NFC20 SERIES Single and dual output • • • • • • • • 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. [ 2 YEAR WARRANTY ] SPECIFICATION 20 Watts output power 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 All specifications are typical at nominal input, full load at 25°C unless otherwise stated OUTPUT SPECIFICATIONS GENERAL SPECIFICATIONS Voltage accuracy ±0.5% Efficiency 83% typical Voltage adjustability All outputs ±10% Isolation voltage Input/output Line regulation LL to HL, single output LL to HL, dual output ±0.1% ±0.1% Switching frequency Fixed Load regulation FL to NL, single output FL to NL, dual output ±0.5%, max. ±3.0%, max. Ripple and noise (5Hz to 20MHz) Singles Duals Temperature coefficient 75mV pk-pk, max., 20mV rms 100mV pk-pk, max. Single output Dual output Short circuit protection (Clamp) (See Note 7) 125% Vout 125% Vout total Continuous automatic recovery INPUT SPECIFICATIONS 24VDC 48VDC No load input current VDE0805, EN60950 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 (See Note 5) Surge protection 24VDC 48VDC 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 External capacitor 50V for 100ms 100V for 100ms DERATING CURVE CMOS/TTL Logic high or open Logic low or Jumper pin 2 and 4 Frequency synchronization Switching frequency ±10% Synchronization function Negative going pulse on pin 4, max. 25% duty cycle Output Power (Watts) 20W 0 -40° C -20° C 0° C 20° C 40° C Ambient Temperature PAGE 120 260,000 hours ENVIRONMENTAL SPECIFICATIONS 18 to 36VDC 36 to 72VDC 20mA Input filter Remote ON/OFF Logic compatibility Logic ON Logic OFF Approvals and standards '-4' Option Input voltage range 200kHz ±5.0% ±0.02%/°C max. Overvoltage protection 1000VAC/710VDC 60° C 80° C 105° C 100° C DC/DC CONVERTERS | 20W DC/DC 20 Watt Wide input DC/DC converters INPUT VOLTAGE INPUT CURRENT REGULATION OUTPUT VOLTAGE OVP OUTPUT CURRENT 18-36VDC 5VDC 6.2VDC 4000mA 1083mA 81% ±0.1% ±0.5% NFC20-24S05 18-36VDC 12VDC 15VDC 1670mA 1030mA 83% ±0.1% ±0.5% NFC20-24S12 18-36VDC 15VDC 18VDC 1330mA 1030mA 83% ±0.1% ±0.5% NFC20-24S15 18-36VDC ±12VDC 30VDC ±833mA 1040mA 83% ±0.1% ±3% NFC20-24D12 18-36VDC ±15VDC 36VDC ±666mA 1030mA 84% ±0.1% ±3% NFC20-24D15 36-72VDC 5VDC 6.2VDC 4000mA 527mA 82% ±0.1% ±0.5% NFC20-48S05 36-72VDC 12VDC 15VDC 1670mA 515mA 83% ±0.1% ±0.5% NFC20-48S12 36-72VDC 15VDC 18VDC 1330mA 515mA 83% ±0.1% ±0.5% NFC20-48S15 36-72VDC ±12VDC 30VDC ±833mA 510mA 85% ±0.1% ±3% NFC20-48D12 36-72VDC ±15VDC 36VDC ±666mA 505mA 86% ±0.1% ±3% NFC20-48D15 (1) (2) EFFICIENCY Notes 1 2 3 4 5 6 7 Nominal input voltages are 24VDC and 48VDC. Maximum figure, at full load. Measured from low line to high line at full load. Measured from full load to no load. An external capacitor, connected across the input is required for normal operation. The capacitor should be capable of withstanding 600mA of ripple current. Recommended capacitors: Nippon Chemi-Con SXE series, 56µF/100V for the NFC20-48xxx and the Nippon Chemi-Con LXF series, 560µF/50V for the NFC20-24xxx. Extended operating temperature range is available on the following models: NFC20-24S05, -24S12, -24S15, -48S05, -48S12 and -48S15. The suffix –4 must be added to the NFC20 model number, e.g. NFC20-48S05-4. Long term continuous operation into a short circuit will compromise the reliability of the unit. 0.46 (11.7) LINE (3) LOAD MODEL NUMBER (4) PIN CONNECTIONS PIN NUMBER SINGLE OUTPUT DUAL OUTPUT 1 + Input + Input 2 – Input – Input 3 No Pin No Pin 4 Control Control 5 No Pin + Output 6 + Output Common 7 – Output – Output 8 Trim Trim 5 Stand-off 0.020 ± 0.010 EXTERNAL OUTPUT TRIMMING 0.15 (3.8) Min. 1.80 (45.7) 0.10 (2.5) 0.040 Dia. (1.0) 2.00 (50.8) 5 0.70 (17.8) 1.60 (40.6) 0.20 (5.1) + OUT 0.50 (12.7) 10K 6 1 0.40 0.60 (10.2) (15.2) 0.40 (10.2) Output can be externally trimmed by ±10% using either method shown below TRIM DOWN - OUT 2 BOTTOM VIEW 3 4 7 TRIM UP 0.70 (17.8) TRIM UP/DOWN TRIM 8 Connections for Output Voltage Trim ALL DIMENSIONS IN INCHES (mm) TOLERANCES .XX = ±0.02, .XXX = ±0.005 0.40 (10.2) International Safety Standard Approvals VDE0805/EN60950/IEC950 File No. 10401-3336-1074 Licence No. 1628 UL1950 Reg. File No. E136005 Data Sheet © Artesyn Technologies® 2000 The information and specifications contained in this data sheet are believed to be correct at time of publication. However, Artesyn Technologies accepts no responsibility for consequences arising from printing errors or inaccuracies. Specifications are subject to change without notice. No rights under any patent accompany the sale of any such product(s) or information contained herein. http://www.artesyn.com PAGE 121 DS_NFC20_20000101.PDF CSA C22.2 No. 950 File No. LR41062C