CXA20 Series Single and dual output W s 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. 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 8 kV (NP), 15 kV (RP) Singles/dual positives 0.1% ESD contact EN61000-4-2 6 kV (NP), 8 kV (RP) Dual negatives 0.1% EFT DC power EN61000-4-4 2 kV (NP), 4 kV (LFS) EFT signal EN61000-4-4 1 kV (NP), 2 kV (LFS) Minimum load Singles None Radiated field enclosure EN61000-4-3 10 V/m (NP) Duals (for imbalanced loads) 10% Surges indoor signal EN61000-4-5 500 V (RP) Conducted (dc power) EN61000-4-6 10 V (NP) Ripple and noise S3V3, S05, D05 75 mV pk-pk max. Conducted (signal) EN61000-4-6 10 V (NP) 20 MHz bandwidth S12, D12 100 mV pk-pk max. Input transients ETS 300 132-2, ETR 283 All models 20 mV 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 1500 Vdc Short <20 m automatic recovery Switching frequency Fixed 400 kHz Transient response 25% load step 2.0% max. dev., Approvals and standards EN60950 300 s 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 26 g (0.92 oz) (See Note 1) either output MTBF MIL-HDBK-217F 3,485,000 hours (Representative model Parts stress method INPUT SPECIFICATIONS 48S05J 48 Vin) Ground Benign 25 C Input voltage range 48 Vin nominal 18-75 Vdc ENVIRONMENTAL SPECIFICATIONS Input fuse HRC recommended 2.0 A Thermal performance Operating ambient -40 C to +60 C, temperature (See Note 9) Max. input rise 48 V ETS300-132 5 V/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 >2 Vdc IEC 68-2-30 Condensation OFF <1.2 Vdc File Name: cxa20.pdf Rev (02): 09 Dec 2005 Converter DC-DC 20 CONVERTERS DC-DCCXA20 Series Single and dual output W s 2 ti s www s g r INPUT OUTPUT OVERVOLTAGE OUTPUT TYPICAL MODEL (2,3) (10,11) VOLTAGE VOLTAGE PROTECTION CURRENT (MAX.) EFFICIENCY NUMBER 18-75 Vdc 3.3 V 3.7 V 6 A 80% CXA20-48S3V3J 18-75 Vdc 5 V 6.67 V 4 A 83% CXA20-48S05J 18-75 Vdc 12 V 14.25 V 1.66 A 83% CXA20-48S12J 18-75 Vdc 5 V 6.67 V 2 A ea. 84% CXA20-48D05J 18-75 Vdc 12 V 14.25 V 0.83 A ea. 84% CXA20-48D12J NNootteess 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 4 F capacitor across the input. 2 Input - Input 6 Unit provides basic insulation up to the 75 Vdc maximum input voltage. 7 Maximum continuous output power not to exceed 20 Watts. 3 No Pin No Pin 8 User must provide 2 A 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 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 6 + Output Common special request, please contact your local sales representative for details. 11 NOTICE: Some models do not support all options. Please contact your 7 - Output - Output local Artesyn representative or use the on-line model number search tool at 8 Trim Trim