Technical Reference Note
ASA (6W) Family
ASA (6W) Isolated DC/DC Converter Module
Industry Standard Size, 1.25”x0.8”x0.4”
9-36V/18-75V Inputs, 3.3V/5V/±5V/12V/±12V/15V/±15V Outputs
The ASA (6W) Isolated DC/DC Converter is Astec’s 4:1 wide input voltage family for low power applications. With
efficiency up to 81% typical for 5V module, this product is allowed to work at operating temperature range from -40ºC to
71ºC and a wide input voltage range of 4:1. Single-output models and dual-output models are available for a wide range of
applications in telecommunication, transportation equipment, etc.. Housed in small package, 1.25”x0.8”x0.4”, with industry
standard pinout, 24-pin DIP, ASA family eases the PCB designs and mechanical designs of customers’ end products.
Electrical Parameters
Input
Input range
Efficiency
9-36 VDC; 18-75 VDC
81%@ 5V (Typical)
Output
Regulation
(Line, Load, Temp)
Ripple and noise
Industry Standard Size
1.25”
×0.80” ×
0.40”
<2%
2% typical
(100mV p-p max@ 5V)
Transient Response
6% max deviation with
50% load to full load
250uS (max) recovery
Short Circuit Protection Indefinite
Special Features
•
•
•
•
•
•
•
•
•
Wide 4: 1 input range
High efficiency, 81%@5V
-40°C to 90°C case surface operating temperature
Input / Output isolation 1.5KVdc
Low output ripple and noise
Shielded metal case with size (1.25”x0.8”x0.4”)
Industrial standard pinout (24-pin DIP)
Lead-free soldering pins
Fixed switching frequency (200KHz)
Safety
Designed to meet EN60950 (up to SELV limit)
Environmental Specifications
•
•
•
•
Operating temperature: -40°C to +71°C
Storage temperature: -55°C to +105°C
MTBF: >1 million hours
ROHS Compliant (Rev02 or above)
DATE: February 2006
MODEL : ASA
Series
SHEET 1 / 17
Technical Reference Note
ASA (6W) Family
ASA (6W) SERIES
THIS SPECIFICATION COVERS THE REQUIREMENTS
FOR AN INDUSTRY STANDARD PACKAGE OF 1.25”x0.8”x0.4”, 4:1 INPUT RANGE,
4-6W, SINGLE OUTPUT AND DUAL OUTPUT ISOLATED DC/DC CONVERTER
PART NUMBERS
MODEL NAME / SIS CODE
ASA01F18
ASA01A18
ASA00AA18
ASA00B18
ASA00BB18
ASA00C18
ASA00CC18
ASA01F36
ASA01A36
ASA01AA36
ASA00B36
ASA00BB36
ASA00C36
ASA00CC36
Nominal Vin /
Range of Vin
24V / 9-36V
24V / 9-36V
24V / 9-36V
24V / 9-36V
24V / 9-36V
24V / 9-36V
24V / 9-36V
48V / 18-75V
48V / 18-75V
48V / 18-75V
48V / 18-75V
48V / 18-75V
48V / 18-75V
48V / 18-75V
Vout / Iout
3.3V / 1.2A
5V / 1A
±5V
/
±0.5A
12V / 0.5A
±12V / ±0.25A
15V / 0.4A
±15V
/
±0.2A
3.3V / 1.2A
5V / 1A
±5V
/
±0.5A
12V / 0.5A
±12V
/
±0.25A
15V / 0.4A
±15V
/
±0.2A
DATE : February 2006
MODEL : ASA
Series
SHEET 2 / 17
Technical Reference Note
ASA (6W) Family
ELECTRICAL SPECIFICATIONS
Unless otherwise indicated, specifications apply over all operating input voltage and temperature conditions.
Standard test condition on a single unit.
Tambient :
+Vin :
−Vin
:
+Vout :
−Vout
:
25°C
24V
±2%
(ASAxxxx18)
48V
±2%
(ASAxxxx36)
return pin for +Vin
connect to load
connect to load (return)
ABSOLUTE MAXIMUM RATINGS
Stresses in excess of the absolute maximum ratings can cause permanent damage to the device. These are absolute
stress ratings only. Functional operation of the device is not implied at these or any other conditions in excess of
those given in the operational sections of the IPS. Exposure to absolute maximum ratings for extended periods can
adversely affect device reliability.
