Intel SR1695GPRX1AC ユーザーズマニュアル
Intel® Server System SR1695GPRX TPS
Power Sub-System
Revision 1.5
23
Intel order number: G11332-006
Table 28. PS ON# Signal Characteristics.
Signal Type(Input Signal to Supply)
Accepts an open collector/drain input from the system. Pull-up
internal to the power supply.
PSON
#
= Low, PSKILL = Low
ON
PSON
#
= Open, PSKILL = Low or Open
OFF
PSON
#
= Low, PSKILL = Open
OFF
MIN MAX
Logic level low (power supply ON)
0V
1.0V
Logic level high (power supply OFF)
2V
5.25V
Source current, V
PSON
# = low
4mA
3.4.2 PSKILL
The purpose of the PSKILL pin is to allow for hot swapping of the power supply and to provide a
fast shutdown input.
fast shutdown input.
The PSKILL pin on the power supply is shorter than the other signal pins.
When a power supply is operating in parallel with other power supplies and then extracted from
the system, the PSKILL pin shall quickly turn off the power supply and prevent arcing of the DC
output contacts.
the system, the PSKILL pin shall quickly turn off the power supply and prevent arcing of the DC
output contacts.
The DC output contacts shall not arc under this condition. T
PSKILL
(shown in
below table) is the minimum time delay from the PSKill pin un-mating to when the power pins
un-mate. The power supply shall discharge its output inductor within this time from the un-
mating of the PSKill pin. When the PSKILL signal pin is not pulled down or left open (power
supply is extracting from the system), the power supply shall shut down regardless of the
condition of the PSON
un-mate. The power supply shall discharge its output inductor within this time from the un-
mating of the PSKill pin. When the PSKILL signal pin is not pulled down or left open (power
supply is extracting from the system), the power supply shall shut down regardless of the
condition of the PSON
#
signal. The mating pin of this signal in the system shall be tied to
ground. Internal to the power supply, the PSKill pin shall be connected to a standby voltage
through a pull-up resistor. Upon receiving a LOW state signal at the PSKill pin, the power supply
shall be allowed to turn on via the PSON
through a pull-up resistor. Upon receiving a LOW state signal at the PSKill pin, the power supply
shall be allowed to turn on via the PSON
#
signal. A logic LOW on this pin by itself shall not turn
on the power outputs.
Table 29. PSKILL# Signal Characteristics
Signal Type (Input Signal to Supply)
Accepts a ground input from the system. Pull-up to VSB
located in the power supply.
PSKILL = Low, PSON
#
= Low
ON
PSKILL = Open, PSON
#
= Low or Open
OFF
PSKILL = Low, PSON
#
= Open
OFF
MIN MAX
Logic level low (power supply ON)
0V
0.8V
Logic level high (power supply OFF)
2V
5.25V
Source current, V
PSKILL
= low
4mA
Delay from PSKILL=High to power supply turned off
(T
(T
PSKILLl
)
1
100
μsec
3.4.3 PWOK(power
good)
PWOK is a power good signal and shall be pulled HIGH by the power supply to indicate that the
+12V output is within the regulation limits of the power supply.
+12V output is within the regulation limits of the power supply.
When +12V output voltage falls
out of regulation or when AC power has been removed for a time sufficiently long so that power
supply operation is no longer guaranteed, PWOK shall be de-asserted to a LOW state. See
Figure 3.6 Turn On/Off Timing Diagram for a representation of the timing characteristics of
PWOK.
supply operation is no longer guaranteed, PWOK shall be de-asserted to a LOW state. See
Figure 3.6 Turn On/Off Timing Diagram for a representation of the timing characteristics of
PWOK.
This signal shall be pulled up to 5VSB inside the PS.