Intel SC5299WS User Manual
Power Sub-system
Intel
®
Entry Server Chassis SC5299-E TPS
Revision
3.1
Intel order number D37594-005
56
Table 64. Turn On/Off Timing
Item
Description
Minimum
Maximum
Units
T
sb_on_delay
Delay from AC being applied to 5VSB being within
regulation.
regulation.
1500
ms
T
ac_on_delay
Delay from AC being applied to all output voltages being
within regulation.
within regulation.
2500
ms
T
vout_holdup
Time all output voltages stay within regulation after loss of
AC.
AC.
21
ms
T
pwok_holdup
Delay from loss of AC to de-assertion of PWOK
20
ms
T
pson_on_delay
Delay from PSON
#
active to output voltages within regulation
limits.
5 400
ms
T
pson_pwok
Delay from PSON
#
deactive to PWOK being de-asserted.
50
ms
T
pwok_on
Delay from output voltages within regulation limits to PWOK
asserted at turn on.
asserted at turn on.
100 1000
ms
T
pwok_off
Delay from PWOK de-asserted to 12V output voltage
dropping out of regulation limits.
dropping out of regulation limits.
1
ms
T
pwok_low
Duration of PWOK being in the de-asserted state during an
off/on cycle using AC or the PSON signal.
off/on cycle using AC or the PSON signal.
100
ms
T
sb_vout
Delay from 5VSB being in regulation to O/Ps being in
regulation at AC turn on.
regulation at AC turn on.
50 1000
ms
T
5VSB_holdup
Time the 5VSB output voltage stays within regulation after
loss of AC.
loss of AC.
70
ms
Note:
1 T
vout_holdup
and T
pwok_holdup
are defined under 60% loading.
2.3.3.14
Hot Swap Requirement
Hot swapping a power supply is the process of inserting and extracting a power supply from an
operating power system. During this process the output voltages remain within the capacitive
load limits. Up to two power supplies can be on a single AC line. The power supply hot swaps
by the following method.
operating power system. During this process the output voltages remain within the capacitive
load limits. Up to two power supplies can be on a single AC line. The power supply hot swaps
by the following method.
Extraction: The AC power disconnects from the power supply as the power supply is
extracted from the system. This can occur in standby mode or power-on mode.
extracted from the system. This can occur in standby mode or power-on mode.
Insertion: The AC power connects to the power supply as the power supply is inserted
into the system. The power supply powers on into either standby mode or power-on
Mode.
into the system. The power supply powers on into either standby mode or power-on
Mode.
In general, a failed (off by internal latch or external control) power supply may be removed, then
replaced with a good power supply; however, hot swap will work with both operational as well as
failed power supplies. The newly inserted power supply will get turned on into standby or Power
On mode once inserted.
replaced with a good power supply; however, hot swap will work with both operational as well as
failed power supplies. The newly inserted power supply will get turned on into standby or Power
On mode once inserted.