Intel SC5400LXI 用户手册
Chassis Power Subsystem
Intel® Server Chassis SC5400 5U Kit TPS
38
Revision:
1.0
5.2.5.5 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.
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.
Table 26. Voltage Regulation Limits
Parameter
Tolerance
Minimum
Nominal
Maximum
Units
+
12V
-5%/+5% +11.40 +12.00 +12.60 V
rms
+
5VSB
-5%/+5%
+4.75 +5.00 +5.25 V
rms
5.2.6
830W 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 one second shall be able to reset the power
supply.
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 one second shall be able to reset the power
supply.
5.2.6.1
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.
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.
5.2.6.2
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# signal or by an AC power interruption.
is cleared by toggling the PSON# signal or by an AC power interruption.
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.
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.
5.2.7
830W Power Supply Control and Indicator Functions
5.2.7.1
PSON# Input Signal
The PSON# signal is required to turn on/off the power supply. PSON# is an active low signal
that turns on the +12V power rail. When this signal is not pulled low by the system, or left open,
the output (except the +5VSB) turns off. This signal is pulled to a standby voltage by a pull-up
resistor internal to the power supply.
that turns on the +12V power rail. When this signal is not pulled low by the system, or left open,
the output (except the +5VSB) turns off. This signal is pulled to a standby voltage by a pull-up
resistor internal to the power supply.