CXA20 Series Single and dual output DC/DC CONVERTERS 20W DC/DC Converters 1 • 4:1 input voltage range • No minimum load on singles • 6A on 3.3V output (@ 48Vin) at 50˚C in still air • Wide operating temperature with overtemperature protection • ±10% output voltage trim • Remote On/Off control • Overvoltage protection The CXA20 is a new 20W addition to the CXA family of open-frame, isolated, DC/DC converters. The five model series features a 4:1 input voltage range of 18 to 75VDC, making it suitable for a wide variety of communications and distributed power applications. With its 2.0 x 1.6 inch industry standard footprint, the CXA20 provides an easy upgrade option for new and existing Artesyn customers seeking a high- performance, cost-effective power supply. The CXA20 is available in output voltages of 3.3V, 5V, 12V, ±5V and ±12V. The 3.3V version delivering up to 6A is fully rated to 20W. Typical efficiency for the CXA20 is 83 percent. The CXA20 offers remote on/off, as well as overvoltage, overtemperature and short circuit protection features. 2 YEAR WARRANTY All specifications are typical at nominal input, full load at 25°C unless otherwise stated SPECIFICATIONS OUTPUT SPECIFICATIONS EMC CHARACTERISTICS ETS 300 386-1 table 5 Voltage accuracy ±1.0% Conducted emissions EN55022, ext. cap. (Note 5) Level A EN55022, external filter, Level B Line regulation Singles/dual positives ±0.1% VDE0878, 48V models (LL to HL) Dual negatives ±0.1% Radiated emissions EN55022-B See App. Note 107 Load regulation Full load to minimum load Immunity: (not incl. cross reg.) S3V3 ±0.2% ESD air EN61000-4-2 8kV (NP), 15kV (RP) Singles/dual positives ±0.1% ESD contact EN61000-4-2 6kV (NP), 8kV (RP) Dual negatives ±0.1% EFT DC power EN61000-4-4 2kV (NP), 4kV (LFS) EFT signal EN61000-4-4 1kV (NP), 2kV (LFS) Minimum load Singles None Radiated field enclosure EN61000-4-3 10V/m (NP) Duals (for imbalanced loads) 10% Surges indoor signal EN61000-4-5 500V (RP) Conducted (DC power) EN61000-4-6 10V (NP) Ripple and noise S3V3, S05, D05 75mV pk-pk max. Conducted (signal) EN61000-4-6 10V (NP) 20MHz bandwidth S12, D12 100mV pk-pk max. Input transients ETS 300 132-2, ETR 283 All models 20mV rms max. GENERAL SPECIFICATIONS Temperature coefficient ±0.02%/°C Efficiency See table Overvoltage protection See Application Note 107 Overtemp. shutdown 120˚C Short circuit protection Hiccup Continuous Isolation voltage Input/output test voltage 1500VDC Short <20mΩ automatic recovery Switching frequency Fixed 400kHz Transient response 25% load step ±2.0% max. dev., Approvals and standards EN60950 300μs recovery to (See Notes 6,7,8) UL1950 File No. E136005 within total error band Material flammability UL94V-0 Load cross regulation 10% load to full load, ±7.0% Weight 26g (0.92 oz) (See Note 1) either output MTBF MIL-HDBK-217F 400,000 hours (Representative model Parts stress method INPUT SPECIFICATIONS 48S05 @ 48Vin) Ground Benign @ 25°C Input voltage range 48Vin nominal 18 to 75VDC ENVIRONMENTAL SPECIFICATIONS Input fuse HRC recommended 2.0A Thermal performance Operating ambient -40°C to +60°C, temperature (See Note 9) Max. input rise 48V ETS300-132 5V/ms Non-operating -55°C to +125°C and fall time ETS 300 019-2-3 Classes T3.1, 3.2, 3.3, 3.5 UVLO