Technical Product Specification

Table Of Contents
Power and Environmental Specifications Intel
®
Server Board S5400SF TPS
Revision 2.02
Intel order number: D92944-007
150
Table 91. Turn On/Off Timing
Item Description Minimum Maximum Units
T
sb_on_delay
Delay from AC being applied to 5 VSB 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
Duration for which 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 (3.3 V, 5 V,
12 V, -12 V) 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
Duration for which the 5 VSB output voltage stays within
regulation after loss of AC.
70
msec
Figure 53. Turn On/Off Timing (Power Supply Signals)
V
out
AC Input
PWOK
5 VSB
PSON
AF002180
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_pwok