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Single output
50-75W Wide Input DC/DC Converters
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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 BXB75 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 BXB75 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 BXB75 series is approved to IEC950 by UL, CSA and VDE.
2 YEAR WARRANTY
All specifications are typical at nominal input, full load at 25擄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
(See Note 6)
48Vin nominal
No load
Remote OFF
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
At turn-on and turn-off
Low line to high line
Full load to min. load
60% to 110%
鹵1.0%
鹵0.05%
鹵0.10%
0%
None
None
75mV pk-pk,
20mV rms
100mV pk-pk,
30mV rms
鹵0.01%/擄C
鹵2.0% max. deviation
170碌s recovery
to within 鹵1.0%
0.5VDC transmission
line drop compensation
INPUT SPECIFICATIONS (continued)
Undervoltage lockout
Start-up time
(See Note 8)
48Vin: power up
48Vin: power down
Power up
Remote ON/OFF
34V
32.5V
20ms
20ms
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
1,400,000 hours min.
MIL-HDBK-217F
580,000 hours min.
@ 40擄C, 100% full load
Switching frequency
Approvals and
standards (See Note 5)
Case material
Material flammability
Weight
MTBF
ENVIRONMENTAL SPECIFICATIONS
Thermal performance
Altitude
Vibration
Operating case temp. -40擄C to +100擄C
Non-operating
-55擄C to +125擄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: BXB75S.PDF Rev: 02 Oct 2002
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