Technical Product Specification

Power Sub-System Intel® Server System SR1695WB TPS
Revision 1.4
Intel order number: E92079-005
20
3.5.11 Output voltage hold-up time
Upon loss of input voltage (at nominal), the output voltages shall remain in regulation for at
least 16msec.
3.5.12 Overshoot
Any output overshoot at turn on shall be less than 10% of the nominal output value. Any
overshoot shall recover to within the specified regulation in less than 0.5mS.
3.5.13 Temperature coefficient
After operating for 30 minutes or longer at 25℃ ambient, the output voltages shall not
change by more than +/-0.05% per degree C for any given line and load conditions.
3.6 Protection circuits
The 5VSB output shall remain on if the failure does not involve this output. When a
protection circuit shuts down a power supply, all the LED show a failed status and shall be
active, if the power supply latched off due to a protection circuit tripping. For AC power
supply module, an AC cycle off for 15 sec and PSON cycle high for 1 sec shall reset the
power supply, while For DC power supply module, a DC cycle off for 15 sec and PSON cycle
high for 1 sec shall reset the power supply. Else the power should auto-recover, when the
fail had been cleared or the power supply is within specification again.
3.6.1 +12V Over voltage protection
An over voltage condition shall measured on the +12V output of the power supply DC
connector. The power supply must shutdown and latch off when the +12V reaches the
voltage shown in Table 25. The latch can be cleared by togging the PSON signal or by an
AC or DC cycle off.
Table 25. +12V Over voltage protection requirements
Output Min Max Units
+12V 13.3V 14.5V VOLTS
3.6.2 Over current/short circuit protection
The power supply shall have current limit to prevent the +12V output from exceeding the
value shown in Table 26. The current limiting shall be of the constant current type for the
+12V. The power supply shall auto-recover, when OCP/SCP had been cleared. The power
supply shall not be damaged power cycling in this condition.
Table 26. Over current/short circuit protection
Voltage Over current limit
+12V 110% MIN; 150% MAX
3.6.3 Thermal protection
The power supply shall be protected against over temperature conditions caused by loss of
fan cooling or excessive ambient temperature. In an over temperature condition the PSU
shall be shut down with the exception of the 5VSB output. The power supply shall alert the
system of the OTP condition via the power supply the fail LED indicator. The power supply