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EXB250-48S05J 데이터시트 PDF




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EXB250-48S05J 데이터시트, 핀배열, 회로
EXB250 Series
Single output
DC-DC CONVERTERS 72-165 W High Efficiency DC-DC Converters
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
1
TÜV
2 YEAR WARRANTY
SPECIFICATIONS
OUTPUT SPECIFICATIONS
Voltage adjustability
90% to 110%
Set point accuracy
±1.6% max.
Line regulation
Low line to high line
1.2 V model
All other models
±0.2% max.
±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),
2.5 V (Z) and 3.3 V (Z) models
None
Ripple and noise
5 Hz to 20 MHz
60 mV pk-pk
20 mV rms
Transient response
(See Note 1)
6% max. deviation
150 µs recovery to
within total error band
INPUT SPECIFICATIONS
Input voltage range
48 Vin nominal
33-75 Vdc
Input current
No load
Remote OFF
145 mA max.
35 mA max.
Input current (max.)
(See Note 3)
5.7 A max. @ Io max.
and Vin = 33-75 Vdc
Input reflected ripple
(See Note 5)
350 mA (pk-pk) typ.
Active high remote ON/OFF
Logic compatibility
ON
OFF
Open collector ref to -input
Open circuit or >4.0 Vdc
<1.2 Vdc
Undervoltage lockout
Power up
Power down
32.5 V (typ.)
30.5 V (typ.)
Start-up time
(See Note 6)
Power up
Remote ON/OFF
10 ms (typ.)
3 ms (typ.)
EMC CHARACTERISTICS
Conducted emissions
Immunity:
ESD air
ESD contact
Radiated field enclosure
Conducted (DC power)
Conducted (signal)
Input transients
EN55022 (See Note 2)
EN55022 (See Note 2)
Level A
Level B
EN61000-4-2 8 kV (NP), 15 kV (NP)
EN61000-4-2
6 kV (NP), 8 kV (NP)
EN61000-4-3
10 V/m (NP)
EN61000-4-6
10 V (NP)
EN61000-4-6
10 V (NP)
ETS 300 132-2, ETR 283
GENERAL SPECIFICATIONS
Efficiency
See table
Operational
Input/output
Input/baseplate
1500 Vdc
1500 Vdc
Switching frequency
Fixed
400 kHz typ.
Approvals and
standards (See Note 4)
EN60950 (TÜV Rheinland)
UL/cUL1950
Material flammability
UL94V-0
Weight
73 g (2.6 oz)
MTBF
Telcordia SR-332
@ 25 °C, 100% load
ground benign
Demonstrated
1,598,243 hours
>2,000,000 hours
ENVIRONMENTAL SPECIFICATIONS
Thermal performance
Operating baseplate -40 °C to +100 °C
temperature
Non-operating
-40 °C to +125 °C
File Name: exb250s.pdf Rev (02): 06 Dec 2005





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