AK45C
100 Watts
HighEfficiency
AK45C
Quarter-Size Industry Standard
Total Power
Input Voltages
# of Outputs
100 Watts
48V
Single
Quarter Size
S P E C I A L F E AT U R E S
•
•
High efficiency
-40°C to +100°C Baseplate
operating temperature
(with no derating)
Industry standard package
1.45" x 2.28" x 0.5"
High capacitive load limit on start-up
Remote sense compensation
Basic insulation
Regulation to zero load
Fixed frequency switching (375kHz)
E L E C T R I C A L S P E C I F I C AT I O N S
Input
Input Range ........................... 36 to 75 VDC
Input Surge ............................ 100V /100ms
Efficiency ............................... 86% @5Vo Typ
86%@3.3Vo Typ
..............................................
84%@2.5Vo Typ
•
•
•
•
•
•
Control
Voltage Adjust ....................... 80 to 110% Vo
Enable ................................... TTL compatible
.............................................. (positive & negative enable options)
Output
E N V I R O N M E N TA L
Operating case temperature range:
-40°C to +100°C
Storage temperature: -55°C to +105°C
Overtemperature protection: 110°C typical
MTBF: > 1 million hours
Load Regulation .................... 0.2% typical down to no load
..............................................
(output 5V and above)
..............................................
10mV typical down to no load
..............................................
(output below 5V)
Line Regulation ..................... 0.1% typical
..............................................
(output 5V and above)
..............................................
10mV typical
..............................................
(output below 5V)
Voltage Tolerance ..................
±1%
Noise/Ripple .......................... 100mV max typ
Remote sense ....................... Up to 0.5V
Transient Response .............. 5% max deviation with 25% to 75% full
..............................................
(output 5V and above)
..............................................
200mV (output below 5V)
..............................................
500µs (max) recovery
Overvoltage Protection .......... 130% nominal output
..............................................
(output 5V and above)
..............................................
160% nominal output
..............................................
(1.8V and 2V)
..............................................
140% nominal output
..............................................
(3.3V output)
Current Limit .......................... 115% nominal output
Switching Frequency ............. 375kHz (typ)
SAFETY
UL
UL 1950
CSA22.2-950
EN60950
TUV
NOTES
Nominal values apply with sense pins connected to+Vout
and Ground Return with other control pins unconnected.
Specifications subject to change without notice.
168
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
O R D E R I N G I N F O R M AT I O N
Input
Voltage
Output
Voltage
Output
Current
Efficiency
Model Number
D
C
D
C
P
O
W
E
R
48V
1.5V
20A
81%
AK45C-048L-015F20H
48V
2.5V
20A
84%
AK45C-048L-025F20H
48V
3.3V
20A
86%
AK45C-048L-033F20H
48V
5V
20A
86%
AK45C-048L-050F20H
48V
12V
8A
87%
AK45C-048L-120F08H
NOTES:
Enable Function
"N" = negative logic enable (without "N" = positive enable)
DIMENSIONS
.50
[12.7]
PIN ASSIGNMENTS
AK45C High Efficiency
Single Output
1.
2.
3.
4.
5.
6.
7.
8.
-Vin
Enable (on/off)
+Vin
Rtn
- Sense
Trim
+ Sense
+V Out
.20 MIN./.24 MAX.
[5.0]
[6.1]
.20
[5.08]
2.30
[58.4]
1.900
[48.26]
.175+/-.02
[4.4]
.425+/-.02
[10.8]
1
.600
[15.24]
.300
[7.62]
2
3
C
L
4
5
6
7
8
1.100
[27.94]
1.45
[36.8]
Note: Pins 4 & 8 are .062" dia.
All other pins are .040" dia.
Mounting Inserts
M3 X .5 (4 places)
.15
[3.8]
2.000
[50.8]
BOTTOM VIEW
Rev 02.21.00
www.astec.com
169
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