DC/DC CONVERTERS 60-75W Wide Input DC/DC Converters 1
2 YEAR WARRANTY
BXB75 Series
Dual output
•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
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.
All specifications are typical at nominal input, full load at 25°C unless otherwise stated
EMC CHARACTERISTICS
Conducted emissions Bellcore 1089, FCC part 15 Level A
(See Note 3) EN55022, CISPR22 Level A
GENERAL SPECIFICATIONS
Efficiency See table
Isolation voltage Input/case 1000VDC
(See Note 13) Input/output 1500VDC
Output/case 1500VDC
Switching frequency Fixed 400kHz
Approvals and VDE0805, EN60950, IEC950
standards UL1950, CSA C22.2 No. 950
Case material Aluminum baseplate
with plastic case
Material flammability UL94V-0
Weight 127g (4.5 oz)
MTBF Bellcore 332 >2,000,000 hours
(calculated)
ENVIRONMENTAL SPECIFICATIONS
Thermal performance Operating case temp. -40°C to +100°C
Non-operating -50°C to +110°C
Altitude Operating 10,000 feet max.
Non-operating 40,000 feet max.
Vibration 5Hz to 500Hz 2.4G rms (approx.)
OUTPUT SPECIFICATIONS
Voltage adjustability Each output ±5.0%
Set point accuracy ±2.0%
Line regulation ±0.25%
Load regulation ±0.50%
Minimum load (See Note 14) 1A
Undershoot None
Ripple and noise Each output 100mV pk-pk,
5Hz to 20MHz (See Note 1) 40mV rms max.
Temperature coefficient ±0.01%/°C
Transient response ±2.0% max. deviation
(See Note 2) 300µs recovery
to within ±1.0%
Remote sense None
INPUT SPECIFICATIONS
Input voltage range 48Vin nominal 36 to 75VDC
Input current No load 150mA max.
Remote OFF 25mA max.
Input current (max.) 3.3V/2.5V 2.5A max. @ lo max. and
(See Note 4) Vin = 0 to 75V
5V/3.3V 3.5A max. @ lo max. and
Vin = 0 to 75V
Input reflected ripple (See Note 6) 20mA pk-pk
Active low remote ON/OFF (See Note 7)
Logic compatibility Ref. to -input CMOS/TTL
ON 1.2VDC max.
OFF 3.5VDC min. or open circuit
Undervoltage lockout 30V typ.
Start-up time Power up 10ms max.
(See Note 8) Remote ON/OFF 2.5ms max.
SPECIFICATIONS
File Name: BXB75D.PDF Rev: 24 Apr 2002
