Technical Product Specification
Intel
®
Server Chassis H2000 Family TPS Power Sub-System
Revision 1.0 25
Intel order number: G59059-001
Table 29. SMBAlert# Signal Characteristics
Signal Type (Active Low)
Open collector/drain output from power supply. Pull-
up to VSB located in system.
Alert# = High
OK
Alert# = Low
Power Alert to system
MIN
MAX
Logic level low voltage, Isink=4 mA
0 V
0.4 V
Logic level high voltage, Isink=50 A
3.46 V
Sink current, Alert# = low
4 mA
Sink current, Alert# = high
50 A
Alert# rise and fall time
100 s
3.6 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.
3.6.1 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 shutdown 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 30. Over Current Protection
Output VOLTAGE
Input voltage range
OVER CURRENT LIMITS
PSU SKU
1200W
1600W
+12V
90 – 264VAC
140A min; 170A max
180A min; 200A max
+12V
STB
90 – 264VAC
2.5A min; 3A max
2.5A min; 3A max
3.6.2 Over Voltage Protection (OVP)
The power supply over voltage protection shall be locally sensed. The power supply shall
shutdown 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 shall never exceed the maximum levels
when measured at the power connectors of the power supply connector during any single point
of fail. The voltage shall never trip any lower than the minimum levels when measured at the
power connector. 12VSBwill be auto-recovered after removing OVP limit.
Table 31. Over Voltage Protection (OVP) Limits
Output Voltage
MIN (V)
MAX (V)
+12V
13.3
14.5
+12VSB
13.3
14.5