730-W Protection Circuits; Table 18. Voltage Regulation Limits - Intel SC5300BRP Technical Product Specification

Intel® Server Chassis SC5300 5U Kit TPS
3.2.5.4 Stand By Operation
Fan-less operation requirement is the power supply's ability to work indefinitely in stand-by
mode: with power on, power supply off and the 5VSB at full load (=2A) under environmental
conditions (temperature, humidity, altitude).
3.2.5.5 Voltage Regulation
The output voltages must stay within the following voltage limits when operating at steady state
and dynamic loading conditions. All outputs are measured with reference to the return remote
sense signal (ReturnS). The 12V and 5VSB outputs are measured at the power distribution
output connectors referenced to return source.
Parameter
+ 12V
+ 5VSB
3.2.6

730-W Protection Circuits

Protection circuits inside the power supply shall cause only the power supply's main output to
shutdown. If the power supply latches off due to a protection circuit tripping, an AC cycle OFF
for 15 sec and a PSON# cycle HIGH for 1 sec shall be able to reset the power supply.
3.2.6.1 Over Current Protection
The power supply shall have over current limit to prevent the +12V output. If the current limits
are exceeded, the power supply shall shutdown and latch off. The latch is cleared by toggling
the PSON# signal or by an AC power interruption. The power supply shall not be damaged from
repeated power cycling in this condition. The 5VSB shall also be protected during over current
or shorted conditions so that no damage can occur to the power supply.
3.2.6.2 Over Voltage Protection and Over Temperature
The power supply shall shutdown and latch off after an over voltage condition occurs. This latch
is cleared by toggling the PSON
The power supply is protected against over temperature conditions caused by loss of fan
cooling or excessive ambient temperature. In an over temperature protection (OTP) condition
the power supply will shutdown. When the power supply temperature drops to within specified
limits, the power supply shall restore power automatically, while the 5VSB remains always on.
Revision 1.31

Table 18. Voltage Regulation Limits

Tolerance MIN
-4%/+5% +11.52
-4%/+5% +4.80
#
signal or by an AC power interruption.
Chassis Power Subsystem
NOM MAX
+12.00 +12.60
+5.00 +5.25
Units
V
rms
V
rms
37