BXB50 Series
DC/DC CONVERTERS
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Single output
33-50W Wide Input DC/DC Converters
1
Industry standard footprint
MTBF >1.4 million hours (Bellcore 332)
Input voltage to ETS300-132-2
Adjustable output voltage
No minimum load required
Separate case ground pin
2:1 input range for battery powered applications
Undervoltage lockout (UVLO)
UL, VDE and CSA safety approvals
The BXB50 Series are high power density DC/DC converters packaged in the industry
standard footprint (2.40 x 2.28 x 0.50 inches) to give designers optimum choices when
specifying for both new and replacement designs. Suitable for a wide range of
applications in nearly any industry, the BXB50 was particularly designed with
communication and distributed power applications in mind. Using Bellcore 332, the
MTBF is greater than 1,400,000 hours. Aluminum baseplate technology with four
threaded M3 inserts makes heatsink attachment and optimum thermal management
easy. The BXB50 series are approved to IEC950 by UL, CSA and VDE.
2 YEAR WARRANTY
All specifications are typical at nominal input, full load at 25°C unless otherwise stated
SPECIFICATIONS
OUTPUT SPECIFICATIONS
Voltage adjustability
Set point accuracy
Line regulation
Load regulation
Minimum load
Overshoot
Undershoot
Ripple and noise
(5Hz to 20MHz)
(See Note 1)
Temperature coefficient
Transient response
(See Note 2)
Remote sense
INPUT SPECIFICATIONS
Input voltage range
Input current
Input current (max.)
(See Note 4)
Input reflected ripple
24Vin nominal
48Vin nominal
No load
Remote OFF
48V models
(See Note 6)
18 to 36VDC
36 to 75VDC
100mA max.
20mA max.
3.5A max. @ Io max.
and Vin = 0 to 75V
5mA pk-pk
(See Note 7)
Open collector ref to -input
1.2VDC max.
Open circuit
3.3V and 5V
12V and 15V
At turn-on and turn-off
Low line to high line
Full load to min. load
60% to 110%
±1.0%
±0.05%
±0.10%
0%
None
None
75mV pk-pk,
20mV rms
100mV pk-pk,
30mV rms
±0.01%/°C
±2.0% max. deviation
170µs recovery
to within ±1.0%
0.5VDC transmission
line drop compensation
INPUT SPECIFICATIONS CONTINUED
Undervoltage lockout
24Vin:
24Vin:
48Vin:
48Vin:
power
power
power
power
up
down
up
down
17V
16V
34V
32.5V
20ms
20ms
Start-up time
(See Note 8)
Power up
Remote ON/OFF
EMC CHARACTERISTICS
Conducted emissions
(See Note 3)
Bellcore 1089
FCC part 15
EN55022, CISPR22
Level A
Level A
Level A
GENERAL SPECIFICATIONS
Efficiency
Isolation voltage
Input/case
Input/output
Output/case
Fixed
See table
1500VDC
1500VDC
1500VDC
500kHz typ.
VDE0805, EN60950, IEC950
UL1950, CSA C22.2 No. 950
Aluminum baseplate with plastic case
UL94V-0
110g (3.88oz)
Bellcore 332
MIL-HDBK-217F
@ 40°C, 100% load
1,400,000 hours
580,000 hours
min.
Switching frequency
Approvals and
standards (See Note 5)
Case material
Material flammability
Weight
MTBF
ENVIRONMENTAL SPECIFICATIONS
Thermal performance
Altitude
Vibration
Operating case temp. -40°C to +100°C
Non-operating
-55°C to +125°C
Operating
Non-operating
5Hz to 500Hz
10,000 feet max.
40,000 feet max.
2.4G rms (approx.)
Active low remote ON/OFF
Logic compatibility
ON
OFF
File Name: BXB50S.PDF Rev: 02 Oct 2002
BXB50 Series
DC/DC CONVERTERS
OUTPUT
POWER
(MAX.)
