BXA75 SERIES Single output • • • • • • • The BXA75 series are high density DC/DC converters ideally suited for a wide variety of communications, industrial, computer and distributed power applications. With up to 80 Watts of power in a 3.5 x 2.4 x 0.5 inch package and efficiencies as high as 87%, the BXA75 can address a host of demanding power requirements, offering a wide input range of 36-75VDC with industry standard outputs of 3.3V, 5V, 12V and 15V. Approval to EN60950 and EN41003 coupled with conducted emissions compliance to CISPR 22, FCC and EN55022 level A, facilitate easy and cost effective design-in for communications systems. The demands of industrial systems are met by a baseplate operating temperature range of –25°C to 85°C, overvoltage, overtemperature and short circuit protection, along with tight load and line regulation and output ripple as low as 15mV rms. Other standard features include remote enable, remote sense and external trim. [ 2 YEAR WARRANTY ] SPECIFICATION 3.5 x 2.4 x 0.5 inch package with stand-offs 19 Watts/in3 power density Efficiency up to 87% CISPR 22 and EN55022 conducted emissions level A UL, VDE and CSA safety approvals Indefinite short circuit protection Baseplate operating temperature range of –25°C to +85°C All specifications are typical at nominal input, full load at 25°C unless otherwise stated OUTPUT SPECIFICATIONS Voltage adjustability EMC CHARACTERISTICS 3.3V and 15V 5V and 12V +10%, -3.0% +10%, -5.0% Voltage accuracy ±0.5% Remote sense 0.5V line drop compensation Total error band (See Note 2) ±2.0% Line regulation Typical ±0.15% Load regulation Typical ±0.3% Ripple and noise 5Hz-20MHz, 50mV pk-pk (See Note 3) 15mV rms max. No external capacitor 100mV pk-pk, 25mV rms max. Conducted noise Surge susceptibility GENERAL SPECIFICATIONS Efficiency See table Isolation voltage 1500VDC Switching frequency VDE0805, EN60950 IEC950, UL1950 CSA C22.2 No. 950 Case material Plastic with aluminum baseplate ±4.0% max. dev. 100µs recovery to within 1% Vo Material flammability Temperature coefficient ±0.02%/°C Max. MTBF (See Note 5) Yes, see table Short circuit protection Continuous automatic recovery Input filter Remote ON/OFF Logic compatibility ON OFF Shutdown idle current Yes (Ref. to -Vin) CMOS/TTL >3.5VDC or open circuit <0.8VDC Less than 50mA International Safety Standard Approvals VDE0805/EN60950/IEC950 File No. 10401-3336-1073 UL1950 File No. E136005 CSA C22.2 No. 950 File No. LR41062C PAGE 1 160g (5.65oz) Bellcore, 25°C baseplate 2,600,000 hours minimum ENVIRONMENTAL SPECIFICATIONS Thermal performance (See Note 6) Operating, See curves -25°C to +85°C Non-operating –55°C to +125°C Over temperature 115°C internal shutdown temperature auto. recovery Altitude Operating Non operating 10,000 feet max. 40,000 feet max. Vibration 5Hz to 500Hz 2.4G RMS (approx.) 