AK80A ASTEC | Alldatasheet

Document overview

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Technical content

240 Watts

  • High efficiency - up to 87%
  • 500 KHz fixed frequency
  • 85°C 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): 0°C to +85°C Storage temperature: -40°C to +105°C Overtemperature protection: 90°C typical MTBF: > 1 million hours (50°C 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; 87% typical @ 12V; 87% typical @ 15V 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 300µs 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 = 0°C) 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 America’s (USA): 1-888-41-ASTEC Europe (UK): 44 (1384) 842-211 Asia (HK): 852-2437-966252 W9959_02_DCDC_001-073_73 2/8/02 3:55 PM Page 52

Astec House, Waterfront Business Park Merry Hill, Dudley West Midlands, DY5 1LX, UK Telephone: 44 (1384) 842-211 Facsimile: 44 (1384) 843-355 AMERICAS

5810 Van Allen Way

Carlsbad, CA 92008 Telephone: 760-930-4600 Facsimile: 760-930-0698

Ordering Information

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. –ve 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 AK80AAstec Integrated Power THERMAL BASE PLATE*

2 INPUT PINS

4 SECONDARY SIDE

8 OUTPUT PINS

116.8 (4.60) 61.0 (2.40) AMPSS™ POWER MODULE 12.7 (0.50) 34129

8 PRIMARY SIDE

+ SENSE – SENSE C SHARE + SENSE – SENSE C SHARE CLK OUT CLK IN + O/P – O/P 8 1 91 2 ENABLE ENABLE S COM S COM Load + SENSE – SENSE + O/P – O/P 18 to 36V or 36 to 72V + I/P – I/P 8 1 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). 53www.astec.com W9959_02_DCDC_001-073_73 2/8/02 3:55 PM Page 53