Content last revised on December 25, 2024
• DC/DC converters 20 Watts output power
• Wide input DC/DC converters
• Power density 13.6W/in3
• 2:1 input voltage range
• Remote ON/OFF control
• UL, CSA and VDE safety approvals
• Overvoltage protection
• Extended operating temperature range
• Fixed switching frequency
The NFC20 series of DC/DC converters offers 20 Watts of output power fromthe industry standard 2 x 1.6 x 0.46 inch case without a heatsink. Advantages ofthe NFC20 include increased power density, fixed switching frequency, tight lineand load regulation, reduced board area requirements and many standardfeatures. Among these features are remote on/off control, overvoltageprotection, synchronization function and an extended operating temperaturerange option. Input voltage ranges of 18-36VDC and 36-72VDC mean that theNFC20 is ideally suited to process control, industrial automation, distributedpower and telecommunications applications.
SPECIFICATION All specifications are typical at nominal input, full load at 25°C unless otherwise stated
OUTPUT SPECIFICATIONS
Voltage accuracy ±0.5%
Voltage adjustability All outputs ±10%
Output voltange 5VDC
Output current 4000mA
Line regulation LL to HL, single output ±0.1% and LL to HL, dual output ±0.1%
Load regulation FL to NL, single output ±0.5%, max. and FL to NL, dual output ±3.0%, max.
Ripple and noise (5Hz to 20MHz) Singles 75mV pk-pk, max.,and 20mV rms
Ripple and noise (5Hz to 20MHz) Duals 100mV pk-pk, max.
Temperature coefficient ±0.02%/°C max.
Overvoltage protection Single output 125% Vout 6.2VDC and Dual output 125% Vout total
Short circuit protection (Clamp) (See Note 7) Continuous and automatic recovery
INPUT SPECIFICATIONS
Input voltage range 48VDC (36 to 72VDC)
No load input current 20mA
Input current 527mA
Input filter (See Note 5) External capacitor
Surge protection 24VDC 50V for 100ms or 48VDC 100V for 100ms
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
functionon pin 4, max. 25% duty cycle
GENERAL SPECIFICATIONS
Efficiency 82% typical
Isolation voltage Input/output 1000VAC/710VDC
Switching frequency Fixed 200kHz ±5.0%
Approvals and VDE0805, EN60950
standards IEC950, UL1950CSA 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-217 F260,000 hours
ENVIRONMENTAL SPECIFICATIONS
Thermal performance Operating ambient -25°C to +60°C Option (See Note 6) -40°C to +60°C
Non-operating amb. -55°C to +125°C Max. case temperature, +110°C max.
Derating See curve Cooling, vertical mount Free air convection cooled