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Intel
®
Server Board S5000PAL / S5000XAL TPS Power and Environmental Specifications
Revision 1.4
Intel order number: D31979-007
77
Table 43. Turn On/Off Timing
Item Description MIN MAX UNITS
T
sb_on_delay
Delay from AC being applied to 5VSB being within regulation. 1500 msec
T
ac_on_delay
Delay from AC being applied to all output voltages being within
regulation.
2500
msec
T
vout_holdup
Time all output voltages stay within regulation after loss of AC.
Measured at 60% of maximum load.
21
msec
T
pwok_holdup
Delay from loss of AC to de-assertion of PWOK. Measured at
60% of maximum load.
20
msec
T
pson_on_delay
Delay from PSON
#
active to output voltages within regulation
limits.
5 400
msec
T
pson_pwok
Delay from PSON
#
de-active to PWOK being de-asserted. 50 msec
T
pwok_on
Delay from output voltages within regulation limits to PWOK
asserted at turn on.
100 500
msec
T
pwok_off
Delay from PWOK de-asserted to output voltages (3.3V, 5V,
12V, -12V) dropping out of regulation limits.
1
msec
T
pwok_low
Duration of PWOK being in the de-asserted state during an
off/on cycle using AC or the PSON signal.
100
msec
T
sb_vout
Delay from 5VSB being in regulation to O/Ps being in
regulation at AC turn on.
50 1000
msec
T
5VSB_holdup
Time the 5VSB output voltage stays within regulation after loss
of AC.
70
msec
V out
AC Input
PWOK
5 VSB
PSON
TP02314
T
vout_holdup
T
AC_on_delay
T
sb_on_delay
T
pwok_on
AC turn on/off cycle PSON turn on/off cycle
T
sb_vout
T
5VSB_holdup
T
pwok_holdup
T
pwok_off
T
pwok_low
T
pson_on_delay
T
sb_on_delay
T
pwok_on
T
pwok_off
T
pson_pwo
k
Figure 27. Turn On/Off Timing (Power Supply Signals)