BXB75 Series
DC/DC CONVERTERS
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Flexible dual output unit
15A maximum per channel
Industry standard footprint
MTBF >2 million hours (Bellcore 332)
Input voltage to ETS300-132-2
Adjustable output voltage
2:1 input range
Undervoltage lockout (UVLO)
UL, VDE and CSA safety approvals
Dual output
60-75W Wide Input DC/DC Converters
1
The BXB75 Dual is a high power density DC/DC converter packaged in the industry
standard footprint (2.40 x 2.28 x 0.50 inches). With no minimum load requirements,
either output can supply its maximum current, or both channels can support any
combination of loading to a total of 60/75W of output power. Suitable for a wide range
of applications in nearly any industry, the BXB75 Dual was designed with
communication and distributed power applications in mind. Aluminum baseplate
technology with four threaded inserts makes heatsink attachment and optimum thermal
management easy. The BXB75 Dual series is 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
Undershoot
Ripple and noise
5Hz to 20MHz
Temperature coefficient
Transient response
(See Note 2)
Remote sense
INPUT SPECIFICATIONS
Input voltage range
Input current
Input current (max.)
(See Note 4)
48Vin nominal
No load
Remote OFF
3.3V/2.5V
5V/3.3V
Input reflected ripple
(See Note 6)
36 to 75VDC
150mA max.
25mA max.
2.5A max. @ lo max. and
Vin = 0 to 75V
3.5A max. @ lo max. and
Vin = 0 to 75V
20mA pk-pk
(See Note 7)
Ref. to -input CMOS/TTL
1.2VDC max.
3.5VDC min. or open circuit
30V typ.
Power up
Remote ON/OFF
10ms max.
2.5ms max.
Each output
(See Note 1)
(See Note 14)
Each output
±5.0%
±2.0%
±0.25%
±0.50%
1A
None
100mV pk-pk,
40mV rms max.
±0.01%/°C
±2.0% max. deviation
300µs recovery
to within ±1.0%
None
EMC CHARACTERISTICS
Conducted emissions
(See Note 3)
Bellcore 1089, FCC part 15
EN55022, CISPR22
Level A
Level A
GENERAL SPECIFICATIONS
Efficiency
Isolation voltage
(See Note 13)
Switching frequency
Approvals and
standards
Case material
Material flammability
Weight
MTBF
Bellcore 332
(calculated)
Input/case
Input/output
Output/case
Fixed
See table
1000VDC
1500VDC
1500VDC
400kHz
VDE0805, EN60950, IEC950
UL1950, CSA C22.2 No. 950
Aluminum baseplate
with plastic case
UL94V-0
127g (4.5 oz)
>2,000,000 hours
ENVIRONMENTAL SPECIFICATIONS
Thermal performance
Altitude
Vibration
Operating case temp. -40°C to +100°C
Non-operating
-50°C to +110°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
Undervoltage lockout
Start-up time
(See Note 8)
File Name: BXB75D.PDF Rev: 24 Apr 2002
BXB75 Series
DC/DC CONVERTERS
OUTPUT
POWER
(MAX.)
60W
75W
Notes
1
2
3
4
5
6
7
Dual output
60-75W Wide Input DC/DC Converters
2
For the most current data and application support visit www.artesyn.com/powergroup/products.htm
OUTPUT
VOLTAGE
OP1
3.3V
5V
OP2
2.5V
3.3V
OUTPUT
CURRENT
(MIN.)
1A
1A
(14)
INPUT
VOLTAGE
OVP
OUTPUT
CURRENT
(MAX.)
15A
15A
(12)
TYPICAL
EFFICIENCY
74%
82%
(10)
(9)
REGULATION
LINE
±0.25%
±0.25%
LOAD
MODEL
NUMBER
(7)
36-75VDC 4.0/3.0VDC
36-75VDC 6.0/4.0VDC
±0.50% BXB75-48D3V3-2V5FL
±0.50%
BXB75-48D05-3V3FL
PROTECTION
Short circuit protection
5V/3.3V
3.3V/2.5V
Input surge protection
Reverse voltage protection
(See Note 4)
Overvoltage protection
Undervoltage protection
Thermal protection
TELECOM SPECIFICATION
Central office interface A
ETS300-132-2
Continuous, 25A max.
auto restart
Continuous, 32A max.
auto restart
100VDC for one second max.
non repetitive
Yes, up to 17A with
source impedance of 5Ω
Latching, 120% Vout
Non-latching
110°C baseplate, automatic recovery
8
9
10
11
12
13
14
Measured with 10µF tantalum capacitor and 0.1µF ceramic capacitor
across output.
di/dt = 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.
Option with active high remote on/off (standard product is active low) is
available. Designate with the suffix ‘FH’, e.g.
BXB75-48D05-3V3FH.
BXB75-48D3V3-2V5FH is not available.
Start-up in resistive load.
5V at 15A.
Measured with 15A load on 3.3V output and 5A load on 2.5V output.
Numbers in brackets refer to output 1.
Combined maximum output current that may be drawn from both channels
simultaneously is 20A (i.e. current from OP1 + current from OP2).
Connect input to case when performing hipot test from output to case.
1A minimum load required on the higher voltage output.
EXTERNAL OUTPUT TRIMMING
PIN CONNECTIONS
PIN
NUMBER
1
2
3
4
5
6
7
8
9
10
FUNCTION
- Vin
Case
Remote ON/OFF
Output can be externally
trimmed by using the
method shown.
(11)
9 (6)
TRIM
UP
8 (5)
RT1
OR RT2
TRIM
DOWN
10 (7)
+ Vin
OP1 Trim
OP1 Return
OP1
OP2 Trim
OP2 Return
OP2
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File Name: BXB75D.PDF Rev: 24 Apr 2002
BXB75 Series
DC/DC CONVERTERS
Dual output
60-75W 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
0.20 MIN
(5.08)
10
1
9
2.40
(60.96)
2.000
(50.800)
1.400
(35.560)
0.600
(15.24)
7
3
6
4
5
Ø0.040
±0.003
(Ø1.016
±0.080)
10 Places
2
8
0.400
1.000
(10.16) (25.400)
1.600
(40.640)
SIDE
VIEW
1.900
(48.26)
2.28
(57.91)
4 X M3 x 0.5
Through
0.50
(12.70)
ALL DIMENSIONS IN INCHES (mm)
TOLERANCE : x.xx
x.xxx
±0.02in.
(0.51mm)
±0.010in.
(0.254mm)
International Safety Standard Approvals
VDE0805/EN60950/IEC950 File No. 10401-3336-1095
Licence No. 6249
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.
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File Name: BXB75D.PDF Rev: 24 Apr 2002
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