CPCI420DC Datasheet, PDF (2/4 Pages) C&D Technologies – 420 Watt, 6U x 8HP, CompactPCI

SPECIFICATIONS, ALL MODELS
Current Share
Active current sharing is employed on outputs V1, V2, and V3.
Accuracy exceeds 10% of maximum rated load. N_max = 4.
Output V4 to share within 40% of maximum rated load by
means of droop response.
Remote Sense
Outputs V1, V2, and V3 capable of compensating up to
0.5VDC of line drop. Unit automatically reverts to local
sensing in the event that the sense leads are opened for any
reason. Unit is protected against reversed or shorted sense
leads.
Output Power
420W continuous maximum, with 400lfm airflow at a
maximum ambient of 50°C. See Derating Chart on page 3 for
additional data.
Overload Protection
Outputs are individually protected against overloads and
indefinite short circuit with automatic recovery upon removal
of the fault condition.
Over Voltage Protection
Output V1 OVP set at 6.0V ± 0.5VDC. Output V2 OVP set at
4.3V ± 0.5VDC. Output V3 OVP set at 13.5 +0.5VDC. Output
V4 OVP set at -13.5 +0.5VDC. The power supply will shut
down and latch off under an OVP fault condition. Restart of
the unit is accomplished by cycling of the input power.
Over Temperature Protection
Thermal switch shuts down the power supply in the event that
critical temperatures are exceeded. Unit will automatically
restart when acceptable temperatures are restored.
Output Fault Isolation
Output isolation diodes are present in all outputs to isolate
faults within a failed power supply.
Synchronous Start
Interconnection of the Sync Start pin (pin 23) ensures that the
outputs of parallel supplies will be enabled simultaneously to
DERATING CHART
450
400
350
300
ensure sufficient source current in applications where the load
current exceeds the capacity of a single power supply module.
Remote Inhibit (INH#)
Secondary referenced, active low, TTL compatible signal inhibits
all outputs upon activation.
Power Fail Warning (FAL#)
Secondary referenced, active low, TTL compatible signal
indicates output failure.
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.
Fault Indicator
Red LED will be ON if output voltages are not within
specification.
Power Present LED
Green LED will be ON when input voltage is present and
above the minimum requirement.
Cooling
400 lfm of airflow required to maintain full output power at 0-
50°C ambient. See Derating Chart below for additional data.
Temperature
0-70°C operating range with full output power achievable
over the range of 0-50°C. See Derating Chart below for
additional data. Storage temperature limits are –20 to +85°C.
Altitude
Operating: -200 to +10,000 feet with ambient temperature
derating above 5,000 feet in accordance with the adiabatic
lapse rate.
NOTES: Data points are typical.
Power derating is load profile-dependent;
data shown reflects output load currents
reduced in direct proportion to the power
derating.
250
400 LF
200 LF
200
100 LF
150
100
50
0
20
30
40
50
60
70
Ambient Temp. ( Degrees C)
Product: www.cdpowerelectronics.com
cPCI420-DC REV B 8/2002
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