DNX350 4/2002 REV B
Page 1
DESCRIPTION
The DNX350 is a compact 350 watt, multiple output power supply
that operates from a 36-72V
DC
source. All outputs are fully
isolated and regulated. Active current sharing circuitry on Output
#1, together with control functions and alarm options, simplifies
N+1 and redundant applications. Fan and disk drive applications
are handled by the peak current ratings of the auxiliary outputs.
FEATURES
Fully Isolated Outputs
Low Profile: 9" x 4.85" x 2.00"
One, Two, Three and Four
Output Models
Active Current Sharing on V1
Optional Fan Covers
(Top-Mounted or End-Mounted)
Active Inrush Current Limiting
36-72V
DC
Input
AGENCY APPROVALS
See "Safety" section on page 2 for more information
350 W
ATT
DC/DC P
OWER
S
UPPLY
DNX350
Product Data Sheet
Power Electronics Division, United States
3400 E Britannia Drive, Tucson, Arizona 85706
Tel: 800.547.2537 Fax: 520.295.4197
C&D Technologies, (NCL)
Milton Keynes MK14 5BU UK
Tel: +44 (0)1908 615232 Fax: +44 (0)1908 617545
Any data, prices, descriptions or specifications presented herein are subject to revision by C&D Technologies, Inc. without notice. While such information is believed to be
accurate as indicated herein, C&D Technologies, Inc. makes no warranty and hereby disclaims all warranties, express or implied, with regard to the accuracy or completeness
of such information. Further, because the product(s) featured herein may be used under conditions beyond its control, C&D Technologies, Inc. hereby disclaims all warranties,
either express or implied, concerning the fitness or suitability of such product(s) for any particular use or in any specific application or arising from any course of dealing
or usage of trade. The user is solely responsible for determining the suitability of the product(s) featured herein for user's intended purpose and in user's specific application.
C&D Technologies, Inc. does not warrant or recommend that any of its products be used in any life support or aviation or aerospace applications.
Website: http://www.cdpowerelectronics.com
DNX350 4/2002 REV B
Page 2
Input Specifications
Parameter
Conditions
Min
Typ
Max
Units
Operating Range
DC
36
48
72
V
DC
Inrush Current Limiting
36V
DC
25
A
PK
72V
DC
50
A
PK
Efficiency
48V
DC
at full load
70
%
Remote Sense
Remote Sense is provided on Output #1 and will
compensate for 0.7V of line drop. Remote Sense leads
are protected against open, short and reversal.
Remote On/Off (Optional)
The power supply is turned on with a TTL logic `1' (or open)
signal and turned off by a switch closure or TTL logic `0'
referenced to (-) sense terminal.
Over Voltage Protection
Output #1: 6.5V 0.5 V
DC.
The power supply will latch off until AC power is cycled.
Over Current Protection
Individual current limit on all outputs. Automatic recovery
upon fault removal.
Active Inrush Current Limiting
Inrush current is independent of ambient temperature.
Transient Response
The peak output voltage excursion will not exceed 2% and
will recover within 1% in 200
sec for a 25% load step
change.
Over Temperature Protection
Thermal switch turns off power supply if overheating occurs
and automatically restarts.
Safety
Safety Certified to UL/CUL to 1950, File Number E131694.
TUV to EN60950/IEC 950.
Cooling
The unit is designed to operate with 30 CFM of airflow.
DNX350 4/2002 REV B
Page 3
Output Specifications
Parameter
Limits
Regulation
Line
0.03%
Load
0.25%
Cross
0.05%
Minimum Load
Output #1
3.0A
Auxiliary Outputs
0.1A
Parameter
Conditions
Min
Typ
Max
Units
Voltage Adustment Range
Nominal line on all outputs
5
%
PARD
Peak-to-peak 20 MHz bandwidth
1
% P-P
Temperature
Operating
0
50
C
Storage
-20
+70
C
Temperature Coefficient (T
C
)
After half hour warm-up
0.02
%/C
Output Voltages and Maximum Rated Loads
OUTPUT #1
OUTPUT #2
OUTPUT #3
OUTPUT #4
MODEL NUMBER
V
OUT
I
MAX
V
NOM
I
MAX
/I
PK
V
NOM
I
MAX
/I
PK
V
NOM
I
MAX
/I
PK
DNX350-U1A
+5V
50A
DNX350-U3A
5V
50A
12V
10A/12A
12V
8A/10A
-
-
DNX350-U3B
5V
50A
15V
10A/12A
15V
8A/10A
-
-
DNX350-U4C
5V
50A
12V
10A/12A
12V
8A/10A
5V
3.0A
DNX350-U4D
5V
50A
12V
10A/12A
12V
8A/10A
24V
1.5A
DNX350-U4E
5V
50A
12V
10A/12A
12V
8A/10A
12V
3.0A
DNX350-U4F
5V
50A
15V
10A/12A
15V
8A/10A
5V
3.0A
DNX350-U4G
5V
50A
15V
10A/12A
15V
8A/10A
24V
1.5A
DNX350-U4H
5V
50A
15V
10A/12A
15V
8A/10A
12V
3.0A
DNX350-U4I
5V
50A
15V
10A/12A
15V
8A/10A
12V
3.0A
DNX350 4/2002 REV B
Page 4
J10
0.250
1.00
3
2
1
9.00
8.50
0.550
AIR FLOW
3.900
4.850
6-32 THD
4 PLC'S
1
2.15
TB2
J9
OUTPUT NO. 1
RETURN
10-32 STUD
OUTPUT NO. 1
10-32 STUD
6.94
3.34
4.85
3.90
3.60
0.55
0.62
0.25
6-32 MOUNTING LOCATED ON BOTTOM (4x)
8.50
9.00
3.00
1.99
AIR FLO
W
FAN OPTION
1
1
NO. 1 +V
OUTPUTS
NO. 1 -V
OUTPUT
3
ADJ.
OUTPUT
4
ADJ.
OUTPUT
5
ADJ.
TB2
TB1
PLUS
MINUS
2
3
1
1
Mechanical
NOTES: All measurements are in inches
COOLING: The DNX350 is designed to operate with 30 CM airflow.
SHOCK AND VIBRATION: The DNX350 meets the requirements of MIL STD-810D.
WEIGHT: Approximately 3 lbs.
Terminal Block 1
Terminal Block 2
POS
FUNCTION
POS
FUNCTION
1
DC +
1
-V2
2
DC -
2
+V2
3
Ground
3
-V3
4
+V3
5
-V4
6
+V4
J9 Connector
J10 Connector*
Molex No. 22-28-1090
AMP 1-480701-1
PIN
FUNCTION
POS
FUNCTION
1
+ Sense
1
DC+
2
- Sense
2
DC-
3
N/C
3
GROUND
4
N/C
5
Start Up Sync.
6
N/C
7
Remote Inhibit
8
Current Share
9
Control Signal Rtn
*Used with end-mounted fan cover,
option "V"
TOP MOUNTED
FAN
END MOUNTED
FAN
PDF 
ZIP