Isolated and Regulated 20 WATT Modular DC/DC Converters
ASD20 series
INPUT SPECIFICATIONS
GENERAL SPECIFICATIONS
Input Voltage Ranges:
12 VDC Nominal
24 VDC Nominal
PI Type
9-36 VDC
Input-Output Isolation
Isolation Resistance
Switching Frequency
Safety
1500VDC
10-8nth Ohm min.
300Khz
18-72 VDC
Input Filter
UL60950
Remote On/Off Control
Logic Compatibility
EC-On
RFI
Six Sided Shielding
MIL-HDBK-217F
Ground Benign, 25°C
880,584 Hrs.
CMOS or Open Collector TTL
>+5.5VDC or Open Circuit
<1.8VDC
MTBF
EC-Off
Control Common
Ref. to - Input
ENVIRONMENTAL SPECIFICATIONS
OUTPUT SPECIFICATIONS
Oper. Temperature
Derate Above 60°C
Case Temperature
Storage Temperature
-25 to +71°C w. Derate
Voltage and Current
Load Regulation (25% to FL)
Line Regulation
See Selection Chart
+/-0.5%
Linearly to Zero Power +100°C
100°C max.
(HL-LL)
+/-0.5%
-55 to +105°C *
Temperature Coefficient
Ripple/Noise
+/-0.02%/°C
RMS
20mV max.
75mVp-p max.
+/-1%
P-P
PHYSICAL SPECIFICATIONS
Voltage Accuracy
Single O/P
Dual +O/P
Dual -O/P
+/-1%
+/-1%
Case Material
Black coated Copper
w. Non-conductive base
Fully Encapsulated
2 oz, (57g)
+/-2%
Voltage Balance (Dual FL)
Short Circuit Protection
Efficiency
Construction
Weight
Continuous
See Selection Chart
Dimensions
1.6” x 2” x 0.45”
Transient Response
Single 25% Load Change
<500uS
<500uS
Dual Full Load to 1/2 Load
+/-10%
Trim
All specifications are typical at nominal input, full load, and 25°C unless other-
wise noted
Astrodyne products are not authorized or warranteed for use
as critical components in life support systems, equipment used
in hazardous environments, nuclear controls systems, or other
mission-critical applications.
* These are stress ratings. Exposure of the devices to any of these conditions
may adversely affect long term reliability. Proper operation under conditions
other than the standard operating conditions is neither warranteed nor implied.
300 Myles Standish Blvd., Taunton, MA 02780
WWW.ASTRODYNE.COM
Ph: 1-800-823-8082
Fax: 508-823-8181
ASTRODYNE [ ASTRODYNE CORPORATION ]
