Astec Industry Standard 300W Total Power: Input Voltages: No. of Outputs: 300 Watts (12V @ 25A) 48 V Single AEH25 Ultra High Efficiency Electrical Specs Input Input range Input Surge Efficiency 36-75 VDC 100V / 100ms 93% @ 12V (Typical) Control Enable TTL compatible (positive or negative enable logic control options) Output Special Features • • • • • • • • High efficiency, 12V@ 93% (Typical) Industry Standard Half Brick baseplate design Low output ripple and noise High capacitive load limit on start-up Remote sense compensation Regulation to zero load Fixed frequency switching Industry Std features: Input UVLO, OCP, OVP, OTP; Short ckt protection; ±10% Output Adjust • Positive or Negative enable logic control option • Meets Basic Insulation Regulation (Line, Load, Temp) <2% Ripple and Noise1 Remote Sense 120mV tyical Up to 10%Vout Output Voltage Adjust Range ±10% of nominal output Transient Response 180mV typical output deviation 25% step change 300 µS recovery time Overvoltage Protection 115% nominal output Overcurrent Protection 116% Io nominal Isolation Voltage 1500 Vdc Environmental Operating temperature -40°C to +100°C Baseplate Storage temperature: -55°C to +125°C Overtemperature protection: 110°C typical MTBF: >1 million hours Safety UL, cUL 60950 Recognized TUV 2 EN60950 Licensed North America (USA): 1-888-41-ASTEC Europe (UK): 44 (1384) 842-211Asia (HK): 852-2437-9662 AMERICAS EUROPE ASIA 5810 Van Allen Way Carlsbad, CA 92008 Telephone: 760-930-4600 Facsimile: 760-930-0698 Astec House, Waterfront Business Park Merry Hill, Dudley West Midlands, DY5 1LX, UK Telephone: 44 (1384) 842-211 Facsimile: 44 (1384) 843-355 Units 2111-2116, Level 21 Tower1, Metroplaza 223, Hing Fong Road Fwai Fong, New Territories Hong Kong Telephone: 852-2437-9662 Facsimile: 852-2402-4426 AEH25B48 Ordering Information Input Voltage Output Voltage / Current Efficiency Model Number 36V to 75V 12V @ 25A 93% AEH25B48(N)-(5)(6)(T) OPTION: suffix “N” non suffix “N” suffix “-6” suffix “-5” default pin length suffix “T” = = = = = = Negative Enable Positive Enable (default) 3.7mm pin length 4.5mm pin length 5mm nominal pin length “Tuned” version for slow start up time Typical efficiency measurement taken at nominal line, full load, 25°C ambient. Pin Assignments Single Output 1. 2. 3. 4. 5. 6. 7. 8. 9. +Vin Enable (On/Off) Case (AEH) -Vin - Output - Sense Trim + Sense + Output Notes: * Astec reserves the right to make changes to the information contained herein without notice and assumes no liability as a result of its use or application. (REV06: JANUARY 26, 2006) www.astecpower.com 2.30 [58.4] 1.90 [48.3] 0.20 [5.1] 0.20 [5.1] 0.50 [12.7] 0.20 [5.2] M 3 X0.5 M OUNTING HOLE 4 PLACES see A 0.08Ø [2.0Ø]2 PLACES + Output + Vin 0.04Ø [1.0Ø]7 PLACES 2.00 2.40 [50.8] [61.0] -Vin -Output 0.46 [11.8] PIN SIDE DOW N 1.90 [48.3] 0.50 [12.7] SIDE VIEW 0.50 [12.7] PIN ASSIGNM ENT 0.90 1.20 [22.8] 1.50 [30.4] 1.90 [38.1] [48.3] 4 5 6 3 7 2 9 1 PIN SIDE UP 0.90 [22.9] 1.20 [30.5] 1.50 [38.2] 1.90 [48.3] 1 + Vin 2 Enable (On/Off) 3 CASE 4 -Vin 5 -Output 6 -Sense 7 Trim 8 + Sense 9 + Output NOTE: All dimensions are in Inches [millimeters] NOTES: Pin Placement Tolerance: ± 0.005 [0.127] ALL DIM ENSIONS ARE IN INCHES (M ILLIM ETERS) Mechanical ± 0.002 PIN PLACEMTolerance: ENT TOLERANCE :± [0.5] 0.005(0.127) M ECHANICAL TOLERANCE ± .002(0.5) Astec Industry Standard 1. 20 MHz BW with external 10uF/25V tantalum in parallel with 0.1uF/50V X7R ceramic capacitor placed across the output. 2. Requires a 2.2 uf, 100V film capacitor connected between +V in and -V in to meet FCC class A and ETS300-386-1 requirements for conducted noise. Consult Factory for filtering information to meet FCC class B, VDE or EIC specifications. 3. All specifications are typical at nominal line, full load, and 25°C unless otherwise noted. 4. All specifications subject to change without notice. Mechanical drawings are for reference only 5. Technical Reference Notes should be consulted for detailed information when available 6. Warranty: 1yr PIN LENGTH OPTION “-5”: 4.5mm nom “-6”: 3.7mm nom default is 5mm nom 3