Parameter
a) Input Voltage:
Continuous:
Transient (100ms)
Continuous:
Transient (100ms)
b) Operating Temperature
Ambient
Case Surface
c) Storage Temperature
d) Operating Humidity
e) I/O Isolation
(Conditions : 0.5mA for 60
sec)
Input-Output
f) Output Power
Device
ASAxxxx18
ASAxxxx18
ASAxxxx36
ASAxxxx36
All
All
All
Symbol
V
I
V
I, trans
V
I
V
I, trans
Ta
Tc
T
STG
-
Min
0
0
0
0
-40
-40
-55
-
Typ
-
-
-
-
-
-
-
-
Max
36
44
75
88
71
90
105
95
Unit
Vdc
Vdc
Vdc
Vdc
ºC
ºC
ºC
%
All
3.3V
5V / ±5V
12V / ±12V
15V / ±15V
-
Po,max
Po,max
Po,max
Po,max
-
-
-
-
-
-
-
-
-
-
1500
4
5
6
6
Vdc
W
W
W
W
DATE : February 2006
MODEL : ASA
Series
SHEET 3 / 17
Technical Reference Note
ASA (6W) Family
INPUT SPECIFICATIONS
Parameter
a) Operating Input Voltage
Device
ASAxxxx18
ASAxxxx36
3.3V
5V / ±5V
12V / ±12V
15V / ±15V
3.3V
5V / ±5V
12V / ±12V
15V / ±15V
All
Symbol
V
I
V
I
I
I,max
I
I,max
I
I,max
I
I,max
I
I,max
I
I,max
I
I,max
I
I,max
-
Min
9
18
-
-
-
-
-
-
-
-
-
Typ
24
48
-
-
-
-
-
-
-
-
-
Max
36
75
700
800
950
950
350
400
500
500
0.4
Unit
V
DC
V
DC
mA
mA
mA
mA
mA
mA
mA
mA
W
b) Maximum Input Current
ASAxxxx18
(V
I
= 0 to V
I ,max
: Io = Io,max)
ASAxxxx36
(V
I
= 0 to V
I ,max
: Io = Io,max)
c) No Load Input Power
(V
I
= V
I,nom
)
CAUTION: This power module is not internally fused. An input fuse must always be used.
DATE : February 2006
MODEL : ASA
Series
SHEET 4 / 17
Technical Reference Note
ASA (6W) Family
OUTPUT SPECIFICATIONS
Parameter
a) Output Voltage Setpoint
(V
I
= V
I,min
to V
I,max
: Io = I
o,,max
;
T
A
= 25 ºC)
Device
3.3V
5V
12V
15V
±5V
±12V
±15V
All
3.3V
Others
±5V/±12V/
±15V
All
3.3V
5V
12V
15V
3.3V
5V
12V
15V
±5V
±12V
±15V
3.3V
5V
12V
15V
±5V
±12V
±15V
All
Symbol
V
o,set
V
o,set
V
o,set
V
o,set
V
o,set
V
o,set
V
o,set
-
-
-
-
Min
3.23
4.90
11.76
14.70
±4.90
±11.76
±14.70
-
-
-
-
Typ
3.30
5.00
12.00
15.00
±5.00
±12.00
±15.00
-
-
-
-
Max
3.37
5.10
12.24
15.30
±5.10
±12.24
±15.30
0.5
1
0.5
3
Unit
V
dc
V
dc
V
dc
V
dc
V
dc
V
dc
V
dc
%
%
%
%
b) Output Regulation:
Line (V
I
= V
I,max
toV
I,min
; Io = I
o,,max
)
Load (V
I
= V
I,,nom
; Io = I
o,min
to I
o,max
)
Cross (V
I
= V
I,,nom
; Io = +I
o,max,
-I
o,min
or +I
o,min,
-I
o,max
to +I
o,max,
-I
o,max
)
Temperature
(Tc = -40 ºC to +90ºC)
c) Output Ripple and Noise
(Across 1µF @50V, X7R ceramic capacitor
& 10µF @25V tantalum capacitor)
See Figure 1.
-
-
-
-
-
Io
Io
Io
Io
Io
Io
Io
-
-
-
-
-
-
-
-
-
-
-
-
-
120
100
50
40
±50
±25
±20
-
-
-
-
-
-
-
190
-
-
-
-
-
-
-
-
-
-
-
-
78
81
82
83
81
82
83
200
1.0
100
100
120
150
1200
1000
500
400
±500
±250
±200
-
-
-
-
-
-
-
210
%Vo
mVp-p
mVp-p
mVp-p
mVp-p
mA
mA
mA
mA
mA
mA
mA
%
%
%
%
%
%
%
KHz
Peak-to-Peak (5 Hz to 20 MHz)
d) Rated Output Current
Single Output
Dual Output
e) Efficiency
(V
I
= V
I,nom
; I
o,max
; T
A
= 25°C)
f) Switching Frequency
DATE : February 2006
MODEL : ASA
Series
SHEET 5 / 17
