EXB250-48S1V2-R

EXB250 Series Single output DC-DC CONVERTERS 72-165 W High Efficiency DC-DC Converters 1 • 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. TÜV 2 YEAR WARRANTY SPECIFICATIONS All specifications are typical at nominal input, full load at 25 °C unless otherwise stated OUTPUT SPECIFICATIONS EMC CHARACTERISTICS 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% Conducted emissions EN55022 (See Note 2) EN55022 (See Note 2) Immunity: ESD air ESD contact Radiated field enclosure Conducted (DC power) Conducted (signal) Input transients EN61000-4-2 8 kV (NP), 15 kV EN61000-4-2 6 kV (NP), 8 kV EN61000-4-3 10 V/m EN61000-4-6 10 V EN61000-4-6 10 V ETS 300 132-2, ETR 283 Overshoot At turn-on and turn-off None GENERAL SPECIFICATIONS Undershoot 1.2 V, 1.5 V (Z), 1.8 V (Z), 2.5 V (Z) and 3.3 V (Z) models None Efficiency Ripple and noise 5 Hz to 20 MHz Transient response (See Note 1) 60 mV pk-pk 20 mV rms 6% max. deviation 150 µs recovery to within total error band Input/output Input/baseplate Switching frequency Fixed Input voltage range 48 Vin nominal Weight Input current No load Remote OFF Input current (max.) (See Note 3) Input reflected ripple 33-75 Vdc 145 mA max. 35 mA max. MTBF 5.7 A max. @ Io max. and Vin = 33-75 Vdc (See Note 5) Active high remote ON/OFF Logic compatibility ON OFF 350 mA (pk-pk) typ. 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.) EN60950 (TÜV Rheinland) UL/cUL1950 UL94V-0 73 g (2.6 oz) Telcordia SR-332 @ 25 °C, 100% load ground benign Demonstrated 1,598,243 hours >2,000,000 hours ENVIRONMENTAL SPECIFICATIONS Thermal performance Open collector ref to -input Open circuit or >4.0 Vdc