Intel SC5650BCDP User Manual
Power Sub-System
Intel
®
Server System SC5650BCDP TPS
Intel order number: E80367-002
Revision 1.5
26
Figure 10. Turn On/Off Timing (Power Supply Signals)
3.1.6
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
sec and a PSON# cycle HIGH for 1sec will reset the power supply.
down. If the power supply latches off due to a protection circuit tripping, an AC cycle OFF for 15
sec and a PSON# cycle HIGH for 1sec will reset the power supply.
3.1.7
Current Limit (OCP)
The power supply has a current limit to prevent the +3.3V, +5V, and +12V outputs from
exceeding the values shown in the following table. If the current limits are exceeded, the power
supply will shut down and latch off. The latch will be cleared by either 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 occurs to the power supply. 5VSB will auto-recover after the OCP limit is removed.
exceeding the values shown in the following table. If the current limits are exceeded, the power
supply will shut down and latch off. The latch will be cleared by either 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 occurs to the power supply. 5VSB will auto-recover after the OCP limit is removed.
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