BXB75 SERIES Dual output • • • • • • • • • 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. [ 2 YEAR WARRANTY ] SPECIFICATION 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 All specifications are typical at nominal input, full load at 25°C unless otherwise stated OUTPUT SPECIFICATIONS Voltage adjustability EMC CHARACTERISTICS Each output ±5.0% Set point accuracy Conducted emissions (See Note 3) Bellcore 1089, FCC part 15 EN55022, CISPR22 Level A Level A ±2.0% GENERAL SPECIFICATIONS Line regulation ±0.25% Load regulation ±0.50% Efficiency Minimum load (See Note 14) 1A Undershoot Ripple and noise 5Hz to 20MHz See table Isolation voltage (See Note 13) Input/case Input/output Output/case Switching frequency Fixed None Each output (See Note 1) 100mV pk-pk, 40mV rms max. Temperature coefficient Approvals and standards 400kHz VDE0805, EN60950, IEC950 UL1950, CSA C22.2 No. 950 ±0.01%/°C Case material Transient response (See Note 2) ±2.0% max. deviation 300µs recovery to within ±1.0% Remote sense None INPUT SPECIFICATIONS 48Vin nominal 36 to 75VDC Input current No load Remote OFF 150mA max. 25mA max. Input current (max.) (See Note 4) 3.3V/2.5V 2.5A max. @ lo max. and Vin = 0 to 75V 3.5A max. @ lo max. and Vin = 0 to 75V 5V/3.3V (See Note 6) Active low remote ON/OFF Logic compatibility ON OFF 20mA pk-pk (See Note 7) Ref. to -input CMOS/TTL 1.2VDC max. 3.5VDC min. or open circuit Undervoltage lockout Aluminum baseplate with plastic case Material flammability UL94V-0 Weight MTBF Input voltage range Input reflected ripple 127g (4.5 oz) Bellcore 332 (calculated) Thermal performance Operating case temp. -40°C to +100°C Non-operating -50°C to +110°C Altitude Operating Non-operating Vibration 5Hz to 500Hz PAGE 1 10ms, max. 2.5ms max. 10,000 feet max. 40,000 feet max. 2.4G rms (approx.) International Safety Standard Approvals VDE0805/EN60950/IEC950 File No. 10401-3336-1095 Licence No. 6249 30V typ. Power up Remote ON/OFF >2,000,000 hours ENVIRONMENTAL SPECIFICATIONS UL1950 File No. E136005 Start-up time (See Note 8) 1000VDC 1500VDC 1500VDC CSA C22.2 No. 950 File No. LR41062C DC/DC CONVERTERS 60-75W DC/DC | 60 to 75 Watt Wide input DC/DC converters OUTPUT POWER (MAX.) INPUT VOLTAGE OVP OUTPUT VOLTAGE OP1 OP2 OUTPUT CURRENT (MIN.) (14) OUTPUT CURRENT (MAX.) (12) 2 3 4 5 6 7 8 9 10 11 12 13 14 LINE MODEL NUMBER (7) LOAD 60W 36-75VDC 4.0/3.0VDC 3.3V 2.5V 1A 15A 74% (10) ±0.25% ±0.50% BXB75-48D3V3-2V5FL 75W 36-75VDC 6.0/4.0VDC 5V 3.3V 1A 15A 82% (9) ±0.25% ±0.50% Notes 1 REGULATION TYPICAL EFFICIENCY Measured with 10µF tantalum capacitor and 0.1µF ceramic capacitor across output. di/dt = 1A/1µs, Vin = 48VDC, Tc = 25°C, load change = 0.5 lo max. to 0.75 lo max. and 0.75 lo max. to 0.5 lo max. Units should be characterised within systems. External components required. Input fusing is recommended based on surge current and maximum input current. This product is only for inclusion by professional installers within other equipment and must not be operated as a stand alone product. Simulated source impedance of 12µH. Option with active high remote on/off (standard product is active low) is available. Designate with the suffix ‘FH’, e.g. BXB75-48D05-3V3FH. BXB75-48D3V3-2V5FH is not available. Start-up in resistive load. 5V at 15A. Measured with 15A load on 3.3V output and 5A load on 2.5V output. Numbers in brackets refer to output 1. Combined maximum output current that may be drawn from both channels simultaneously is 20A (i.e. current from OP1 + current from OP2). Connect input to case when performing hipot test from output to case. 1A minimum load required on the higher voltage output. BXB75-48D05-3V3FL PROTECTION Short circuit protection 5V/3.3V Continuous, 25A max. auto restart Continuous, 32A max. auto restart 3.3V/2.5V Input surge protection 100VDC for one second max. non repetitive Reverse voltage protection (See Note 4) Yes, up to 17A with source impedance of 5 ohms Overvoltage protection Latching, 120% Vout Undervoltage protection Thermal protection Non-latching 110°C baseplate, automatic recovery TELECOM SPECIFICATIONS Central office interface A ETS300-132-2 EXTERNAL OUTPUT TRIMMING (11) Output can be externally trimmed by using the method shown below. 9 (6) PIN CONNECTIONS PIN NUMBER 1 TRIM FUNCTION UP 8 (5) RT1 OR RT2 - Vin TRIM DOWN 2 Case 3 Remote ON/OFF 4 + Vin 5 OP1 Trim 6 OP1 Return 7 OP1 8 OP2 Trim 9 OP2 Return 10 OP2 10 (7) 0.20 MIN (5.08) VIEW SHOWN PIN SIDE UP 10 1 9 2.40 (60.96) 2 1.400 (35.560) 2.000 (50.800) 8 0.400 1.000 (10.16) (25.400) 0.600 (15.24) 7 3 SIDE 1.600 (40.640) VIEW 6 4 5 Ø0.040 ±0.003 (Ø1.016 ±0.080) 10 Places 1.900 (48.26) 4 X M3 x 0.5 Through 0.50 (12.70) 2.28 (57.91) ALL DIMENSIONS IN INCHES (mm) ±0.02in. (0.51mm) ±0.010in. (0.254mm) Data Sheet © Artesyn Technologies® 2002 The information and specifications contained in this data sheet are believed to be correct at time of publication. However, Artesyn Technologies accepts no responsibility for consequences arising from printing errors or inaccuracies. Specifications are subject to change without notice. No rights under any patent accompany the sale of any such product(s) or information contained herein. Please consult our website for the following items: ✔ Application Note ✔ Simscope™ http://www.artesyn.com PAGE 2 DS_BXB75D_20020424.PDF TOLERANCE : x.xx x.xxx