DC-DC CONVERTERS 72-165 W High Efficiency DC-DC Converters 1
2 YEAR WARRANTY
EXB250 Series
Single output
•High efficiency topology, 90% typical at 3.3 V
•Industry standard footprint
•Wide baseplate temperature, -40 ˚C to +100 ˚C
(natural convection)
•90% to 110% output trim
•No minimum load
•Overvoltage protection
•Remote ON/OFF
•Available RoHS compliant
The EXB250 is a new high efficiency, open-frame, isolated 165 Watt converter series in an
industry standard half-brick footprint. The EXB250 delivers very high output current at low
voltages, and excellent useable power density for today’s high end applications. The design takes
advantage of open frame construction to provide a low weight, low thermal impedance baseplate
design. The seven models in the series feature an input voltage range of 33 Vdc to 75 Vdc and
are available in output voltages of 12 V, 5 V, 3.3 V, 2.5 V, 1.8 V, 1.5 V and 1.2 V. The output voltage
on each model is adjustable from 90% to 110% of the nominal value. Typical efficiencies for the
models are 90% for the 3.3 V, 88% for the 2.5 V and 87% for the 1.8 V version. The EXB250
series also has a remote ON/OFF capability. Overcurrent and overvoltage protection features are
included as standard. With full international safety approval including EN60950 (TÜV Rheinland)
and UL/cUL1950, the EXB250 reduces compliance costs and time to market.
All specifications are typical at nominal input, full load at 25 °C unless otherwise stated
OUTPUT SPECIFICATIONS
Voltage adjustability 90% to 110%
Set point accuracy ±1.6% max.
Line regulation 1.2 V model ±0.2% max.
Low line to high line All other models ±0.1% max.
Load regulation Full load to min. load ±0.2% max.
Minimum load 0%
Overshoot At turn-on and turn-off None
Undershoot 1.2 V, 1.5 V (Z), 1.8 V (Z), None
2.5 V (Z) and 3.3 V (Z) models
Ripple and noise 5 Hz to 20 MHz 60 mV pk-pk
20 mV rms
Transient response 6% max. deviation
(See Note 1) 150 µs recovery to
within total error band
INPUT SPECIFICATIONS
Input voltage range 48 Vin nominal 33-75 Vdc
Input current No load 145 mA max.
Remote OFF 35 mA max.
Input current (max.) 5.7 A max. @ Io max.
(See Note 3) and Vin = 33-75 Vdc
Input reflected ripple (See Note 5) 350 mA (pk-pk) typ.
Active high remote ON/OFF
Logic compatibility Open collector ref to -input
ON Open circuit or >4.0 Vdc
OFF <1.2 Vdc
Undervoltage lockout Power up 32.5 V (typ.)
Power down 30.5 V (typ.)
Start-up time Power up 10 ms (typ.)
(See Note 6) Remote ON/OFF 3 ms (typ.)
SPECIFICATIONS
File Name: exb250s.pdf Rev (02): 06 Dec 2005
TÜV
EMC CHARACTERISTICS
Conducted emissions EN55022 (See Note 2) Level A
EN55022 (See Note 2) Level B
Immunity:
ESD air EN61000-4-2 8 kV (NP), 15 kV (NP)
ESD contact EN61000-4-2 6 kV (NP), 8 kV (NP)
Radiated field enclosure EN61000-4-3 10 V/m (NP)
Conducted (DC power) EN61000-4-6 10 V (NP)
Conducted (signal) EN61000-4-6 10 V (NP)
Input transients ETS 300 132-2, ETR 283
GENERAL SPECIFICATIONS
Efficiency See table
Operational Input/output 1500 Vdc
Input/baseplate 1500 Vdc
Switching frequency Fixed 400 kHz typ.
Approvals and EN60950 (TÜV Rheinland)
standards (See Note 4) UL/cUL1950
Material flammability UL94V-0
Weight 73 g (2.6 oz)
MTBF Telcordia SR-332 1,598,243 hours
@ 25 °C, 100% load
ground benign
Demonstrated >2,000,000 hours
ENVIRONMENTAL SPECIFICATIONS
Thermal performance Operating baseplate -40 °C to +100 °C
temperature
Non-operating -40 °C to +125 °C
For the most current data and application support visit www.artesyn.com/powergroup/products.htm
NNootteess
1di/dt = 0.1 A/µs, Vin = 48 Vdc, Tc = 25 °C, load change = 0.5 lo max.
to 0.75 lo max. and 0.75 lo max. to 0.5 lo max.
2The EXB250 meets level A and level B conducted emissions only with
external components connected before the input pins to the converter.
See Application Note 119.
3Recommended input fusing is a 10 A HRC 200 V rated fuse.
4This product is only for inclusion by professional installers within other
equipment and must not be operated as a stand alone product.
5Measured with no external Pi filter. Significant reduction possible with
external filter. See Application Note 119.
6Start-up into resistive load.
7For the pin length of Modified Standard products please consult the
factory.
8The ‘J’ suffix indicates that these parts are Pb-free (RoHS 6/6) compliant.
TSE RoHS 5/6 (non Pb-free) compliant versions may be available on
special request, please contact your local sales representative for details.
