Datasheet DNX350-U4E, DNX350-U4D, DNX350-U4C, DNX350-U3B, DNX350-U3A Datasheet (CANDD)

Product Data Sheet

350 WATT

DC/DC POWER SUPPLY

DNX350

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

DESCRIPTION

The DNX350 is a compact 350 watt, multiple output power supply
that operates from a 36-72VDC 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.

Website: http://www.cdpowerelectronics.com

Power Electronics Division, United States

3400 E Britannia Drive, Tucson, Arizona 85706

Tel: [phone] Fax: [phone]

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.

 36-72VDC Input

AGENCY APPROVALS

See “Safety” section on page 2 for more information

C&D Technologies, (NCL)

Milton Keynes MK14 5BU UK

Tel: [phone] Fax: [phone]

DNX350 4/2002 REV B Page 1

Input Specifications

Parameter Conditions Min Typ Max Units

Operating Range DC 36 48 72 VDC

Inrush Current Limiting

36VDC 25 APK

72VDC 50 APK

Efficiency 48VDC 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 VDC.
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 µsec 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 BPage 2

Output Voltages and Maximum Rated Loads

OUTPUT #1 OUTPUT #2 OUTPUT #3 OUTPUT #4

MODEL NUMBER VOUT IMAX VNOM IMAX/IPK VNOM IMAX/IPK VNOM IMAX/IPK

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

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 050°C

Storage -20 +70 °C

Temperature Coefficient (TC) After half hour warm-up ± 0.02 %/°C

DNX350 4/2002 REV B Page 3

Mechanical

TOP MOUNTED
FAN

1

4.85

3.90

3.60

TB1

1

2

MINUS

3

PLUS

3.34

6.94

NO. 1 +V

OUTPUTS

NO. 1 -V

OUTPUT
3
ADJ.

OUTPUT

5

ADJ.

OUTPUT

FAN OPTION

4

ADJ.

1

AIR FLOW

0.62

0.55

6-32 MOUNTING LOCATED ON BOTTOM (4x)

0.25

8.50

9.00 3.00

END MOUNTED

0.250

8.50

FAN

J10

3
2
1

AIR FLOW

1.00

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.

9.00

TB2

0.550

3.900

6-32 THD
4 PLC'S

4.850

1

1.99

1

2.15

TB2

J9

OUTPUT NO. 1
RETURN
10-32 STUD

OUTPUT NO. 1
10-32 STUD

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

4N/C

5 Start Up Sync.

6N/C

7 Remote Inhibit

8 Current Share

9 Control Signal Rtn

*Used with end-mounted fan cover,
option “V”

DNX350 4/2002 REV BPage 4