Intel S5500HCVR Datasheet download pdf (Page 145)

Intel® Server Board S5520HC / S5500HCV TPS Design and Environmental Specifications

Revision 1.2

Intel order number E39529-009

131

9.4.1 Grounding

The output ground of the pins of the power supply provides the output power return path. The

output connector ground pins are connected to the safety ground (power supply enclosure).

9.4.2 Stand-by Outputs

The 5 VSB output should be present when an AC input is greater than the power supply turn-on

voltage is applied.

9.4.3 Remote Sense

The power supply should have remote sense return (ReturnS) to regulate out ground drops for

all output voltages: +3.3 V, +5 V, +12 V1, +12 V2, +12 V3, +12 V4, -12 V, and 5 VSB. The

power supply should use remote sense to regulate out drops in the system for the +3.3 V, +5 V,

and +12 V1 outputs.

The +12 V1, +12 V2, +12 V3, +12 V4, –12 V, and 5V SB outputs only use remote sense

referenced to the ReturnS signal. The remote sense input impedance to the power supply must

be greater than 200  on 3.3 VS and 5 VS. This is the value of the resistor connecting the

remote sense to the output voltage internal to the power supply.

Remote sense must be able to regulate out a minimum of 200 mV drop. The remote sense

return (ReturnS) must be able to regulate out a minimum of 20 0mV drop in the power ground

return. The current in any remote sense line should be less than 5 mA to prevent voltage

sensing errors.

The power supply must operate within specification over the full range of voltage drops from the

power supply’s output connector to the remote sense points.

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Intel S5500HCVR Datasheet Page 145