Intel SC5299BRP Technical Product Specification page 71

Power Sub-system
Item
T Delay from AC being applied to 5VSB being within
sb_on_delay
regulation.
T Delay from AC being applied to all output voltages being
ac_on_delay
within regulation.
T Time all output voltages stay within regulation after loss of
vout_holdup
AC.
T Delay from loss of AC to de-assertion of PWOK
pwok_holdup
T Delay from PSON
pson_on_delay
limits.
T Delay from PSON
pson_pwok
T Delay from output voltages within regulation limits to PWOK
pwok_on
asserted at turn on.
T Delay from PWOK de-asserted to 12V output voltage
pwok_off
dropping out of regulation limits.
T Duration of PWOK being in the de-asserted state during an
pwok_low
off/on cycle using AC or the PSON signal.
T Delay from 5VSB being in regulation to O/Ps being in
sb_vout
regulation at AC turn on.
T Time the 5VSB output voltage stays within regulation after
5VSB_holdup
loss of AC.
Note:
1 T and T
vout_holdup pwok_holdup
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.
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.
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.
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.
56
Table 64. Turn On/Off Timing
Description
#
active to output voltages within regulation
#
deactive to PWOK being de-asserted.
are defined under 60% loading.
Intel order number D37594-005
®
Intel Entry Server Chassis SC5299-E TPS
Minimum
21
20
5
100
1
100
50
70
Maximum Units
ms
1500
ms
2500
ms
ms
ms
400
50 ms
ms
1000
ms
ms
ms
1000
ms
Revision 3.1