Intel R1304BTSSFAN Datasheet download pdf (Page 23)

Intel

Server System R1304BTSSFAN/R1304BTLSFAN/R1304BTLSHBN TPS 250W Power Subsystem

Revision 2.0 15

Intel order number G17455-004

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 shutdown 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 below.

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

+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 shutdown and latch off after an over voltage condition occurs. The output

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

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