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CXA20 Series
DC-DC CONVERTERS
* * * * * * * *
Single and dual output
20 W DC-DC Converters 1
4:1 input voltage range No minimum load on singles 6 A on 3.3 V output (@ 48 Vin) at 50 C in still air Wide operating temperature with overtemperature protection 10% output voltage trim Remote On/Off control Overvoltage protection Available RoHS complaint
The CXA20 is a new 20 W 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 Vdc to 75 Vdc, 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 3.3 V, 5 V, 12 V, 5 V and 12 V. The 3.3 V version delivering up to 6 A is fully rated to 20 W. Typical efficiency for the CXA20 is 83%. The CXA20 offers remote ON/OFF as well as overvoltage, overtemperature and short circuit protection features.
All specifications are typical at nominal input, full load at 25 C unless otherwise stated
2 YEAR WARRANTY
SPECIFICATIONS
OUTPUT SPECIFICATIONS Voltage accuracy Line regulation (LL to HL) Load regulation (not incl. cross reg.) Singles/dual positives Dual negatives Full load to minimum load S3V3 Singles/dual positives Dual negatives Singles Duals (for imbalanced loads) S3V3, S05, D05 S12, D12 All models 1.0% 0.1% 0.1% 0.2% 0.1% 0.1% None 10%
EMC CHARACTERISTICS 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 EN55022, ext. cap. (Note 5) Level A EN55022, external filter, Level B VDE0878, 48V models EN55022-B See App. Note 107 EN61000-4-2 8 kV (NP), 15 kV (RP) EN61000-4-2 6 kV (NP), 8 kV (RP) EN61000-4-4 2 kV (NP), 4 kV (LFS) EN61000-4-4 1 kV (NP), 2 kV (LFS) EN61000-4-3 10 V/m (NP) EN61000-4-5 500 V (RP) EN61000-4-6 10 V (NP) EN61000-4-6 10 V (NP) ETS 300 132-2, ETR 283
Minimum load Ripple and noise 20 MHz bandwidth Temperature coefficient Overvoltage protection Short circuit protection Short <20 m Transient response
75 mV pk-pk max. 100 mV pk-pk max. 20 mV rms max. 0.02%/C
GENERAL SPECIFICATIONS Efficiency Overtemp. shutdown Isolation voltage Switching frequency Approvals and standards (See Notes 6,7,8) Material flammability Weight MTBF (Representative model 48S05J @ 48 Vin) See table 120 C Input/output test voltage 1500 Vdc Fixed 400 kHz EN60950 UL1950 File No. E136005 UL94V-0 26 g (0.92 oz) MIL-HDBK-217F 3,485,000 hours Parts stress method Ground Benign @ 25 C
See Application Note 107 Hiccup 25% load step Continuous automatic recovery 2.0% max. dev., 300 s recovery to within total error band 7.0%
Load cross regulation (See Note 1) INPUT SPECIFICATIONS Input voltage range Input fuse Max. input rise and fall time UVLO turn ON voltage UVLO turn OFF voltage Remote ON/OFF Logic compatibility ON OFF
10% load to full load, either output
48 Vin nominal HRC recommended 48 V ETS300-132 (See Note 4) (See Note 4)
18-75 Vdc 2.0 A 5 V/ms 92% 86%
ENVIRONMENTAL SPECIFICATIONS Thermal performance 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 (02): 09 Dec 2005
ETS 300 019-2-3 Air temperature
CMOS/TTL/Open Collector Open circuit or >2 Vdc <1.2 Vdc
Relative humidity
CXA20 Series
DC-DC CONVERTERS 20 W DC-DC Converters
INPUT VOLTAGE 18-75 Vdc 18-75 Vdc 18-75 Vdc 18-75 Vdc 18-75 Vdc Notes OUTPUT VOLTAGE 3.3 V 5V 12 V 5 V 12 V
Single and dual output
2
For the most current data and application support visit www.artesyn.com/powergroup/products.htm
OVERVOLTAGE PROTECTION (2,3) 3.7 V 6.67 V 14.25 V 6.67 V 14.25 V OUTPUT CURRENT (MAX.) 6A 4A 1.66 A 2 A ea. 0.83 A ea. TYPICAL EFFICIENCY 80% 83% 83% 84% 84% PIN CONNECTIONS PIN NUMBER 1 2 3 4 5 6 7 8 SINGLE OUTPUT + Input - Input No Pin Remote On/Off No Pin + Output - Output Trim DUAL OUTPUT + Input - Input No Pin Remote On/Off + Output Common - Output Trim MODEL NUMBER (10,11) CXA20-48S3V3J CXA20-48S05J CXA20-48S12J CXA20-48D05J CXA20-48D12J
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 4 F capacitor across the input. Unit provides basic insulation up to the 75 Vdc maximum input voltage. Maximum continuous output power not to exceed 20 Watts. User must provide 2 A HRC (recommended) in line fuse in order to comply with safety approvals. 9 Download Application Note 107 and the full data sheet from our website. 10 The `J' suffix indicates that these parts are Pb-free (RoHS 6/6) compliant. TSE RoHS 5/6 (non Pb-free) compliant versions may be available on special request, please contact your local sales representative for details. 11 NOTICE: Some models do not support all options. Please contact your local Artesyn representative or use the on-line model number search tool at http://www.artesyn.com/powergroup/products.htm to find a suitable alternative.
1 2 3 4 5 6 7 8
MAX. TEMPERATURES FOR FULL RATED OUTPUT CURRENT MODEL 48S3V3J 48S05J 48S12J 48D05J 48D12J FULL Vin RANGE 50 C 55 C 50 C 55 C 50 C Vin <60 Vdc 50 C 60 C 55 C 60 C 60 C
EXTERNAL OUTPUT TRIMMING All models can be externally trimmed by 10% using either method shown below. See Application Note 107 for details.
+ Output
- Output
TRIM DOWN TRIM UP
Trim
100 Rated Output Current
CAUTION: Hazardous internal voltages and high temperatures. Ensure that unit is not user accessible.
75%
80
60
40
20
0 -40C -20C 0 20 40 60 80 100
Ambient Temperature
International Safety Standard Approvals
Derating Curve Output Current vs Temperature S3V3J Natural Convection (<0.1 m/s airflow) UL/cUL CAN/CSA 22.2 No. 60950-00 : UL 60950 File No. E174104 VDE Certificate No.112836. File No. 10401-3336-0154 CB Report and Certificate to IEC60950, Licence No. 121914
File Name: CXA20.pdf Rev (02): 09 Dec 2005
CXA20 Series
DC-DC CONVERTERS 20 W DC-DC Converters
0.02 0.004 (0.50 0.1)
Single and dual output
3
For the most current data and application support visit www.artesyn.com/powergroup/products.htm
0.413 (10.50) MAX. OPEN FRAME HEIGHT O0.040 0.002 (O1.02 0.05) 0.14 0.02 (3.60 0.5)
STAND-OFFS 4 PLACES
2.00 0.02 (50.80 0.5) 1.80 (45.72)
5 0.70 (17.78) 0.20 (5.08) 0.10 (2.54) 6 1 0.60 (15.24) 2
0.50 (12.70)
1.60 0.02 (40.64 0.5)
BOTTOM VIEW
7
0.30 (7.62) 0.70 (17.78)
4
8
ALL DIMENSIONS IN INCHES (mm) General tolerance 0.010 (0.25) unless otherwise specified
Datasheet (c) Artesyn Technologies(R) 2005 The information and specifications contained in this datasheet 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 (02): 09 Dec 2005

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