Technical Product Specification

Intel® Workstation System SC5650SCWS TPS Power Sub-system
Revision 1.2
Intel order number: E81822-002
77
Item Description Minimum Maximum Units
Tpwok_on Delay from output voltages within regulation limits to PWOK
asserted at turn on.
100 500
ms
Tpwok_off Delay from PWOK de-asserted to output voltages (3.3V, 5V,
12V, -12V) dropping out of regulation limits.
1
ms
Tpwok_low Duration of PWOK being in the de-asserted state during an
off / on cycle using AC or the PSON signal.
100
ms
Tsb_vout Delay from 5VSB being in regulation to O/Ps being in
regulation at AC turn on.
50 1000
ms
T5VSB_holdup Time the 5VSB output voltage stays within regulation after
loss of AC.
70
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 27. Turn On/Off Timing (Power Supply Signals)
4.1.8.14 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 no additional heat
generated or stress of any internal components with this voltage applied to any individual output,
or to all outputs simultaneously. Residual voltage also does not trip the power supply protection
circuits during turn on.
Residual voltage at the power supply outputs for a no-load condition does not exceed 100mV
when AC voltage is applied and the PSON# signal is de-asserted.