Residual Voltage Immunity In Stand-By Mode; Figure 33. Turn On/Off Timing (Power Supply Signals) - Intel S1400SP Technical Manual

Server Board Power Distribution
AC Input
Vout
T
AC_on_delay
T
sb_on_delay
PWOK
5VSB
T
sb_vout
PSON
AC turn on/off cycle
12.2.14

Residual Voltage Immunity in Stand-by 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 stressing of any internal components with this voltage applied to any individual
or 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 and the PSON# signal is de-asserted.
108
T
pwok_on
T
pwok_holdup
T
_
5VSB holdup

Figure 33. Turn On/Off Timing (Power Supply Signals)

Intel order number G64248-003
T
vout_holdup
T
pwok_low
T
T
pwok_off
sb_on_delay
Intel® Server Board S1400SP TPS
T
pwok_on
T
pson_on_delay
PSON turn on/off cycle
Revision 2.1
T
pwok_off
T
pson_pwok