100 Watts Total Power: Input Voltages: No. of Outputs: 100 Watts 48V Dual ALQ20-Dual High Efficiency Electrical Specs Input Input Range Input Surge 36 to 75 VDC 100V /100ms Efficiency2 3.3V/1.5V @ 90% 3.3V/1.2V @ 90% Output Line / Load Regulation Load Current < 1% Vo 20A max per channel Noise/Ripple1 30mVPK-PK typical Transient Response Over Voltage Protection Over Current Protection 40mV typical deviation (50% to 75% Step Load) < 300µs settling time (typ) 130% Vo Typ (latching) 130% IO,max Typ (autorecovery) Over Temperature Protection Switching Frequency Isolation Voltage 115ºC average PCB temperature (autorecovery) 410kHz (typ) 1500Vdc Special Features • • • • • • • Industry standard Dual O/p 1/4 Brick Footprint Open Frame Construction Low Ripple and Noise1 < 30mVPK-PK Regulation to zero load High Capacitive Load start-up Fixed Frequency Switching for EMI predictability Industry Standard features: OVP, OCP, OTP, Input UVLO, Enable, Trim • Input Under Voltage Lockout with hysteresis • Output Voltage Adjustability • Meets Basic Insulation Control Voltage Adjust ±10% VO,NOM Enable TTL compatible (Positive or Negative options) Environmental Operating Ambient Temperature -40°C to +85°C Storage temperature: -55°C to +125°C MTBF: > 1 Million Hrs Safety UL, cUL 60950 Recognized (Pending) TUV EN60950 Licensed (Pending) 2 North America (USA): 1-888-41-ASTEC Europe (UK): 44 (1384) 842-211 Asia (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 Ordering Information Input Volatge Output Voltage Vo1 Vo2 Output Current Io1 Io2 Efficiency2 Model Number 36V to 75V 36V to 75V 36V to 75V 3.3V 3.3V 3.3V 20A 20A 15A 90% 90% 90% ALQ20FM48(N) - (6) ALQ20FK48(N) - (6) ALQ15FK48(N) - (6) 1.5V 1.2V 1.2V 20A 20A 15A OPTIONS: Enable Function "N" = Negative Logic Enable (default is Positive Logic Enable - no suffix “N”) Pin Length “-6” = 3.7mm nominal pin length (default is 5mm nominal - no suffix “6”) Pin Assignment Dual Output Mechanical Outline 1. +Vin 2. Enable (On/Off) 3. -Vin 4. +VO2 5. Secondary Return/Ground 6. Trim 7. +VO1 Notes: 1. 20 MHz bandwidth. External 10 uF tant. capacitor in parallel with 1 uF ceramic capacitor placed output and secondary return ground. 2. Efficiency measurements taken at full load - balanced output load current, nominal line and TA = 25°C. 3. All specifications are typical at nominal line, full load and TA = 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. This is a Preliminary Data Sheet. Astec reserves the right to make changes to the information contained herein without notice and assumes no liability as a result of its use and application. (REV A: APRIL12, 2004) www.astecpower.com Dimensions are in inches [millimeters] Pin placement tolerance ± 0.005 [0.127] Mechanical Tolerance ± 0.02 [0.5] 3