Technical Product Specification

Intel® Server System R1304BTSSFAN/ R1304BTLSFAN/ R1304BTLSHBN TPS 250W Power Subsystem
voltages are measured at the harness connectors. The voltage shall never exceed the
maximum levels when measured at the power pins of the output harness connector during any
single point of fail. The voltage shall never trip any lower than the minimum levels when
measured at the power pins of the connector.
Table 12. Over Voltage Protection (OVP) Limits
Output Voltage
OVP MIN (V)
OVP MAX (V)
+3.3V
3.7
4.5
+5V
5.6
6.5
+12V
13.3
15.6
-12V
-13.3
-15.6
+5VSB
5.6
6.5
3.8.3
Over Temperature Protection (OTP)
The power supply shall be protected against over temperature conditions caused by loss of fan
cooling or excessive ambient temperature. In an OTP condition the PSU will shut down. When
the power supply temperature drops to within specified limits, the power supply shall restore
power automatically, while the +5VSB remains always on. The OTP trip level shall have a
minimum of 4ºC of ambient temperature hysteresis, so that the power supply will not oscillate on
and off due to temperature recovery condition.
Revision 2.4
15