BXB75 SERIES
Single output
[ 2 YEAR WARRANTY ]
• 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.
SPECIFICATION
All specifications are typical at nominal input, full load at 25°C unless otherwise stated
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OUTPUT SPECIFICATIONS
Voltage adjustability 60% to 110%
Set point accuracy ±1.0%
Line regulation Low line to high line ±0.05%
Load regulation Full load to min. load ±0.10%
Minimum load 0%
Overshoot At turn-on and turn-off None
Undershoot None
Ripple and noise 3.3V and 5V 75mV pk-pk,
(5Hz to 20MHz) 20mV rms
(See Note 1) 12V and 15V 100mV pk-pk,
30mV rms
Temperature coefficient ±0.01%/°C
Transient response ±2.0% max. deviation
(See Note 2) 170µs recovery
to within ±1.0%
Remote sense 0.5VDC transmission
line drop compensation
INPUT SPECIFICATIONS
Input voltage range 24Vin nominal 18 to 36VDC
48Vin nominal 36 to 75VDC
Input current No load 100mA max.
Remote OFF 20mA max.
Input current (max.) 48V models 3.5A max. @ Io max.
(See Note 4) and Vin = 0 to 75V
Input reflected ripple (See Note 6) 5mA pk-pk
Active low remote ON/OFF (See Note 7)
Logic compatibility Open collector ref to -input
ON 1.2VDC max.
OFF Open circuit
INPUT SPECIFICATIONS CONTINUED
Undervoltage lockout 24Vin: power up 17V
24Vin: power down 16V
48Vin: power up 34V
48Vin: power down 32.5V
Start-up time Power up 20ms
(See Note 8) Remote ON/OFF 20ms
EMC CHARACTERISTICS
Conducted emissions Bellcore 1089 Level A
(See Note 3) FCC part 15 Level A
EN55022, CISPR22 Level A
GENERAL SPECIFICATIONS
Efficiency See table
Isolation voltage Input/case 1500VDC
Input/output 1500VDC
Output/case 1500VDC
Switching frequency Fixed 500kHz typ.
Approvals and VDE0805, EN60950, IEC950
standards (See Note 5) UL1950, CSA C22.2 No. 950
Case material Aluminum baseplate
with plastic case
Material flammability UL94V-0
Weight 110g (3.88oz)
MTBF Bellcore 332 1,400,000 hours
MIL-HDBK-217F 580,000 hours
@ 40°C, 100% full load min.
ENVIRONMENTAL SPECIFICATIONS
Thermal performance Operating case temp. -40°C to +100°C
Non-operating -55°C to +125°C
Altitude Operating 10,000 feet max.
Non-operating 40,000 feet max.
Vibration 5Hz to 500Hz 2.4G rms (approx.)
