NEW 3.3V Output AA50A 50 Watts AA50A Series Total Power 50 Watts Input Voltages 24V or 48V # of Outputs Single, Triple Electrical Specifications Input Special Features • • • • • • Isolated Output 3.6:1 input range 5 year warranty 4.0" x 2.6" x 0.5" case Parallelable (singles only) Six sided shielding Input Range .......................... 20 to 72 VDC Input Surge Voltage .............. 100V for 100ms Input Reflected Ripple ........... <1MA See Note 2 Input Capacitance ................. 2.2mF (typical) Efficiency ............................... 82% typical Input Reverse ........................ Fuse recommended Voltage Protection Environmental Control Operating Temperature Ambient: -40°C to +60°C FL, No derating Operating Temperature (baseplate): 105°C max Enable ................................... TTL compatible (high to enable or open circuit) Paralleling ............................. Singles only Humidity (Non-condensing): 5% to 95% Storage Temperature: -40°C to +105°C MTBF: 312,000 hours (MIL HDBK-217F) Safety UL UL 1950 Notes Note 1- An external 0.1mf ceramic capacitor is recommendd to be placed from the +V out to the -V out. Note 2- Requires a 2.2mf, 100V film capacitor connected between +Vin and -Vin to meet FCC Class A and ETS300-381-1. Output Voltage Tolerance .................. + 1% (Main) Output 2&3 (12V); +6.0%, -0% Output 2&3 (15V); +3%, -6% Line Regulation ..................... +0.5% (Main); +1% (Aux) Load Regulation .................... + 1% (Main) 10%-FL; + 5% (Aux); 10%L to FL, bal. Ripple/Noise .......................... 1% mV P-P; bandwidth 20 MHz; See note 1 below Temperature Coefficient ........ +0.02%/°C (max) Short Circuit Protection ......... ContinuousPower Cycle Output 1,2 and 3 Overvoltage Protection ......... Zener (Main only) Transient Response .............. 300 msec (50% step) Switching Frequency ............. 330 kHz typical Isolation I/O Isolation ........................... 1500 VDC Isolation Resistance .............. 1 x 109 ohms All specifications are typical at nominal line, full load, and 25°C unless otherwise noted. Specifications subject to change without notice. 138 North America: 760-930-4600 Europe (UK): 01384-842211 Ordering Information Input Voltage Output 1 Voltage 20-72VDC 20-72 VDC 20-72 VDC 20-72 VDC 20-72 VDC 20-72 VDC Output 2 Voltage 3.3V @ 12.0A 5V @ 10.0A 12V @ 4.2A 15V @ 3.4A 5V @ 6.0A 5V @ 6.0A Output 3 Voltage 12V @ 0.750mA 15V @ 0.650mA Maximum Power -12V @ 0.750mA -15V @ 0.650mA 40W 50W 50W 50W 50W 50W Model Number AA50A-048L-0335 AA50A-048L-050S AA50A-048L-120S AA50A-048L-150S AA50A-048L-050T120 AA50A-048L-050T150 Please contact Astec for information on other output voltages, power ranges and configurations. Pin Assignment 20-72V Input Single Output 20-72V Input Triple Output 1. 2. 3. 4. 5. 6. 7. 8. 9. 1. 2. 3. 4. 5. 6. 7. 8. 9. +Vin -Vin NC (Reserved) NC (Reserved) NC (Reserved) Output 1 COMM Enable Parallel DC/DC CONVERTERS TERSAA50A ASTEC EUROPE Astec House, Waterfront Business Park Merry Hill, Dudley West Midlands, DY8 4PG, UK Telephone: 01384-842211 Facsimile: 01384-843355 ASTEC AMERICA 6339 Paseo Del Lago Carlsbad, CA 92009 Telephone: 760-930-4600 Facsimile: 760-930-0698 +Vin -Vin Output 2 RTN AUX Output 3 Output 1 COMM Enable NC (Reserved) Dimensions .04 (1.01) .50 (12.70) .15 MIN. (3.81) .040 DIA. TYP. (1.01) 4.00 (101.60) 3.50 (88.90) .25 (6.35) 2.50 (63.50) 2.10 (53.34) .145 DIA MTG HOLES 4 PLCS .300 (7.62) .300 (7.62) 7 .400 (10.16) 2.60 (66.04) 1.00 (25.40) .700 (17.78) 2 6 1 8 5 9 4 .500 (12.70) .800 (20.32) 3 .200 (5.08) .25 (6.35) .600 (15.24) .05 (1.27) .50 (12.70) .30 (7.62) 2.500 (63.50) 3.00 (76.20) Case material : six-sided, metal Weight: 7.2 oz./200 grams TOP VIEW ALL DIMENSIONS ARE IN INCHES (mm) Power Fax 760-930-0881 Doc No:1352 • Rev 9.15.97 139