Astec Integrated Power W9959_02_DCDC_001-073_73 2/8/02 3:55 PM Page 52 240 Watts AK80A Total Power: Input Voltages: No. of Outputs: 240 Watts 24V Single Electrical Specs Input Input Range 18 to 36 VDC Efficiency 83% typical @ 5V; 87% typical @ 12V; 87% typical @ 15V Output Load Regulation Line Regulation Noise/Ripple 0.3% typical down to no load 0.1% typical 100 mV typical (output below 5V) 2% typical (output 5V and over) Up to 0.5V Remote sense Output Voltage Adjust Range Transient Response Special Features * High efficiency - up to 87% * 500 KHz fixed frequency * 85C baseplate operating temperature (with no derating) * Low output ripple and noise * Excellent transient response * High reliability - over 1 million hours MTBF * Wide input voltage range * TTL compatible enable control * Parallelable * Adjustable output voltage and current limit * Temperature monitor output * Overtemperature and short circuit protection * Regulation to zero load Environmental Current Share Accuracy Overvoltage Protection Current Limit 10% of nominal output 10% typical deviation with 300s recovery (25-75% full load) 5% typical 130% nominal Vo 115% Io max Control Voltage Adjust Enable Current Limit Adjust Clock Input (external sync) Clock Output (internal clock) Power Good/Identification Temperature Monitor Output 90 to 110% Vo TTL compatible (low to enable) 20 to 100% Io rated 3.5 to 5Vp-p @ 1MHz 10% 4.4 to 5.5Vp-p @ 1MHz 0.5% High (Vo) = power good 10 mV/K (2.73V = 0C) Notes Operating temperature (baseplate): 0C to +85C Nominal values apply with sense pins connected and other control pins unconnected. Storage temperature: -40C to +105C Specifications subject to change without notice. Overtemperature protection: 90C typical MTBF: > 1 million hours (50C baseplate) Safety UL CSA VDE EN CE 52 UL 1950 E132002 CSA22.2-234 LR53982C CSA22.2-950 IEC950 20366-3336-1002 & 1008 60950 CEMark (LVD) America's (USA): 1-888-41-ASTEC Europe (UK): 44 (1384) 842-211 Asia (HK): 852-2437-9662 W9959_02_DCDC_001-073_73 2/8/02 3:55 PM Page 53 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 AK80A Ordering Information Input Voltage Output Voltage Output Current Model Number 24V 24V 24V 24V 3.3V 5V 12V 15V 40A 30A 14A 12A AK80A-024L-033F40 AK80A-024L-050F30 AK80A-024L-120F14 AK80A-024L-150F12 24V 24V 8A AK80A-024L-240F08 Please contact Astec for information on other output voltages, power ranges and configurations. Pin Assignments Control Pins 31. +ve 32. -ve 21. +ve 22. +ve 23. +ve 24. +ve 26. -ve 27. -ve 28. -ve 29. -ve 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. +SENSE PG/ID V ADJ -SENSE S COM C SHARE CLK OUT CLK IN ENABLE C LIM ADJ TEMP MON PRI AUX 12.7 (0.50) Output 8 PRIMARY SIDE CONTROL PINS 8 OUTPUT PINS 4 SECONDARY SIDE CONTROL PINS 2 INPUT PINS Secondary side controls 32 Primary side controls 9 12 3 4 8 5 2 1 24 23 22 21 AMPS TMPOWERMODULE 31 29 28 27 26 61.0 (2.40) Input THERMAL BASE PLATE* 116.8 (4.60) + O/P C SHARE CLK OUT 5 9 S COM 2 1 + SENSE Load 3 4 - SENSE 12 Temperature monitor output (e.g. to fan control circuit) ENABLE PG/ID goes high (to Vo) to indicate power good. Resistance between PG/ID and +O/P with no power applied indicates nominal O/P voltage, where 1K Ohm = 1 volt (eg 3K3 = 3.3 V). - O/P 18 to 36V or 36 to 72V C SHARE CLK IN 5 8 S COM 9 12 2 1 + SENSE + O/P + I/P 8 5 9 12 2 1 + SENSE Load - I/P 3 4 - SENSE - O/P 3 4 - SENSE ENABLE Enable (close to enable) Output voltage adjust Current limit adjust www.astec.com 53 Astec Integrated Power 8