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 25°C 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
-40°C to +105°C
-55°C to +105°C
8.5°C/W
7.2°C/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.
BXA40-48S05-
SM
(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.
9
10
11
12
Overvoltage protection is 118% on 3.3V output model.
For 2.9V output, no short circuit protection above 90
°
C 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 4µF (or greater) film capacitor such as: ITW Paktron
Capstick series, part number 405K100CS4 4µF/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.
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
10KΩ
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) 4-
40 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 © 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:
✔
Design Note
www.artesyn.com
File Name: BXA40S.PDF Rev: 02 Oct 2002
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