Datasheet

Intel® Server Board S5520HC / S5500HCV TPS Design and Environmental Specifications
Revision 1.2
Intel order number E39529-009
135
Table 79. 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 ms
T
ac_on_delay
Delay from AC being applied to all output voltages being within
regulation.
N/A 2500
ms
T
vout_holdup
Time all output voltages stay within regulation after loss of AC. 21 N/A ms
T
pwok_holdup
Delay from loss of AC to de-assertion of PWOK 20 N/A ms
T
pson_on_delay
Delay from PSON# active to output voltages within regulation
limits.
5 400
ms
T
pson_pwok
Delay from PSON# deactivate to PWOK being de-asserted. 50 ms
T
pwok_on
Delay from output voltages within regulation limits to PWOK
asserted at turn on.
100 500
ms
T
pwok_off
Delay from PWOK de-asserted to output voltages (3.3 V, 5 V,
12 V, and -12 V) dropping out of regulation limits.
1 N/A
ms
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
ms
T
sb_vout
Delay from 5 VSB being in regulation to O/Ps being in
regulation at AC turn on.
50 1000
ms
T
5VSB_holdup
Time the 5 VSB output voltage stays within regulation after loss
of AC.
70 N/A
ms
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
T
5VSB
_
holdup
Figure 55. Turn On/Off Timing (Power Supply Signals)