International Safety Standard Approvals

VDE0805/EN60950/IEC950 File No. 10401-3336-1075

Licence No. 1629

UL1950 File No. E136005

CSA C22.2 No. 950 File No. LR41062C

NFC15 SERIES

Single and dual output

[ 2 YEAR WARRANTY ]

• 4:1 input voltage range

• Low profile 0.46 inch

• 10.2 Watts/cubic inch

• 80% efficiency

• UL, CSA and VDE safety approvals

• Inhibit/sync function

• Overvoltage protection

• Fixed frequency operation

The NFC15 series of DC/DC converters are economical 15 Watt, hybrid DC/DC

converters that accept input voltages ranging from 20VDC to 72VDC. A

constant efficiency of 80% is maintained over the entire input voltage range.

The isolated floating output can be referenced as either positive or negative, or

stacked in series for higher output voltages. All models include current limited

outputs, overvoltage protection and remote on/off. Packaged in a low profile 2.0

x 1.6 x 0.46 inch case, the NFC15 is ideal for space critical applications in

telecommunications, data communications and distributed power networks.

PAGE 116

GENERAL SPECIFICATIONS

Efficiency

80% typical

Isolation voltage

Input/output

500VDC

Switching frequency

Fixed

200kHz ±5.0%

Approvals and

VDE0805, EN60950

standards

IEC950, UL1950

CSA C22.2 No. 950

Case material

Aluminum alloy, hard

black anodized finish

Cover material

10% glass reinforced

polyetherimide GE ULTEM

#2110 or equivalent

Material flammability

UL94V-0

Weight

45g (1.6oz)

MTBF

MIL-HDBK-217F

>436,000 hours

Bellcore 332

>950,000 hours

ENVIRONMENTAL SPECIFICATIONS

Thermal performance

Operating ambient,

-25°C to +60°C

(See Graph 2)

Option (See Note 6)

-40°C to +60°C

Non-operating amb.

-55°C to +125°C

Max. case temperature,

+105°C max.

(See Note 7)

Derating

See curve

Cooling

Free air convection cooled

OUTPUT SPECIFICATIONS

Voltage accuracy

Single output

±1.0%

Dual output

±1.5%

Voltage adjustability

All outputs

±10%

Line regulation

LL to HL at FL, singles

±0.5% max.

LL to HL at FL, duals

±0.5% max.

Load regulation

FL to NL, single output

±1.0% max.

FL to NL, dual output

±5.0% max.

Ripple and noise

5Hz to 20MHz

75mV pk-pk max.

15mV rms

Temperature coefficient

±0.02%/°C, max.

Overvoltage protection

See table

Clamp

Short circuit protection

Continuous

(See Note 8)

automatic recovery

INPUT SPECIFICATIONS

Input voltage range

48VDC nominal

20 to 72VDC

Input filter (See Note 5)

External capacitor

Input current

No load

15mA

Full load

400mA

Remote ON/OFF

Logic compatibility

CMOS/TTL

Logic on

Logic high or open

Logic off

Logic low or Jumper

pin 2 and 4

Frequency

Switching frequency

synchronization

±10%

Synchronization

Negative going pulse

function

on pin 4 max.

25% duty cycle

Surge protection

100V for 100ms