north america (usa): 1-888-41-astec europe (uk): 44 (1384) 842-211 asia (hk): 852-2437-9662 52 special features electrical specs 240 watts ak80a ? 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 operating temperature (baseplate): 0c to +85c storage temperature: -40c to +105c overtemperature protection: 90c typical mtbf: > 1 million hours (50c baseplate) ul ul 1950 e132002 csa csa22.2-234 lr53982c csa22.2-950 vde iec950 20366-3336-1002 & 1008 en 60950 ce cemark (lvd) input input range 18 to 36 vdc efficiency 83% typical (5v @ 40a); 87% typical (12v @ 18a); 87% typical (15v @ 16a) output 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 transient response 10% typical deviation with 300s recovery (25-75% full load) current share accuracy 5% typical overvoltage protection 130% nominal vo current limit 115% io max 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) notes nominal values apply with sense pins connected and other control pins unconnected. specifications subject to change without notice. environmental total power: 240 watts input voltages: 24v no. of outputs: single safety astec integrated power
e e u u r r o o p p e e astec house, waterfront business park merry hill, dudley west midlands, dy5 1lx, uk telephone: 44 (1384) 842-211 facsimile: 44 (1384) 843-355 a a m m e e r r i i c c a a s s 5810 van allen way carlsbad, ca 92008 telephone: 760-930-4600 facsimile: 760-930-0698 53 ordering information www.astec.com asia 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 input output output model number voltage voltage current 24v 3.3v 40a ak80a-024l-033f40 24v 5v 30a ak80a-024l-050f30 24v 12v 14a ak80a-024l-120f14 24v 15v 12a ak80a-024l-150f12 24v 24v 8a AK80A-024L-240F08 please contact astec for information on other output voltages, power ranges and configurations. input output control pins 31. +ve 21. +ve 1. +sense 32. Cve 22. +ve 2. pg/id 23. +ve 3. v adj 24. +ve 4. -sense 26. -ve 5. s com 27. -ve 6. c share 28. -ve 7. clk out 29. -ve 8. clk in 9. enable 10. c lim adj 11. temp mon 12. pri aux pin assignments secondary side controls primary side controls ak80a astec integrated power thermal base plate * 2 input pins 4 secondary side control pins 8 output pins 116.8 (4.60) 61.0 (2.40) 29 21 28 27 26 24 23 22 21 5 8 32 31 ampss power module 12.7 (0.50) 34 12 9 8 primary side control pins load + sense sense c share 1 4 + sense sense c share clk out 5 clk in + o/p o/p 3 2 12 8 1 4 5 3 2 912 8 9 enable enable s com s com load + sense sense + o/p o/p 18 to 36v or 36 to 72v + i/p i/p 9 8 1 4 current limit adjust output voltage adjust enable (close to enable) temperature monitor output (e.g. to fan control circuit) 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). 3 2 12 5
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