USA: 1-888-41-ASTEC Europe (UK): +44(0)1384-842211 Asia (HK): 852-2437-9662
184
ELECTRICAL SPECIFICATIONS
Input
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 = 0°C)
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 V oltage
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
NOTES
Nominal values apply with sense pins connected and other control pins
unconnected.
Specifications subject to change without notice.
SPECIAL FEATURES
•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
ENVIRONMENTAL
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)
SAFETY
UL UL 1950 E132002
CSA CSA22.2-234 LR53982C
CSA22.2-950
VDE IEC950 20366-3336-1002 & 1008
EN 60950
CE CEMark (LVD)
AK80A
240 Watts
AK80A Economy Series
Input V oltages
24V, 48V
# of Outputs
Single
Total Power
240 Watts
www.astec.com
AMERICAS
5810 V an Allen Way
Carlsbad, CA 92008
Telephone: 760-930-4600
Facsimile: 760-930-0698
185
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EUROPE
Astec House, Waterfront Business Park
Merry Hill, Dudley
West Midlands, DY5 1LX, UK
Telephone:+44(0)1384-842211
Facsimile:+44(0)1384-843355
ASIA
6F., CDW Building
382-392 Castle Peak Road
Tsuen Wan, N.T., Hong Kong
Telephone: 852-2437-9662
Facsimile: 852-2402-4426
Input Output Control Pins
31. +ve 21. 1. +SENSE
32. –ve 22. 2. PG/ID
23. 3. V ADJ
24. 4. -SENSE
26. 5. S COM
27. 6. C SHARE
28. 7. CLK OUT
29. 8. CLK IN
9. ENABLE
10. C LIM ADJ
11. TEMP MON
12. PRI A UX
Please contact Astec for information on other output voltages, power ranges and configurations.
AK80A
PIN ASSIGNMENTS
+ve
–ve
Secondary
side
controls
Primary
side
controls
ORDERING INFORMATION
Input Output Output Model Number Input Output Output Model Number
Voltage Voltage Current Voltage Voltage Current
Re v 02.21.00
48V 3.3V 50A AK80A-048L-033F50
48V 5V 40A AK80A-048L-050F40
48V 12V 18A AK80A-048L-120F18
48V 15V 16A AK80A-048L-150F16
48V 24V 10A AK80A-048L-240F10
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
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
58
32
31
AMPSS™ POWER MODULE
12.7
(0.50)
34
129
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
81
4
5
3
2
912
8
9
ENABLE
ENABLE
S COM
S COM
Parallel connections
CONNECTIONS
*Must be connected to protective earth
Load
+ SENSE
– SENSE
+ O/P
– O/P
18 to 36V
or
36 to 72V
+ I/P
– I/P
9
81
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
DIMENSIONS
Connection example
