Protection Circuits; Figure 26 Turn On/Off Timing (Power Supply Signals); Table 62 Over Current Protection - Intel P4000IP Series Technical Product Specification

System Power Sub-system
AC Input
Vout
T
AC_on_delay
T
sb_on_delay
PWOK
12Vsb
T
sb_vout
PSON
AC turn on/off cycle
2.3.5

Protection Circuits

Protection circuits inside the power supply shall cause 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
2.3.5.1 Current Limit (OCP)
The power supply shall have current limit to prevent the outputs from exceeding the values
shown in table below. If the current limits are exceeded the power supply shall shutdown and
latch off. The latch will be cleared by toggling the PSON
The power supply shall not be damaged from repeated power cycling in this condition. 12VSB
will be auto-recovered after removing OCP limit.
Output VOLTAGE Input voltage range
+12V
12VSB
2.3.5.2 Over Voltage Protection (OVP)
The power supply over voltage protection shall be locally sensed. The power supply shall
shutdown and latch off after an over voltage condition occurs. This latch shall be cleared by
#
toggling the PSON signal or by an AC power interruption. The values are measured at the
Revision 1.0
Intel® Server System P4000IP and Intel® Workstation System P4000CR Family TPS
T
pwok_on
T
pwok_holdup
T
_
5Vsb holdup

Figure 26 Turn On/Off Timing (Power Supply Signals)

#
cycle HIGH for 1sec shall be able to reset the power supply.

Table 62 Over Current Protection

90 – 264VAC
180A min; 200A max
90 – 264VAC
4A min; 5A max
Intel order number G38159-001
T
vout_holdup
T
pwok_low
T
T
pwok_off
sb_on_delay
PSON turn on/off cycle
#
signal or by an AC power interruption.
OVER CURRENT LIMITs
T T
pwok_on pwok_off
T
pson_pwok
T
pson_on_delay
59