Technical Product Specification

250W Power Subsystem Intel® Server System R1304BTSSFAN/ R1304BTLSFAN/ R1304BTLSHBN TPS
3.7
Output Power/Currents
The following table defines two power and current ratings for this 250-W power supply. The
combined output power of all outputs should not exceed the rated output power. The power
supply must meet both static and dynamic voltage regulation requirements for the minimum
loading conditions.
Table 10. Load Ratings
Voltage
Minimum
Maximum
Output Power
+3.3 V
0.1 A
6 A
19.8 W
+5 V
0.1 A
12 A
60 W
+12 V
0.75 A
17 A
204 W
-12 V
0 A
0.5 A
6 W
+5 VSB
0.05 A
2.0 A
10 W
Notes:
1. The total output for this PSU is 250W.
2. The total output of +3.3V and +5V will not exceed 60W.
3. Peak power shall be 300W for 10sec. The peak 12V current shall be 1sec.
3.8
Protection Circuits
Protection circuits inside the power supply should 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 15sec min (with +5VSB/0.1A) and a PSON# cycle HIGH for 1sec shall be able to reset
the power supply.
3.8.1
Over Current Protection (OCP)
Each output shall have individual OCP protection circuits. The PSU shall shut down and latch
off after an over current condition occurs. Whereas OCP of +5VSB shall turn the power supply
into “hiccup mode” until the OCP condition removed. The values are measured at the PSU
harness connectors and shall not be damaged from repeated power cycling in this condition.
There shall be current sensors and limit circuits to shut down the entire power supply if the limit
is exceeded. The limits are listed in the following table.
Table 11. Over Load Protection (OCP) Limits
Output Voltage
Continuous Load
Current Limit MIN
Current Limit MAX
+12V
23A
25A
+5V
14.4 A
25A
+3.3V
15A
30A
-12V
4A
+5VSB
4.5A
3.8.2
Over Voltage Protection (OVP)
Each output shall have individual OVP protection circuits built in and it shall be locally sensed.
The PSU shall shut down and latch off after an over voltage condition occurs. The output
Revision 2.4
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