Technical Product Specification

Chassis Power Subsystem Intel® Server Chassis SC5600
Revision 1.1
Intel order number E39532-004
40
5.2.5.4 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 12 V and 5 VSB outputs are measured at the power distribution
output harness connector.
Table 26. Voltage Regulation Limits
Parameter Tolerance Minimum Nominal Maximum Units
+ 12 V -5%/+5% +11.40 +12.00 +12.60 V
DC
+ 5 VSB -5%/+5% +4.75 +5.00 +5.25 V
DC
5.2.6 750-W Power Supply Module 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 seconds and a PSON
#
cycle HIGH for 1 second shall be able to reset the power supply.
5.2.6.1 Over Current Protection (OCP)
If the current limits are exceeded, the power supply shall shut down 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 +12 V and 5 VSB shall be
protected during over current or shorted conditions, so no damage can occur to the power
supply.
5.2.6.2 Over Voltage Protection (OVP)
The power supply shall shut down and latch off after an over voltage condition occurs. This
latch is cleared by toggling the PSON
#
signal or by an AC power interruption. The latch is
cleared by toggling the PSON
#
signal or by an AC power interruption. The following table
contains the over voltage limits. The values are measured at the output of the power supply’s
connectors.
5.2.6.3 Over Temperature Protection (OTP)
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 shut down. When the power supply temperature drops to within specified
limits, the power supply shall restore power automatically, while the 5 VSB remains always on.
The over temperature protection circuit has built-in hysteresis such that the power supply will
not oscillate on and off due to a temperature recovering condition. The over temperature
protection trip level shall have a minimum of 4° C of ambient temperature hysteresis.