SE7500CW2 Server Board Technical Product Specification
General Specifications
101
Revision 1.40
Figure 11. Turn on / off Timing
Table 67. 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.
21
msec
T
pwok_holdup
Delay from loss of AC to de-assertion of PWOK
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
#
deactive to PWOK being de-asserted.
50
msec
T
pwok_on
Delay from output voltages within regulation limits to PWOK asserted at
turn on.
100
1000
msec
T
pwok_off
Delay from PWOK de-asserted to output voltages (3.3V, 5V, 12V, -12V)
dropping out of regulation limits.
2
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 5 V SB being in regulation to O/Ps being in regulation at AC
turn on.
50
1000
msec
AC Input
Vout
PWOK
5VSB
PSON
T
sb_on_delay
T
AC_on_delay
T
pwok_on
T
vout_holdup
T
pwok_holdup
T
pson_on_delay
T
sb_on_delay
T
pwok_on
T
pwok_off
T
pwok_off
T
pson_pwok
T
pwok_low
T
sb_vout
AC turn on/off cycle
PSON turn on/off cycle
