P
POLYTRON DEVICES, Inc.
20 WATT
SINGLE, DUAL & TRIPLE
OUTPUT
Regulated, Wide Input (2:1 + 4:1)
DC/DC Converters
Specifications
FEATURES
• 2:1, 4:1 Wide Input
Voltage Range
• 3.3Vdc Outputs
• Low Profile Package
(2.0” x 1.6” x 0.40”)
• High Efficiency
• Short Circuit & Over-
Voltage Protection
• Six-Sided Shielding
• Epoxy Encapsulated
• Single, Dual, Triple
Output
MWA20, MWB20 Series
All specifications are typical at nominal input, full load, and 25˚C ,
unless otherwise noted.
INPUT
Input Voltages.............................................................Voltage Range
12 Vdc......................................................................9-18 Vdc
24 Vdc....................................................................18-36 Vdc
48 Vdc...................................................................36-72 Vdc
Input Filter..........................................................................Pi Network
OUTPUT
Voltage Accuracy.................................................................+2% max.
External Trim Adjustment Range........................................+10% min.
Line Regulation ........................................................................±0.1%
Load Regulation...................................+1.0% (Single), +5.0% (Dual)
Ripple Noise (20 MHz BW).........................................75mV p-p max.
Temperature Coefficient (at FL).........................................+0.02%/°C
REMOTE ON/OFF CONTROL
On Control..............................................................4.8V min. or Open
Off Control................................................................4V max. or Short
GENERAL
Efficiency...............................................................81-83%, see Table
Isolation Voltage...........................................................1600 Vdc min.
Isolation Resistance.......................................................1000MOhms
Switching Frequency.......................................................300KHz typ.
Short Circuit Protection.....................................................Continuous
ENVIRONMENTAL
Operating Temperature Range........................................-25 to +71°C
Storage Temperature Range.........................................-55 to +105°C
Cooling ................................................................Free Air Convection
EMI/RFI.................................................Six-Sided Continuous Shield
PHYSICAL
Case Material...................................................Nickel Coated Copper
with Non-Conductive Base
Dimensions.........................................................2.00" x 1.60" x 0.40"
(50.8 x 40.6 x 10.2 mm)
P.O. Box 398, Paterson, New Jersey 07544 U.S.A.
Tel: (973)345-5885 Fax: (973)345-1264 • Email: sales@polytrondevices.com • www.polytrondevices.com
56
15 Watt Single & Dual Output DC/DC Converters
Mechanical Specifications
MWA20 Series
(Continued)
I/O Connections
Pin
1
2
3
4
5
6
7
8
SINGLE
+Vin
-Vin
No Pin
On/Off
No Pin
+Vout
Common
Trim
DUAL
+Vin
-Vin
No Pin
On/Off
+Vout
Common
-Vout
Trim
TRIPLE
+Vin
-Vin
No Pin
Ctrl
+Aux Out
+5V/+3.3V
-Vout
Trim
1.60 (40.60)
0.70
0.60
(17.80)
(15.20)
0.40(10.20)
0.20(5.10)
4
3
2
1
DIA
0.04
(1.00)
1.80
(45.70)
0.40
(10.20)
2.00
(50.80)
BOTTOM
VIEW
8
0.40
(10.20)
7
6
5
0.40 (10.20)
0.22 MIN
(5.60)
0.70
(17.80)
0.50 (12.70)
All Dimensions are in inches (mm)
P
POLYTRON DEVICES, Inc.
P.O. Box 398, Paterson, New Jersey 07544 U.S.A.
Tel: (973)345-5885 Fax: (973)345-1264 • Email: sales@polytrondevices.com • www.polytrondevices.com
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