BXB75 SERIES Single output • • • • • • • • • The BXB75 Series are high power density DC/DC converters packaged in the industry standard footprint (2.40 x 2.28 x 0.50 inches) to give designers optimum choices when specifying for both new and replacement designs. Suitable for a wide range of applications in nearly any industry, the BXB75 was particularly designed with communication and distributed power applications in mind. Using Bellcore 332, the MTBF is greater than 1,400,000 hours. Aluminum baseplate technology with four threaded M3 inserts makes heatsink attachment and optimum thermal management easy. The BXB75 series is approved to IEC950 by UL, CSA and VDE. [ 2 YEAR WARRANTY ] SPECIFICATION Industry standard footprint MTBF >1.4 million hours (Bellcore 332) Input voltage to ETS300-132-2 Adjustable output voltage No minimum load required Separate case ground pin 2:1 input range for battery powered applications 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 INPUT SPECIFICATIONS CONTINUED Voltage adjustability 60% to 110% Set point accuracy Low line to high line ±0.05% Load regulation Full load to min. load ±0.10% Minimum load 0% At turn-on and turn-off Undershoot Ripple and noise (5Hz to 20MHz) (See Note 1) 24Vin: 24Vin: 48Vin: 48Vin: Start-up time (See Note 8) Power up Remote ON/OFF ±1.0% Line regulation Overshoot Undervoltage lockout None 12V and 15V Temperature coefficient 75mV pk-pk, 20mV rms 100mV pk-pk, 30mV rms ±0.01%/°C Transient response (See Note 2) ±2.0% max. deviation 170µs recovery to within ±1.0% Remote sense 0.5VDC transmission line drop compensation Conducted emissions (See Note 3) Efficiency See table Isolation voltage Input/case Input/output Output/case Switching frequency Fixed Approvals and standards (See Note 5) 24Vin nominal 48Vin nominal 18 to 36VDC 36 to 75VDC Material flammability Input current No load Remote OFF 100mA max. 20mA max. Weight Input current (max.) (See Note 4) 48V models 3.5A max. @ Io max. and Vin = 0 to 75V Input reflected ripple (See Note 6) 5mA pk-pk PAGE 150 Level A Level A Level A GENERAL SPECIFICATIONS Input voltage range (See Note 7) Open collector ref to -input 1.2VDC max. Open circuit 17V 16V 34V 32.5V 20ms 20ms Bellcore 1089 FCC part 15 EN55022, CISPR22 MTBF 1500VDC 1500VDC 1500VDC 500kHz typ. VDE0805, EN60950, IEC950 UL1950, CSA C22.2 No. 950 Case material INPUT SPECIFICATIONS Active low remote ON/OFF Logic compatibility ON OFF up down up down EMC CHARACTERISTICS None 3.3V and 5V power power power power Aluminum baseplate with plastic case UL94V-0 110g (3.88oz) Bellcore 332 1,400,000 hours MIL-HDBK-217F 580,000 hours @ 40°C, 100% full load min. ENVIRONMENTAL SPECIFICATIONS Thermal performance Operating case temp. -40°C to +100°C Non-operating -55°C to +125°C Altitude Operating Non-operating Vibration 5Hz to 500Hz 10,000 feet max. 40,000 feet max. 2.4G rms (approx.) DC/DC CONVERTERS | 50-75W DC/DC 50 to 75 Watt Wide input DC/DC converters OUTPUT POWER (MAX.) INPUT VOLTAGE OVP OUTPUT VOLTAGE OUTPUT CURRENT (MIN.) OUTPUT CURRENT (MAX.) EFFICIENCY (TYP.) LINE LOAD MODEL NUMBER (7) 50W 18-36VDC 4.3VDC 3.3V 0A 15A 78% ±0.05% ±0.1% BXB75-24S3V3FLT 75W 18-36VDC 6.5VDC 5V 0A 15A 82% ±0.05% ±0.1% BXB75-24S05FLT 75W 18-36VDC 14.5VDC 12V 0A 6.25A 83% ±0.05% ±0.1% BXB75-24S12FLT 75W 18-36VDC 17.5VDC 15V 0A 5.0A 84% ±0.05% ±0.1% BXB75-24S15FLT 50W 36-75VDC 4.3VDC 3.3V 0A 15A 79% ±0.05% ±0.1% BXB75-48S3V3FLT 75W 36-75VDC 6.5VDC 5V 0A 15A 83% ±0.05% ±0.1% BXB75-48S05FLT 75W 36-75VDC 14.5VDC 12V 0A 6.25A 84% ±0.05% ±0.1% BXB75-48S12FLT 75W 36-75VDC 17.5VDC 15V 0A 5.0A 85% ±0.05% ±0.1% BXB75-48S15FLT Notes 1 2 3 4 5 6 7 8 REGULATION PROTECTION Measured with 10µF tantalum capacitor and 1µF ceramic capacitor across output. di/dt = 0.1A/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. 12µH inductor in series with +Vin. Active high remote on/off option is available (standard product is active low), designate with the suffix ‘FHT’ e.g. BXB75-48S05FHT. Consult factory for further details and options. Start-up into resistive load. Short circuit protection Continuous, automatic recovery Overvoltage protection Non-latching Undervoltage protection Non-latching Thermal protection 110°C baseplate, automatic recovery TELECOM SPECIFICATIONS Central office interface A ETS300-132-2 EXTERNAL OUTPUT TRIMMING 5 Output can be externally trimmed by using the method shown below. International Safety Standard Approvals 8 VDE0805/EN60950/IEC950 File No. 10401-3336-1095 TRIM UP UL1950 File No. E136005 RT1 OR RT2 7 CSA C22.2 No. 950 File No. LR41062C TRIM DOWN 6 PIN CONNECTIONS VIEW SHOWN PIN SIDE UP FUNCTION 1.90 (48.26) Remote ON/OFF 3 Case 0.500 (12.69) ± 0.010 (0.25) CASE 1.000 (25.40) - Vin 5 - Vout 6 - Sense 7 Trim 8 + Sense 9 + Vout VI(+) 4 ON/OFF 0.400 (10.16) 1.400 (35.56) Vo (-) 2 +SEN TRIM -SEN + Vin VI (-) 1 0.200 (5.08) Min. Length for all Input and Output Pins 0.190 (4.83) ± 0.010 (0.25) 0.700 (17.77) 0.400 (10.16) 1.000 (25.40) 2.000 (50.80) 2.40 (60.96) Max. 1.400 (35.56) Vo(+) PIN NUMBER 7 x Ø.040 (1.02) ±0.002 (0.05) 0.190 (4.83) ±0.010 (0.25) 2.28 (57.91) Max. 2 x Ø.080 (2.03) ± 0.002 (0.05) 4 x M3 x 0.5 Through 0.500 (12.70) ALL DIMENSIONS IN INCHES (mm) Tolerance : x.xx ±0.02in. (0.51mm) x.xxx ±0.010in. (0.254mm) Please consult our website for the following items: ✔ Application Note ✔ Simscope™ http://www.artesyn.com PAGE 151 DS_BXB75S_20000101.PDF Data Sheet © Artesyn Technologies® 2000 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.