33W
50W
50W
33W
50W
50W
INPUT
VOLTAGE
18-36VDC
18-36VDC
18-36VDC
36-75VDC
36-75VDC
36-75VDC
OVP
4.3VDC
14.5VDC
17.5VDC
4.3VDC
6.5VDC
14.5VDC
OUTPUT
VOLTAGE
3.3V
12V
15V
3.3V
5V
12V
Single output
33-50W Wide Input DC/DC Converters
2
For the most current data and application support visit www.artesyn.com/powergroup/products.htm
OUTPUT
CURRENT
(MIN.)
0A
0A
0A
0A
0A
0A
OUTPUT
CURRENT
(MAX.)
10A
4.16A
3.33A
10A
10A
4.16A
EFFICIENCY
(TYP.)
76%
83%
83%
77%
82%
84%
REGULATION
LINE
±0.05%
±0.05%
±0.05%
±0.05%
±0.05%
±0.05%
LOAD
±0.10%
±0.10%
±0.10%
±0.10%
±0.10%
±0.10%
MODEL
NUMBER
(7)
BXB50-24S3V3FLT
BXB50-24S12FLT
BXB50-24S15FLT
BXB50-48S3V3FLT
BXB50-48S05FLT
BXB50-48S12FLT
Notes
1
2
3
4
5
6
7
Measured with 10µF tantalum capacitor and 1µF ceramic capacitor across
output.
di/dt = 0.1A/1µs, Vin = 48VDC, Tc = 25°C, load change = 0.5 lo max. to
0.75 lo max. and 0.75 lo max. to 0.5 lo max.
Units should be characterised within systems. External components
required.
Input fusing is recommended based on surge current and maximum input
current.
This product is only for inclusion by professional installers within other
equipment and must not be operated as a stand alone product.
Simulated source impedance of 12
µ
H. 12
µ
H inductor in series with +Vin.
Active high remote on/off option is available (standard product is active
low), designate with the suffix ‘FHT’ e.g.
BXB50-48S05FHT.
Consult
factory for further details and options.
Start-up into resistive load.
PROTECTION
Short circuit protection
Overvoltage protection
Undervoltage protection
Thermal protection
TELECOM SPECIFICATION
Central office interface A
ETS300-132-2
Continuous, automatic recovery
Non-latching
Non-latching
110°C baseplate,
automatic recovery
8
PIN CONNECTIONS
PIN
NUMBER
1
2
3
4
5
6
7
8
9
FUNCTION
+ Vin
Remote ON/OFF
Case
- Vin
EXTERNAL OUTPUT TRIMMING
Output can be externally
trimmed by using the
method shown.
8
TRIM
UP
7
RT1
OR
RT2
TRIM
DOWN
6
- Vout
- Sense
Trim
+ Sense
+ Vout
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File Name: BXB50S.PDF Rev: 02 Oct 2002
BXB50 Series
DC/DC CONVERTERS
Single output
33-50W Wide Input DC/DC Converters
3
For the most current data and application support visit www.artesyn.com/powergroup/products.htm
VIEW SHOWN
PIN SIDE UP
1.90
(48.26)
0.500 (12.69)
±
0.010 (0.25)
CASE
0.190 (4.83)
±
0.010 (0.25)
0.200 (5.08) Min.
Length for all Input
and Output Pins
+SEN TRIM -SEN
1.000 (25.40)
0.400 (10.16)
1.400 (35.56)
VI (-)
Vo (-)
0.700 (17.77)
0.400 (10.16)
1.000 (25.40)
2.000 (50.80)
2.40 (60.96)
Max.
ON/OFF
1.400 (35.56)
7 x Ø.040 (1.02)
±0.002
(0.05)
0.190 (4.83)
±0.010
(0.25)
2.28 (57.91) Max.
2 x Ø.080 (2.03)
±
0.002 (0.05)
4 x M3 x 0.5 Through
0.500 (12.70)
ALL DIMENSIONS IN INCHES (mm)
Tolerance : x.xx
±0.02in.
(0.51mm)
x.xxx
±0.010in.
(0.254mm)
International Safety Standard Approvals
VDE0805/EN60950/IEC950 File No. 10401-3336-1095
UL1950 File No. E136005
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.
Vo(+)
VI(+)
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File Name: BXB50S.PDF Rev: 02 Oct 2002
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