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 highperformance, 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 SPECIFICATIONS All specifications are typical at nominal input, full load at 25°C unless otherwise stated OUTPUT SPECIFICATIONS EMC CHARACTERISTICS Voltage accuracy ±1.0% Line regulation (LL to HL) Singles/dual positives Dual negatives ±0.1% ±0.1% Load regulation (not incl. cross reg.) Full load to minimum load S3V3 Singles/dual positives Dual negatives ±0.2% ±0.1% ±0.1% Minimum load Singles Duals (for imbalanced loads) Ripple and noise 20MHz bandwidth S3V3, S05, D05 S12, D12 All models None 10% 75mV pk-pk max. 100mV pk-pk max. 20mV rms max. Temperature coefficient ±0.02%/°C Overvoltage protection See Application Note 107 Short circuit protection Short <20mΩ Hiccup Continuous automatic recovery Transient response 25% load step Load cross regulation (See Note 1) 10% load to full load, either output ±2.0% max. dev., 300µs recovery to within total error band ±7.0% INPUT SPECIFICATIONS Input voltage range 48Vin nominal Input fuse HRC recommended Max. input rise and fall time 48V ETS300-132 UVLO turn ON voltage UVLO turn OFF voltage (See Note 4) (See Note 4) Remote ON/OFF Logic compatibility ON OFF 18 to 75VDC 2.0A ETS 300 386-1 table 5 Conducted emissions Radiated emissions Immunity: ESD air ESD contact EFT DC power EFT signal Radiated field enclosure Surges indoor signal Conducted (DC power) Conducted (signal) Input transients CMOS/TTL/Open Collector Open circuit or >2VDC <1.2VDC EN61000-4-2 8kV (NP), 15kV (RP) EN61000-4-2 6kV (NP), 8kV (RP) EN61000-4-4 2kV (NP), 4kV (LFS) EN61000-4-4 1kV (NP), 2kV (LFS) EN61000-4-3 10V/m (NP) EN61000-4-5 500V (RP) EN61000-4-6 10V (NP) EN61000-4-6 10V (NP) ETS 300 132-2, ETR 283 GENERAL SPECIFICATIONS Efficiency Overtemp. shutdown Isolation voltage Switching frequency Approvals and standards (See Notes 6,7,8) Material flammability Weight MTBF (Representative model 48S05 @ 48Vin) See table 120˚C Input/output test voltage 1500VDC Fixed 400kHz EN60950 UL1950 File No. E136005 UL94V-0 26g (0.92 oz) MIL-HDBK-217F 400,000 hours Parts stress method Ground Benign @ 25°C ENVIRONMENTAL SPECIFICATIONS Thermal performance 5V/ms 92% 86% EN55022, ext. cap. (Note 5) Level A EN55022, external filter, Level B VDE0878, 48V models EN55022-B See App. Note 107 ETS 300 019-2-3 Air temperature Relative humidity Operating ambient -40°C to +60°C, temperature (See Note 9) Non-operating -55°C to +125°C Classes T3.1, 3.2, 3.3, 3.5 Low: IEC 68-2-1 -40°C High: IEC 68-2-2 +60°C Change: IEC 68-2-14 -40°C to +60°C IEC 68-2-56 10% to 100% RH IEC 68-2-30 Condensation 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 VOLTAGE OUTPUT VOLTAGE OVERVOLTAGE PROTECTION (2,3) OUTPUT CURRENT (MAX.) TYPICAL EFFICIENCY MODEL 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 1 2 3 4 5 6 7 8 9 PIN CONNECTIONS Negative output voltage deviation when either load is changed. For TVS/Zener specifications please see Application Note 107. On dual output models, OVP protection is on positive outputs only. With respect to minimum input voltage. With one external 4µF capacitor across the input. Unit provides basic insulation up to the 75VDC maximum input voltage. Maximum continuous output power not to exceed 20 Watts. User must provide 2A HRC (recommended) in line fuse in order to comply with safety approvals. Download Application Note 107 and the full data sheet from our website. CAUTION: Hazardous internal voltages and high temperatures. Ensure that unit is not user accessible. MAX. TEMPERATURES FOR FULL RATED OUTPUT CURRENT MODEL FULL Vin RANGE Vin <60VDC 48S3V3 50˚C 50˚C 48S05 55˚C 60˚C 48S12 50˚C 55˚C 48D05 55˚C 60˚C 48D12 50˚C 60˚C PIN NUMBER SINGLE OUTPUT DUAL OUTPUT 1 + Input + Input 2 – Input - Input 3 No Pin No Pin 4 Remote On/Off Remote On/Off 5 No Pin + Output 6 + Output Common 7 - Output - Output 8 Trim Trim EXTERNAL OUTPUT TRIMMING All models can be externally trimmed by ±10% using either method shown below. See Application Note 107 for details. + Output TRIM DOWN - Output TRIM UP Trim Rated Output Current 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: ✔ Application Note ✔ Longform Data Sheet www.artesyn.com File Name: CXA20.PDF Rev: 11 Jan 2002 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 Ø0.040 ±0.002 (Ø1.02 ±0.05) 0.14 ±0.02 (3.60 ±0.5) 2.00 ±0.02 (50.80 ±0.5) 1.80 (45.72) 5 0.70 (17.78) 1.60 ±0.02 (40.64 ±0.5) 0.10 (2.54) 0.20 (5.08) 1 0.60 (15.24) 0.50 (12.70) 6 2 BOTTOM VIEW 7 0.30 (7.62) 0.70 (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: ✔ Application Note ✔ Longform Data Sheet www.artesyn.com File Name: CXA20.PDF Rev: 11 Jan 2002