36 to 75VDC (See Note 4) UL94V-0 Weight INPUT SPECIFICATIONS Input voltage range 500kHz ±5.0% Approvals and standards Transient response (75% to 100% load step) Overvoltage protection EN55022, FCC (See Note 4) Level A 100V No damage 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. DC/DC CONVERTERS | 66-75W DC/DC 66 to 75 Watt Wide input DC/DC converters INPUT VOLTAGE OUTPUT VOLTAGE OUTPUT CURRENT 36-75VDC 3.3V 20.0A 4VDC 2.18A 79% ±0.1% ±0.1% BXA75-48S3V3 36-75VDC 5.0V 15.0A 6.2VDC 1.95A 83% ±0.1% ±0.1% BXA75-48S05 36-75VDC 12.0V 6.3A 14VDC 1.85A 86% ±0.1% ±0.1% BXA75-48S12 36-75VDC 15.0V 5.0A 18VDC 1.80A 87% ±0.1% ±0.1% BXA75-48S15 OVP INPUT CURRENT (5) Notes 1 2 3 4 5 6 REGULATION LINE LOAD EFFICIENCY (1) MODEL NUMBER (6) EXTERNAL OUTPUT TRIMMING At nominal input and output voltage and maximum load. Total error band is defined as the static output regulation at 25°C including initial setting accuracy, input voltage within stated limits and output current within stated limit. Measured with 10µF tantalum capacitor across output. EMI measured on either line into a 50Ω LISN with 120µF electrolytic input capacitor. Overvoltage limit may be tested by applying -5V to -15V to the trim pin 11 with respect to –sense pin 18. To order optional standard heatsink, please add suffix ‘-1’ to model number e.g. BXA75-48S05-1. Output can be externally trimmed by using either method shown below. + Sense 10K TRIM DOWN - Sense TRIM UP TRIM UP/DOWN TRIM PIN CONNECTIONS PIN NUMBER FUNCTION PIN NUMBER FUNCTION 1 – Vin 10 No Pin 0.02 (0.5) 0.45 (11.5) 0.04 Dia. (1.02) 2 3 – Vin 11 + Vin Trim 12 + Sense 0.2 (5.1) 0.2 (5.1) 2.4 0.2 (5.1) (60.9) 17 2 16 3 15 + Vin 13 5 No Pin 14 + Vout 6 No Pin 15 No Pin 7 Remote On/Off 16 – Vout 8 No Pin 17 – Vout 9 No Pin 18 – Sense 0.2 (5.1) 0.2 (5.1) 12 0.2 (5.1) 11 7 10 8 0.7 (17.9) 0.2 (5.1) 0.4 (10.2) 13 6 + Vout 0.2 (5.1) 14 View from Underside (Pin Side) 5 4 18 1 4 0.6 (15.2) 0.3 (7.62) M3 x 0.5 Metric Tap Thru 0.22± 0.03 Dia. Standoff 0.15 (3.8) 9 0.15 (3.8) 0.7 (17.9 ) 3.2 (81.3) 0.5 0.15 (12.7) (3.8) MIN. LENGTH 3.5 (88.9) View fr ALL DIMENSIONS IN INCHES (mm) Pins are in true position within .010 DIA. @ M.M.C. Tolerance (inches) : .xx = ±0.02 .xxx = ±0.005 Heatsink adds 0.74" to height of unit Temperature Derating Data TEMPERATURE DERATING WITHOUT HEATSINK BXA75-48S3V3/05 TEMPERATURE DERATING WITH HEATSINK BXA75-48S3V3/05 (See Note 6) 110 110 100 100 0 lfm 500 lfm OUTPUT POWER (% MAX.) 70 60 50 40 30 20 70 500 lfm 60 50 40 30 20 10 10 0 0 -40 -20 0 20 40 60 80 100 120 -40 -20 0 20 40 60 80 100 120 AMBIENT TEMPERATURE (deg.C) AMBIENT TEMPERATURE (deg.C) TEMPERATURE DERATING WITHOUT HEATSINK BXA75-48S12/15 TEMPERATURE DERATING WITH HEATSINK BXA75-48S12/15 (See Note 6) 110 110 100 100 0 lfm 200 lfm 90 200 lfm 0 lfm 90 80 70 500 lfm "-4" OPTION 60 50 40 30 70 60 50 40 30 20 10 DS_BXA75_19980401.PDF 20 500 lfm "-4" OPTION OUTPUT POWER (% MAX.) 80 OUTPUT POWER (% MAX.) 200 lfm 80 "-4" OPTION OUTPUT POWER (% MAX.) 80 0 lfm 90 200 lfm "-4" OPTION 90 10 0 0 -40 -20 0 20 40 60 80 100 http://www.artesyn.com 120 -40 -20 0 20 40 60 80 100 120 PAGE 2