BXA40 Series
Tr i p l e o u t p u t
DC/DC CONVERTERS 40W Wide Input DC/DC Converters
1
• Meets telecom power supply interface standard
ETS300-132-2
• EN60950, CSA950 and UL1950 safety approvals
• EN61000-4-2, -3, -4, -5, -6 immunity compliant
• Fixed frequency operation at 400kHz
• MTBF in excess of 500,000 hours
• Basic insulation system with 1500V isolation
• Pin-compatible with NFC40 Series
The BXA40-48T05-12-M provides 40 Watts of output power, has been conceived as an
applications-specific range of DC/DC converters, specifically addressing
telecommunications, industrial electronics, test equipment, mobile telecommunications
and distributed power applications. The series offers a wide input voltage range, of 36-
75VDC, and is available with a 5/±12V triple output. The BXA40 series is designed to
meet ETSI telecoms interface standard ETS300-132-2. With safety approval to IEC950
and basic insulation, the 48VDC model is ideal for telecommunications applications.
Other features include low output ripple, overvoltage protection, short circuit protection
and remote enable.
2 YEAR WARRANTY
All specifications are typical at nominal input, full load at 25°C unless otherwise stated
SPECIFICATIONS
OUTPUT SPECIFICATIONS
EMC CHARACTERISTICS
Line regulation
(See Note 2)
Main output
Auxiliary output
±0.5%
±2.0%
Conducted emissions
EN55022, FCC part 15,
(See Notes 6, 9)
Level B
Radiated emissions
ESD air
ESD contact
EN55022, FCC part 15
EN61000-4-2, level 3
EN61000-4-2, level 4
EN61000-4-5, level 3
EN61000-4-4, level 3
EN61000-4-3, level 3
EN61000-4-6, level 3
Level A
Perf. criteria 1
Perf. criteria 1
Perf. criteria 1
Perf. criteria 1
Perf. criteria 1
Perf. criteria 1
Load regulation
(See Note 3)
Main output
±1.0%
±3.0% typ.,
±5.0% max.
Auxiliary output
Surge
Load cross regulation
(See Note 4)
Main output
Aux. output
±1.0%
±3.0% typ., ±5.0% max.
Fast transients
Radiated immunity
Conducted immunity
Ripple and noise
(20MHz bandwidth)
Main output
50mV pk-pk,
20mV rms
100mV pk-pk,
20mV rms
GENERAL SPECIFICATIONS
Auxiliary output
Efficiency
83%
Temperature coefficient
±0.02% /°C
Isolation voltage
Input/output
Basic insulation, input/case
1500VDC
1500VDC
Overvoltage protection
transorbs fitted
Main output
Auxiliary outputs
6.8V (nom.)
16/20V (nom.)
Switching frequency
Fixed
400kHz (typical)
Short circuit protection
(See Note 5)
Main output
Auxiliary output
11A
5A
Approvals and
standards (pending)
EN60950, UL1950
CSA C22.2 No. 950
Transient response
Voltage accuracy
25% to 100% load
4.0%
Case material
Aluminum substrate
with plastic case
Main output
Auxiliary output
±1.0%
±3.0%
Material flammability
UL94V-0
85g typ. (3.0oz)
500,000 hours
Minimum Load
Main output
Auxiliary outputs
0.6A
0.03A/0.04A
Weight
MTBF
Size
MIL-HDBK-217F
INPUT SPECIFICATIONS
2.2 x 2.2 x 0.5 inches
55.9 x 55.9 x 12.7 mm
Input voltage range
48Vin nominal
External fuse
36 to 75VDC
(See Note 7)
Reverse voltage
protection
ENVIRONMENTAL SPECIFICATIONS
Thermal performance
Baseplate operating
temperature
Non-operating
-40°C to +105°C
Max. input rise and
fall time
5V/ms
ETS300-132
-55°C to +105°C
8.5°C/W
Start-up time
30ms typ.
Thermal impedance
(See Note 8)
No air flow, no heatsink
No air flow, with heatsink
7.2°C/W
Remote ON/OFF
Logic compatibility
CMOS/TTL
Open-circuit
<1VDC
ON
OFF
File Name: BXA40T.PDF Rev: 02 Oct 2002
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