Intel
®
Entry Server Chassis SC5299-E TPS Power Sub-system
Revision 3.1
Intel order number D37594-005
41
Item Description Minimum Maximum Units
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
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 12. Turn On/Off Timing (Power Supply Signals)
2.2.4.23 Residual Voltage Immunity in Standby Mode
The power supply is immune to any residual voltage placed on its outputs (typically a leakage
voltage through the system from standby output) up to 500mV. There is neither additional heat
generated, nor stress of any internal components with this voltage applied to any individual
output, and all outputs simultaneously. It also does not trip the protection circuits during turn on.
The residual voltage at the power supply outputs for no-load condition does not exceed 100mV
when AC voltage is applied.
2.2.5 Protection Circuits
Protection circuits inside the power supply cause only the power supply’s main outputs to
shutdown. If the power supply latches off due to a protection circuit tripping, an AC cycle OFF
for 15sec and a PSON# cycle HIGH for 1 sec will reset the power supply.
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