Technical Product Specification

Chassis Power Subsystem Intel® Server Chassis SC5600

Revision 1.1

Intel order number E39532-004

2. 3.3 V / 5 V combined power limit is 170 W maximum.

5.3.3.7 DC/DC Converters Voltage Regulation

The DC/DC converters’ output voltages must stay within the following voltage limits when

operating at steady state and dynamic loading conditions. These limits include the peak-peak

ripple/noise specified. All outputs are measured with reference to the return remote sense signal

(Returns). The 3.3 V and 5 V output is measured at the remote sense points; all other voltages

are measured at the output harness connectors.

Table 39. Voltage Regulation Limits

Converter Output Tolerance Minimum

Nominal Maximum Units

+ 3.3 VDC - 5% / +5% +3.14 +3.30 +3.465 VDC

+ 5 VDC - 5% / +5% +4.75 +5.00 +5.25 VDC

+12 VDC (12V1/2/3/4) -5%/ +5% +11.40 +12.00 +12.60 VDC

- 12 VDC - 5% / +9% -11.40 -12.00 -13.08 VDC

5 VSB -5% / +5% +4.75 +5.00 +5.25 VDC

5.3.3.8 Fan-less Operation in Stand-by Mode

The power supply will work indefinitely in standby mode with power on, power supply plus

power distribution board off, and the 5 VSB at full load under environmental conditions

(temperature, humidity, and altitude) as specified.

5.3.4 Protection Circuits

Protection circuits inside the power distribution board (and the power supply) cause one of the

following:

 The power supply’s main +12 V output to shutdown, which in turn shuts down the other

three outputs on the power distribution board.

 Shut down any of the three outputs on the power distribution board, which in turn also

shuts down the entire power supply combo.

If the power supply latches off due to a protection circuit tripping, an AC cycle OFF for 15

seconds minimum and a PSON

cycle HIGH for 1 second shall be able to reset the power

supply and the power distribution board.

5.3.4.1 Over Current Protection (OCP)

Each DC/DC converter output on the power distribution board has individual OCP protection

circuits. The power supply will shutdown and latch off after an over current condition occurs.

This latch is cleared by toggling the PSON

signal or by an AC power interruption. If the limit is

exceeded, current sensors and limit circuits shut down the entire power supply.