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Design and Environmental Specifications IntelP®P Server Board S3420GP TPS
Table 63. Turn On/Off Timing
Item Description Minimum Maximum Units
T
sb_on_delay
Delay from AC being applied to 5 VSB being
within regulation.
N/A 1500
Msec
T
ac_on_delay
Delay from AC being applied to all output voltages
being within regulation.
N/A 2500
Msec
T
vout_holdup
Duration for which all output voltages stay within
regulation after loss of AC. Measured at 80% of
maximum load.
21 N/A
Msec
T
pwok_holdup
Delay from loss of AC to de-assertion of PWOK.
Measured at 80% of maximum load.
20 N/A
Msec
T
pson_on_delay
Delay from PSON
#
active to output voltages within
regulation limits.
5 400
Msec
T
pson_pwok
Delay from PSON
#
deactive to PWOK being de-
asserted.
N/A 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
(3.3 V, 5 V, 12 V, -12 V) dropping out of regulation
limits.
1 N/A
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 N/A
Msec
T
sb_vout
Delay from 5 VSB being in regulation to O/Ps
being in regulation at AC turn on.
50 1000
Msec
T
5VSB_holdup
Duration for which the 5 VSB output voltage stays
within regulation after loss of AC.
70 N/A
Msec
Figure 38. Turn On/Off Timing (Power Supply Signals)
Revision 1.0
Intel order number E65697-003
92