 200 . This is the value of the resistor connecting the remote sense to the
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.
2.4.2.12 +12V Outputs Load Requirements
This section describes the +12V output power requirements from the cage with one or two 650-
W power supplies plugged into the input of the cage. The power distribution board divides up
the 12V power from power supply modules into five separate 240VA limited channels. Channels
1 through 4 supply 12V power directly to the end system. The fifth channel supplies power to
the 3.3V and 5V converters. The 5
th
12V doesn’t need to meet the 240VA requirement.
Table 83. +12V Outputs Load Ratings
+12V1/2/3/4/5 combined output limit = 54A/58A pk max
+12V1 +12V2
+12V3 +12V4 +12V5
MAX Load 16A 16A 16A 16A 18A
MIN Static/Dynamic Load 0 0 0A 0A 0A
Peak load (12 seconds) 18A 18A 18A 18A 20A
Max Output Power, see note 1 12 x16A
=192W
12 x16A
=192W
12V x16A
=192W
12V x16A
=192W
12V x18A
=216W
Notes:
1. 12V maximum output current is 54 A.
2. Peak power and current loading shall be supported for a minimum of 12 seconds.
3. 12V5 is the power source for the three DC-DC converters to generate 3.3V, 5V, and -12V.
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