2

cPCI500-DC REV D 8/2002

Product: www.cdpowerelectronics.com

Remote Inhibit (INH#)

Secondary referenced, active low, TTL compatible signal

inhibits all outputs upon activation.

Power Fail Warning (FAL#)

Open collector signal indicates output failure. Active low.

Enable (EN#)

Short pin on connector will enable power supply output when

the mating pin is grounded. Supply will not power up until

this pin is engaged to its mate in the backplane. Unit output

will be inhibited as pin is disengaged from the mating

connector.

Temperature Warning (DEG#)

Open collector indicates internal temperatures are approaching

the thermal shutdown limit. Active low.

Fault Indicator LED

A red LED will be ON if output voltages are not within

specification.

Power Present LED

A green LED will be ON when input voltage is present and

above the minimum requirement.

Cooling

400lfm of airflow required to maintain full output power at 0-

50°C ambient. Additional data on operation below 400lfm is

available in Application Note ACAN-01.

Temperature

Full output power achievable over the range of 0-50°C.

Storage temperature limits are –20 to +85°C. Additional data

on operation above 50°C is available in Application Note

ACAN-01.

Altitude

Operating: -200 to +10,000 feet with ambient temperature

derating above 5,000 feet in accordance with the adiabatic

lapse rate.

Inhibit Indicator LED (Yellow)

A yellow LED will be ON when the outputs are inhibited.

Transient Response

For a step load change of 50%-100%-50%, the peak output

excursion will not exceed 8% of nominal voltage, and will

recover to within 1% of nominal voltage within 200

microseconds.

Current Share

Active current sharing is employed on Outputs V1, V2 and V3.

Remote Sense

Outputs V1, V2, and V3 are capable of compensating up to

sensing in the event that the sense leads are opened for any

reason. Unit is protected against reversed or shorted sense

leads.

Output Power

500W continuous maximum, with 400lfm airflow at a

maximum ambient of 50°C.

Overload Protection

Outputs are individually protected against overloads and

indefinite short circuit with automatic recovery upon removal

of the fault condition.

Over Voltage Protection

All outputs have over voltage protection at 125% typical

(135% max.) of nominal.

Over Temperature Protection

Outputs are individually protected against over temperature.

Outputs will automatically restore upon recovery to

acceptable temperatures.

Output Fault Isolation

Output isolation diodes are present in all outputs to isolate

faults within a failed power supply.

IPMI Option

An I

2

C board is available as a factory-installed option to

provide an IPMI interface to the SM bus. Status functions

include output voltage and current levels as well as the DEG

warning. Output inhibit control can be toggled under software

command. See Application Note ACAN-02 for satellite

controller specification, ACAN-03 for firmware update

procedure and ACAN-04 for test procedure.

SPECIFICATIONS,ALLMODELS