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
Notes
1
Nominal line, at no load.
2
Low line to high line at full load.
3
Full load to no-load at nominal line.
4
For conducted noise operation of the BXA40 to VDE0871, VDE0878 and
EN55022 level B, see BXA40 Design Note 101.
5
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.
6
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.
7
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.
8
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
Overvoltage protection is 118% on 3.3V output models.
10 For 2.9V output, no short circuit protection above 90
°C baseplate temp.
11 Transient response, 25% to 100% load, 10% for 2.9V and 3.3V models.
12 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.
EXTERNAL OUTPUT TRIMMING
Output can be externally trimmed
by ±10% using either method shown below.
10K
TRIMPOT
TRIM
DOWN
TRIM
UP
7
9
8
7
9
8
RT1
OR
RT2
BOTTOM VIEW
ALL DIMENSIONS IN INCHES (mm)
0.3
(7.62)
0.019
(0.50)
0.50
(12.70)
0.15
(3.90)
32
1
98
7
6
5
4
2.20
±0.02
(55.90
±0.50)
1.90
(48.26)
1.80
(45.72)
0.15
(3.82)
0.05
(1.27)
0.2
(5.08)
0.1
(2.54)
0.6
(15.24)
0.8
(20.32)
0.5
(12.70)
0.2
(5.08)
0.60
(15.24)
1.25
(31.76)
1.90
(48.26)
0.15
(3.82)
0.256 (6.50) Diameter
Stand-off (4 Places)
Metric (Suffix '-M'):
M3 Tap Thru. 4 places or
Imperial (No '-M' suffix) 4-
40 UNC (Optional)
1.02 (0.043)
Diameter Typ.
TOLERANCE :
± 0.004 (0.1)
(Unless otherwise specified)
2.20
±0.02
(55.90
±0.50)
40 Watt
Wide input DC/DC converters
DC/DC CONVERTERS
|
40W DC/DC
PAGE 139
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INPUT
OUTPUT
INPUT
TYPICAL
REGULATION
MODEL
VOLTAGE
CURRENT (MAX.)
CURRENT (1)
EFFICIENCY
LINE (2)
LOAD (3)
NUMBER (12)
18-36VDC
3.3V
7A
70mA
75%
0.3%
1.0%
BXA40-24S3V3-SM (8)
18-36VDC
5.0V
8A
40mA
81%
0.3%
1.0%
BXA40-24S05-M (8)
18-36VDC
12.0V
3.33A
60mA
85%
0.3%
1.0%
BXA40-24S12-M
18-36VDC
15.0V
2.67A
50mA
85%
0.3%
1.0%
BXA40-24S15-M
36-75VDC
2.9V
6.9A
40mA
77%
0.3%
1.0%
BXA40-48S2V9-SM (8)
36-75VDC
3.3V
7.0A
40mA
75%
0.3%
1.0%
BXA40-48S3V3-SM (8)
36-75VDC
5V
8.0A
30mA
82%
0.3%
1.0%
BXA40-48S05-M (8)
36-75VDC
12V
3.3A
30mA
87%
0.3%
1.0%
BXA40-48S12-M
36-75VDC
15V
2.67 A
30mA
87%
0.3%
1.0%
BXA40-48S15-M
PIN CONNECTIONS
PIN NUMBER
SINGLE OUTPUT
1
+ Input
2
– Input
3
Control
4
No Connection
5
- Sense (8)
6
+ Sense (8)
7
+ Output
8
Common
9
Trim
5
Please consult our website for the following items:
Design Note
DS_BXA40_20000101.PDF