Technical Product Specification

IntelP
®
P Server System R1000JP Family TPS Power Sub-System
Notes:
1. 12Vstby must provide 4.0A with two power supplies in parallel. The fan may work when stby
current >1.5A
2. Length of time peak power can be supported is based on thermal sensor and assertion of
the SMBAlert# signal. Minimum peak power duration shall be 20 seconds without asserting
the SMBAlert# signal at maximum operating temperature.
3.2.7.2 Pmax Power support
The PSU should support 3msec peak power duration at a 50msec period; 5.7% duty cycle, Step
loading from 730W to 990W. Full AC input range; 100-127VAC/200-240VAC
The PSU should support one time 8ms duration 990W peak power without leading to PSU
shutdown.
3.2.7.3 Standby Output
The 12VSB output shall be present when an AC input greater than the power supply turn on
voltage is applied.
There should be load sharing in the standby rail. And two PSU modules should be able to
support 4A standby current.
3.2.8 Protection Circuits
Protection circuits inside the power supply shall cause only the power supply’s main outputs to
shut down. If the power supply latches off due to a protection circuit tripping, an AC cycle OFF
for 15sec and a PSON# cycle HIGH for 1sec shall be able to reset the power supply.
3.2.8.1 Current Limit (OCP)
The power supply shall have current limit to prevent the outputs from exceeding the values
shown in table below. If the current limits are exceeded the power supply shall shut down and
latch off. The latch will be 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. 12VSB
will be auto-recovered after removing OCP limit.
Table 32 Over Current Protection
Output VOLTAGE
Input voltage range
OVER CURRENT LIMITs
+12V
90 – 264VAC
72A min; 78A max
12VSB
90 – 264VAC
2.5A min; 3.5A max
3.2.8.2 Over Voltage Protection (OVP)
The power supply over voltage protection shall be locally sensed. The power supply shall shut
down and latch off after an over voltage condition occurs. This latch shall be cleared by toggling
the PSON# signal or by an AC power interruption. The values are measured at the output of the
power supply’s connectors. The voltage should never exceed the maximum levels when
measured at the power connectors of the power supply connector during any single point of fail.
The voltage should never trip any lower than the minimum levels when measured at the power
connector. 12VSB will be auto-recovered after removing OVP limit.
Revision 1.7 33
Intel order number: G71652-008