Technical Product Specification

Intel
®
Server Chassis P4000S Family TPS Chassis Power Sub-system
Revision 1.5 Intel order number G22850-006
41
Item
Description
MIN
MAX
UNITS
T
vout_holdup
Time all output voltages stay within regulation
after loss of AC. Tested at 75% of maximum
load.
13
ms
T
pwok_holdup
Delay from loss of AC to de-assertion of PWOK.
Tested at 75% of maximum load.
12
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 (3.3V, 5V, 12V, -12V) dropping out of
regulation limits.
1
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
ms
T
sb_vout
Delay from 5VSB being in regulation to O/Ps
being in regulation at AC turn on.
10
1000
ms
T
5VSB_holdup
Time the 5VSB output voltage stays within
regulation after loss of AC.
70
ms
Figure 27. Turn On/Off Timing (Power Supply Signals)
2.2.6 Protection Circuits
Protection circuits inside the power supply causes only the power supply’s main outputs to shut
down. If the power supply latches-off due to a protection circuit tripping, an AC cycle OFF for
15sec and a PSON
#
cycle HIGH for 1sec able to reset the power supply.