turn ON voltage (See Note 4) 92% Air temperature Low: IEC 68-2-1 -40°C UVLO turn OFF voltage (See Note 4) 86% High: IEC 68-2-2 +60°C Change: IEC 68-2-14 -40°C to +60°C Remote ON/OFF Logic compatibility CMOS/TTL/Open Collector Relative humidity IEC 68-2-56 10% to 100% RH ON Open circuit or >2VDC IEC 68-2-30 Condensation OFF <1.2VDC File Name: CXA20.PDF Rev: 11 Jan 2002 CXA20 Series Single and dual output DC/DC CONVERTERS 20W DC/DC Converters 2 For the most current data and application support visit www.artesyn.com/powergroup/products.htm INPUT OUTPUT OVERVOLTAGE OUTPUT TYPICAL MODEL (2,3) VOLTAGE VOLTAGE PROTECTION CURRENT (MAX.) EFFICIENCY NUMBER 18-75VDC 3.3V 3.7V 6.0A 80% CXA20-48S3V3 18-75VDC 5.0V 6.67V 4.0A 83% CXA20-48S05 18-75VDC 12V 14.25V 1.66A 83% CXA20-48S12 18-75VDC ±5V 6.67V 2.0A ea. 84% CXA20-48D05 18-75VDC ±12V 14.25V 0.83A ea. 84% CXA20-48D12 Notes PIN CONNECTIONS 1 Negative output voltage deviation when either load is changed. PIN NUMBER SINGLE OUTPUT DUAL OUTPUT 2 For TVS/Zener specifications please see Application Note 107. 3 On dual output models, OVP protection is on positive outputs only. 1 + Input + Input 4 With respect to minimum input voltage. 5 With one external 4μF capacitor across the input. 2 – Input - Input 6 Unit provides basic insulation up to the 75VDC maximum input voltage. 7 Maximum continuous output power not to exceed 20 Watts. 3 No Pin No Pin 8 User must provide 2A HRC (recommended) in line fuse in order to comply 4 Remote On/Off Remote On/Off with safety approvals. 9 Download Application Note 107 and the full data sheet from our website. 5 No Pin + Output 6 + Output Common CAUTION: Hazardous internal voltages and high temperatures. 7 - Output - Output Ensure that unit is not user accessible. 8 Trim Trim MAX. TEMPERATURES FOR FULL RATED OUTPUT CURRENT EXTERNAL OUTPUT TRIMMING All models can be externally trimmed by ±10% using either MODEL FULL Vin RANGE Vin <60VDC method shown below. See Application Note 107 for details. 48S3V3 50˚C 50˚C + Output 48S05 55˚C 60˚C 48S12 50˚C 55˚C - Output TRIM 48D05 55˚C 60˚C DOWN TRIM 48D12 50˚C 60˚C UP Trim 100 80 75% 60 40 20 0 -40˚C -20˚C 0˚ 20˚ 40˚ 60˚ 80˚ 100˚ Ambient Temperature Derating Curve Output Current vs Temperature S3V3 Natural Convection (<0.1m/s airflow) Please consult our website for the following items: 4 Application Note 4 Longform Data Sheet www.artesyn.com File Name: CXA20.PDF Rev: 11 Jan 2002 Rated Output Current CXA20 Series Single and dual output DC/DC CONVERTERS 20W DC/DC Converters 3 For the most current data and application support visit www.artesyn.com/powergroup/products.htm 0.02 –0.004 (0.50 –0.1) 0.413 (10.50) MAX. OPEN FRAME HEIGHT STAND-OFFS 4 PLACES Ş0.040 –0.002 (Ş1.02 –0.05) 0.14 –0.02 (3.60 –0.5) 2.00 –0.02 (50.80 –0.5) 1.80 (45.72) 5 0.10 0.70 (2.54) (17.78) 0.20 0.50 (5.08) (12.70) 6 1.60 –0.02 1 0.30 (40.64 –0.5) (7.62) BOTTOM 7 0.60 2 0.70 VIEW (15.24) (17.78) 8 4 ALL DIMENSIONS IN INCHES (mm) General tolerance –0.010 (–0.25) unless otherwise specified Data Sheet © Artesyn Technologies® 2002 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. Please consult our website for the following items: 4 Application Note 4 Longform Data Sheet www.artesyn.com File Name: CXA20.PDF Rev: 11 Jan 2002