9NOTICE: Some models do not support all options. Please contact your
local Artesyn representative or use the on-line model number search tool at
http://www.artesyn.com/powergroup/products.htm to find a suitable
alternative.
CAUTION: Hazardous internal voltages and high temperatures.
Ensure that unit is not user accessible.
PROTECTION
Short circuit Continuous
Overvoltage Non-latching clamp
TELECOM SPECIFICATION
Central office interface A ETS300-132-2 input voltage
and current requirements
EXB250 Series
Single output
DC-DC CONVERTERS 72-165 W High Efficiency DC-DC Converters 2
File Name: exb250s.pdf Rev (02): 06 Dec 2005
OUTPUT INPUT OVP OUTPUT OUTPUT OUTPUT EFFICIENCY REGULATION MODEL
POWER VOLTAGE VOLTAGE CURRENT CURRENT (TYP.) LINE LOAD NUMBER (8,9)
(MAX.) (MIN.) (MAX.)
72 W 33-75 Vdc 1.44 Vdc 1.2 V 0 A 60 A 84.0% ±0.2% ±0.2% EXB250-48S1V2J
90 W 33-75 Vdc 1.8 Vdc 1.5 V 0 A 60 A 85.5% ±0.1% ±0.2% EXB250-48S1V5J
108 W 33-75 Vdc 2.2 Vdc 1.8 V 0 A 60 A 87.0% ±0.1% ±0.2% EXB250-48S1V8J
150 W 33-75 Vdc 3 Vdc 2.5 V 0 A 60 A 88.0% ±0.1% ±0.2% EXB250-48S2V5J
165 W 33-75 Vdc 4 Vdc 3.3 V 0 A 50 A 90.0% ±0.1% ±0.2% EXB250-48S3V3J
165 W 33-75 Vdc 6 Vdc 5 V 0 A 33 A 91.7% ±0.1% ±0.2% EXB250-48S05J
165 W 33-75 Vdc 14.4 Vdc 12 V 0 A 13.75 A 92.0% ±0.1% ±0.2% EXB250-48S12J
EXB250-48S1V2-ZRNJ
Part Number System with Options
EX = Open Frame, Through Hole
B= 1/2 Brick
Output Wattage Class
250 = 250 Watts
Input Voltage
48 = 48 Volts (33 Vdc to 75 Vdc range)
Number of Outputs
S = Single
Control Logic
Blank = Positive
R = Negative
Output Voltage
1V2 = 1.2 V, 1V5 = 1.5 V etc
Pin Length of Standard Product
Blank = 0.210 ” (5.33 mm)
Pin Length of Modified Standard Products
N = 0.145 ” (3.68 mm)
K = 0.110 ” (2.79 mm)
RoHS Compliance (8,9)
J = Pb-free (RoHS 6/6 compliant)
Blank = Standard Product
Z = Zero Undershoot,
Soft Turn-off Characteristic
(Applies to 1.5 V, 1.8 V,
2.5 V and 3.3 V models only)
Datasheet © Artesyn Technologies
®
2005
The information and specifications contained in this datasheet are believed to be correct at time of publication. However, Artesyn Technologies accepts no responsibility for consequences arising
from printing errors or inaccuracies. The information and specifications contained or described herein are subject to change in any manner at any time without notice. No rights under any patent
accompany the sale of any such product(s) or information contained herein.
For the most current data and application support visit www.artesyn.com/powergroup/products.htm
PIN CONNECTIONS
PIN NUMBER FUNCTION
1+Vin
2 Remote On/Off
3 No Function
4-Vin
5 -Vout
6 -Sense
7 Trim
8 +Sense
9 +Vout
EXB250 Series
Single output
DC-DC CONVERTERS 72-165 W High Efficiency DC-DC Converters 3
Please consult our website for the following items: Application Note Longform Datasheet www.artesyn.com
File Name: exb250s.pdf Rev (02): 06 Dec 2005
9
8
4
3
2
6
1
5
Ø0.128 [Ø3.25]
(4 PLS)
Ø0.054 [Ø1.37]
(7 PLS)
Ø0.094 [Ø2.39]
(2 PLS)
2.280 [57.91]
2.000
[50.80] 2.400
[60.96]
0.200 [5.08]
0.190 [4.83] 1.900 [48.26]
1.700 [43.18]
1.300 [33.02]
1.000 [25.40]
Recommended Hole Pattern
0.700 [17.78]
0.300 [7.62]
0.000 [0.00]
7
Ø0.080
(2 PLS)
1.700 [43.18]
1.300 [33.02]
1.000 [25.40]
0.700 [17.78]
0.300 [7.62]
0.000 [0.00]
M3x0.5 Threaded
Through (4 PLS)
Ø0.040
(7 PLS)
1
2
3
45
6
7
8
9
0.500 [12.70]
*0.21 [5.33]
ALL DIMENSIONS IN INCHES [mm]
*Standard available pin length.
0.145 (3.68) and 0.110 (2.79)
options also available. (See
Notes 8 and 9 for ordering details).
BOTTOM
VIEW
TOP
VIEW
International Safety Standard Approvals
UL/cUL : UL1950 File No. E135734
TÜV TÜV Rheinland File No. 10401-336-0209. Licence No. 40013414
CB Scheme No.DE1-32227
