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BXA40 Series
DC/DC CONVERTERS
Single output
40W Wide Input DC/DC Converters 1
* Pin-compatible with NFC40 Series * Meets telecom power supply interface standard ETS300-132-2 * EN60950, CSA C22.2 No. 950 and UL1950 safety approvals * EN61000-4-2, -3, -4, -5, -6 immunity compliant * Fixed frequency operation at 350kHz typ. * MTBF in excess of 500,000 hours * Basic insulation system with 1500V isolation * Remote sense on low voltage logic outputs * Output voltage trim
The BXA40 Series providing up to 40 Watts, has been conceived as an applications specific range of DC/DC converters, specifically addressing telecommunications, industrial electronics, test equipment, mobile telecommunications and distributed power applications. The series offers two wide input voltage ranges, 18-36VDC and 36-75VDC, and is available with single outputs from 2.9V to 12V. The BXA40 series is designed to meet ETSI telecoms interface standards ETS300-132-2. Together with internal filtering, safety approval to IEC950 and basic insulation, the 48VDC models are ideal for telecommunications applications. The 24V models are particularly suited to industrial and test equipment applications, featuring EN61000-4-2, -3, -4, -5 and -6 immunity compliance. Other features include low output ripple, overvoltage protection, indefinite short circuit protection, remote enable and remote sense.
All specifications are typical at nominal input, full load at 25C unless otherwise stated
2 YEAR WARRANTY
SPECIFICATIONS
OUTPUT SPECIFICATIONS Voltage adjustability Line regulation Load regulation Ripple and noise (20MHz bandwidth) Low line to high line Full load to no load 2.9V and 3.3V 5V 12V All models 10% 0.3% 1.0% 30mV pk-pk 50mV pk-pk 100mV pk-pk 20mV rms 0.02%/C (See Note 9) (See Note 10) 25% to 100% load (See Note 11) 135% Vout Continuous 4.0%
EMC CHARACTERISTICS Conducted emissions Radiated emissions ESD air ESD contact Surge Fast transients Radiated immunity Conducted immunity EN55022, FCC part 15, (See Notes 4 and 13) EN55022, FCC part 15 EN61000-4-2, level 3 EN61000-4-2, level 4 EN61000-4-5, level 3 EN61000-4-4, level 3 EN61000-4-3, level 3 EN61000-4-6, level 3 Level B Level A criteria 1 criteria 1 criteria 1 criteria 1 criteria 1 criteria 1
Perf. Perf. Perf. Perf. Perf. Perf.
Temperature coefficient Overvoltage protection Short circuit protection Transient response Voltage accuracy Remote sense (See Note 8)
GENERAL SPECIFICATIONS Efficiency Isolation voltage Switching frequency Approvals and standards (pending) Case material Material flammability Weight Input/output Input/case Fixed See table 1500VDC 1500VDC 350kHz typ. EN60950, UL1950 CSA C22.2 No. 950 Aluminum substrate with plastic case UL94V-0 85g (3.0oz) MIL-HDBK-217F 500,000 hours 2.2 x 2.2 x 0.5 inches 55.9 x 55.9 x 12.7 mm
1.0% 5V, 2.0% 12V Compensated line drops up to 0.5V on 5V models Compensated line drop up to 300mV on 2.9V and 3.3V models
INPUT SPECIFICATIONS Input voltage range Reverse voltage protection Max. input rise and fall time Start-up time Remote ON/OFF Logic compatibility ON OFF 48V 24Vin nominal 48Vin nominal 18 to 36VDC 36 to 75VDC (See Note 5) 5V/ms ETS300-132 30ms typ. CMOS/TTL Open-circuit <1VDC
MTBF Size
ENVIRONMENTAL SPECIFICATIONS Thermal performance Baseplate operating temperature Non-operating -40C to +105C -55C to +105C 8.5C/W 7.2C/W
Thermal impedance (See Note 6)
No air flow, no heatsink No air flow, with heatsink
File Name: BXA40S.PDF Rev: 02 Oct 2002
BXA40 Series
DC/DC CONVERTERS
INPUT VOLTAGE 18-36VDC 18-36VDC 36-75VDC 36-75VDC 36-75VDC OUTPUT VOLTAGE 3.3V 5V 2.9V 5V 12V OUTPUT CURRENT (MAX.) 7A 8A 6.9A 8.0A 3.3A
Single output
40W Wide Input DC/DC Converters 2
For the most current data and application support visit www.artesyn.com/powergroup/products.htm
INPUT CURRENT 70mA 40mA 40mA 30mA 30mA
(1)
TYPICAL EFFICIENCY 75% 81% 77% 82% 87%
REGULATION LINE (2) LOAD 0.3% 0.3% 0.3% 0.3% 0.3%
(3)
MODEL NUMBER (12) BXA40-24S3V3-SM BXA40-24S05-M
(8)
1.0% 1.0% 1.0% 1.0% 1.0%
