AK80A 240 Watts AK80A Economy Series Total Power 240 Watts Input Voltages 24V, 48V # of Outputs Single S P E C I A L F E AT U R E S E L E C T R I C A L S P E C I F I C AT I O N S * * * Input * * * * * * * * * * 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 Input Range ........................... 36 to 72 VDC or 18 to 36 VDC Efficiency ............................... 83% typical (5V @ 40A); 87% typical (12V @ 18A); 87% typical (15V @ 16A) Control Voltage Adjust ....................... 90 to 110% Vo Enable ................................... TTL compatible (low to enable) Current Limit Adjust ............... 20 to 100% Io rated Clock Input (external sync) .... 3.5 to 5Vp-p @ 1MHz 10% Clock Output (internal clock) . 4.4 to 5.5Vp-p @ 1MHz 0.5% Power Good/Identification ..... High (Vo) = power good Temperature Monitor Output . 10 mV/K (2.73V = 0C) Output E N V I R O N M E N TA L Operating temperature (baseplate): 0C to +85C Storage temperature: -40C to +105C Overtemperature protection: 90C typical MTBF: > 1 million hours (50C baseplate) Load Regulation .................... 0.3% typical down to no load Line Regulation ..................... 0.1% typical Noise/Ripple .......................... 100 mV typical (output below 5V) 2% typical (output 5V and over) Remote sense ....................... Up to 0.5V Output Voltage Adjust Range ......................... 10% of nominal output SAFETY Transient Response .............. 10% typical deviation with 300s recovery (25-75% full load) UL UL 1950 E132002 CSA CSA22.2-234 CSA22.2-950 LR53982C VDE IEC950 20366-3336-1002 & 1008 EN 60950 NOTES CE CEMark (LVD) Nominal values apply with sense pins connected and other control pins unconnected. Current Share Accuracy ........ 5% typical Overvoltage Protection .......... 130% nominal Vo Current Limit .......................... 115% Io max Specifications subject to change without notice. 184 USA: 1-888-41-ASTEC Europe (UK): +44(0)1384-842211 Asia (HK): 852-2437-9662 ASIA 6F., CDW Building 382-392 Castle Peak Road Tsuen Wan, N.T., Hong Kong Telephone: 852-2437-9662 Facsimile: 852-2402-4426 EUROPE Astec House, Waterfront Business Park Merry Hill, Dudley West Midlands, DY5 1LX, UK Telephone:+44(0)1384-842211 Facsimile:+44(0)1384-843355 AMERICAS 5810 Van Allen Way Carlsbad, CA 92008 Telephone: 760-930-4600 Facsimile: 760-930-0698 D C D C O R D E R I N G I N F O R M AT I O N Input Voltage Output Voltage Output Current Model Number 48V 48V 48V 48V 48V 3.3V 5V 12V 15V 24V 50A 40A 18A 16A 10A AK80A-048L-033F50 AK80A-048L-050F40 AK80A-048L-120F18 AK80A-048L-150F16 AK80A-048L-240F10 Input Voltage Output Voltage Output Current Model Number 24V 24V 24V 24V 24V 3.3V 5V 12V 15V 24V 40A 30A 14A 12A 8A AK80A-024L-033F40 AK80A-024L-050F30 AK80A-024L-120F14 AK80A-024L-150F12 AK80A-024L-240F08 P O W E R Please contact Astec for information on other output voltages, power ranges and configurations. CONNECTIONS PIN ASSIGNMENTS Input 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). Temperature monitor output (e.g. to fan control circuit) + O/P + I/P 18 to 36V or 36 to 72V 31. +ve 32. -ve 8 5 9 12 2 1 + SENSE Load 3 4 - SENSE - I/P Output Control Pins 21. 22. +ve 23. 24. 26. 27. -ve 28. 29. 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. - O/P AK80A Enable (close to enable) +SENSE Secondary PG/ID side V ADJ controls -SENSE S COM C SHARE CLK OUT Primary CLK IN side ENABLE controls C LIM ADJ TEMP MON PRI AUX Output voltage adjust Current limit adjust DIMENSIONS Connection example THERMAL BASE PLATE* C SHARE CLK OUT 5 8 9 S COM 12.7 (0.50) + O/P 2 1 + SENSE Load 8 PRIMARY SIDE CONTROL PINS 3 4 - SENSE 12 8 OUTPUT PINS ENABLE 4 SECONDARY SIDE CONTROL PINS 2 INPUT PINS - O/P 5 8 S COM 9 12 2 1 + SENSE 32 3 4 - SENSE ENABLE 31 9 12 8 5 Parallel connections 3 4 2 1 29 28 27 26 24 23 22 21 61.0 (2.40) C SHARE CLK IN AMPSSTM POWER MODULE *Must be connected to protective earth 116.8 (4.60) Rev 02.21.00 www.astec.com 185