Technical Product Specification for Canoe Pass - Preminary - Intel

Intel ® Server System P4000CP Power System Options Intel ® Server Board S2600CP and Server System P4000CP TPS
13.2.6 Protection Circuits
114
AC Input
Vout
PWOK
5VSB
PSON
T sb_on_delay
T AC_on_delay
T sb_vout
T pwok_on
AC turn on/off cycle
T pwok_holdup
T 5VSB_holdup
Tvout_holdup
Tpwok_off Tsb_on_delay Tpwok_on
T pwok_off
T pson_pwok
Figure 44. Turn On/Off Timing (Power Supply Signals)
Protection circuits inside the power supply causes only the power supply’s main outputs to
shutdown. 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.
13.2.6.1 Current Limit (OCP)
Below are over current protection limits for each output. If the current limits are exceeded the
power supply shuts down and latch off. The latch will be cleared by toggling the PSON # signal or
by an AC power interruption. The power supply does not be damaged from repeated power
cycling in this condition. -12V and 5VSB is protected under over current or shorted conditions so
that no damage can occur to the power supply. 5Vsb will be auto-recovered after removing OCP
limit.
Table 73. Over Current Limits
Tpson_on_delay
Output Min OCP Max OCP
+3.3V 19 A 30 A
+5V 16 A 30 A
+12V1,2 29 A 36 A
+12V3 (240VA limited) 18.5 A 20 A
-12V No damage
5Vstby No damage
13.2.6.2 Over Voltage Protection (OVP)
The power supply over voltage protection is locally sensed. The power supply shuts down and
latch off after an over voltage condition occurs. This latch is cleared by toggling the PSON #
Tpwok_low
PSON turn on/off cycle
Intel Confidential Revision 0.8
Intel order number G26942-003