(8) (8)
BXA40-48S2V9-SM BXA40-48S05-M
(8)
BXA40-48S12-M
Notes
1 2 3 4 5 Nominal line, at no load. Low line to high line at full load. Full load to no-load at nominal line. For conducted noise operation of the BXA40 to VDE0871, VDE0878 and EN55022 level B, see BXA40 Design Note 101. Reverse voltage protection can be implemented by putting a slow blow fuse on the positive input rail. Rate the fuse at 200VDC,1.5A for 48VDC inputs and 100V, 4.5A for 24VDC input units. The maximum operating ambient temperature, without derating depends on internal power dissipation and hence efficiency and cooling method. Download BXA40 Design Note 101 which provides detailed thermal calculations and design-in hints from the Artesyn website. Do not exceed a dv/dt rate of 100V per second at the trim pin input if output current is less than 0.4% lo max. Remote sense is offered as standard on the 2.9V and 3.3V products. The BXA40-24S05 and BXA40-48S05 come with remote sense as an option. Remote sense design is designated by the suffix `-S' e.g. BXA40-48S05SM (for units with metric inserts), BXA40-48S05-S (for units with imperial inserts). For models without remote sense option, pin 5 and pin 6 are absent. Overvoltage protection is 118% on 3.3V output model. For 2.9V output, no short circuit protection above 90C baseplate temp. Transient response, 25% to 100% load, 10% for 2.9V and 3.3V models. Units with the suffix `-M' at the end of the model number are offered as standard with metric threaded inserts (M3). To order units with imperial threaded inserts (4-40 UNC) please remove the suffix `-M' from the model number. These inserts are used for bolting the unit to a PCB and/or fixing heatsinks. 13 An external filter capacitor is necessary for safe operation of the 24V input models. It is also suggested that an external filter capacitor be used on the 48V input models. A 4F (or greater) film capacitor such as: ITW Paktron Capstick series, part number 405K100CS4 4F/100V is recommended, if filtering is not used. See BXA40 Design Note 101. 14 A top mounted heatsink kit is available for the BXA40. The heatsink may be oriented parallel to or perpendicular to the direction of the pins, thus providing optimum flexibility for cooling requirements. The order number for the top mounted heatsink kit with metric screws is `NFC40-HTSK-T'. The order number for the top mounted heatsink kit with imperial screws is `NFC40-HTSK-I'. See Design Note 101 for ambient temperature derating calculations. 9 10 11 12
6
7 8
PIN CONNECTIONS PIN NUMBER 1 2 3 4 5 6 7 8 9 SINGLE OUTPUT + Input - Input Control No Connection - Sense + Sense
(8) (8)
EXTERNAL OUTPUT TRIMMING Output can be externally trimmed by 10% using either method shown below.
7 7
TRIM DOWN
9
TRIM UP
8
RT1 9 OR RT2
10K TRIMPOT
8
+ Output Common Trim
Please consult our website for the following items: Design Note
www.artesyn.com
File Name: BXA40S.PDF Rev: 02 Oct 2002
BXA40 Series
DC/DC CONVERTERS
Single output
40W Wide Input DC/DC Converters 3
For the most current data and application support visit www.artesyn.com/powergroup/products.htm
0.15 (3.82)
1.90 (48.26) 1.25 (31.76) 0.60 (15.24) 0.2 (5.08)
0.019 (0.50)
3 0.043 0.003(1.02 0.05) Diameter Typ.
2
1
Metric (Suffix '-M'): M3 Tap Thru. 4 places or Imperial (No '-M' suffix) 440 UNC (Optional) 0.256 (6.50) Diameter Stand-off (4 Places) 9 8 7 6 5 4 0.2 (5.08)
1.80 (45.72)
1.90 (48.26)
2.20 0.02 (55.90 0.50)
0.50 (12.70)
0.15 (3.90) 0.3 (7.62)
0.1 (2.54)
0.05 (1.27)
0.15 (3.82)
0.6 (15.24) 0.8 0.5 (20.32) (12.70) 2.20 0.02 (55.90 0.50)
BOTTOM VIEW ALL DIMENSIONS IN INCHES (mm)
TOLERANCE : 0.004 (0.1) (Unless otherwise specified)
International Safety Standard Approvals
VDE0805/EN60950/IEC950 File No. 14501-3336-7009 Licence No. 6296 UL1950 File No. E174104 CSA C22.2 No. 950 File No. LR41062C
Data Sheet (c) Artesyn Technologies(R) 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: Design Note
www.artesyn.com
File Name: BXA40S.PDF Rev: 02 Oct 2002

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