Technical Product Specification

Power Sub-system Intel® Server Chassis SC5650 TPS
Revision 1.2
Intel order number E39531-004
100
Item Description Minimum Maximum Units
T
sb_vout
Delay from 5VSB being in regulation to O/Ps being in regulation at
AC turn on.
20 1000
ms
T
5VSB_holdup
Time the 5VSB output voltage stays within regulation after loss of
AC.
10
ms
Figure 24. Turn On/Off Timing (Power Supply Signals)
2.5.6 Protection Circuits
Protection circuits inside the power supply cause 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 15
seconds and a PSON# cycle HIGH for 1 second reset the power supply.
2.5.6.1 Current Limit (OCP)
Overload currents applied to each tested output rail will cause the output to trip before they
reach or exceed 240 VA. For testing purposes, the overload currents of each tested output rail
are ramped at a minimum rate of 10 A/sec starting from full load. If the current limits are
exceeded the power supply shuts down and latches off. The latch will be cleared by toggling the
PSON# signal or by an AC power interruption. The power supply is not damaged from repeated
power cycling in this condition. -12V and 5VSB are protected under over current or shorted
conditions so that no damage can occur to the power supply. 5Vsb is auto-recovered after
removing OCP limit.
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