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20 Watts output power
Power density 13.6W/in
3
2:1 input voltage range
Remote ON/OFF control
UL, CSA and VDE safety approvals
Overvoltage protection
Extended operating temperature range
Fixed switching frequency
[ 2 YEAR WARRANTY ]
The NFC20 series of DC/DC converters offers 20 Watts of output power from
the industry standard 2 x 1.6 x 0.46 inch case without a heatsink. Advantages of
the NFC20 include increased power density, fixed switching frequency, tight line
and load regulation, reduced board area requirements and many standard
features. Among these features are remote on/off control, overvoltage
protection, synchronization function and an extended operating temperature
range option. Input voltage ranges of 18-36VDC and 36-72VDC mean that the
NFC20 is ideally suited to process control, industrial automation, distributed
power and telecommunications applications.
SPECIFICATION
OUTPUT SPECIFICATIONS
Voltage accuracy
Voltage adjustability
Line regulation
Load regulation
Ripple and noise
(5Hz to 20MHz)
Temperature coefficient
Overvoltage protection
Short circuit protection
(Clamp)
All specifications are typical at nominal input, full load at 25擄C unless otherwise stated
GENERAL SPECIFICATIONS
鹵0.5%
Efficiency
Isolation voltage
Switching frequency
Approvals and
standards
Case material
Cover material
Input/output
Fixed
83% typical
1000VAC/710VDC
200kHz 鹵5.0%
VDE0805, EN60950
IEC950, UL1950
CSA C22.2 No. 950
Aluminum alloy, hard
black anodized finish
10% glass reinforced
polyetherimide GE ULTEM
#2110 or equivalent
UL94V-0
45g (1.6oz)
MIL-HDBK-217F
260,000 hours
All outputs
LL to HL, single output
LL to HL, dual output
FL to NL, single output
FL to NL, dual output
Singles
Duals
鹵10%
鹵0.1%
鹵0.1%
鹵0.5%, max.
鹵3.0%, max.
75mV pk-pk, max.,
20mV rms
100mV pk-pk, max.
鹵0.02%/擄C max.
Single output
Dual output
(See Note 7)
125% Vout
125% Vout total
Continuous
automatic recovery
Material flammability
Weight
MTBF
INPUT SPECIFICATIONS
Input voltage range
No load input current
Input filter
Surge protection
Remote ON/OFF
Logic compatibility
Logic ON
Logic OFF
Frequency
synchronization
Synchronization
function
(See Note 5)
24VDC
48VDC
24VDC
48VDC
18 to 36VDC
36 to 72VDC
20mA
External capacitor
50V for 100ms
100V for 100ms
CMOS/TTL
Logic high or open
Logic low or Jumper
pin 2 and 4
Switching frequency
鹵10%
Negative going pulse
on pin 4, max. 25%
duty cycle
ENVIRONMENTAL SPECIFICATIONS
Thermal performance
Operating ambient
-25擄C to +60擄C
Option (See Note 6)
-40擄C to +60擄C
Non-operating amb. -55擄C to +125擄C
Max. case temperature, +110擄C max.
Derating
See curve
Cooling, vertical mount
Free air
convection cooled
DERATING CURVE
Output Power (Watts)
20W
0
-40擄 C -20擄 C
0擄 C
20擄 C
40擄 C
60擄 C
80擄 C
Ambient Temperature
'-4' Option
105擄 C
100擄 C
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