P
POLYTRON DEVICES, Inc.
3 WATT
SINGLE & DUAL OUTPUT
24-Pin DIP Package
DC/DC Converters
Specifications
FEATURES
• 4:1 Wide Input Range
• 500 Vdc Input/
Output Isolation
• Efficiency to
72% @ FL
• Short Circuit
Protection
• Industry Standard
Package and Pinout
• No External
Components
All specifications are typical at nominal input, full load, and 25˚C ,
unless otherwise noted.
INPUT
Input Voltages............................................................ Voltage Range
24 Vdc....................................................................9 - 36 Vdc
48 Vdc..................................................................18 - 72 Vdc
Input Filter .........................................................................Pi Network
OUTPUT
Voltage Accuracy.................................................................±4% max.
Line Regulation...................................................................+1% max.
Load Regulation.........................................................+Vdc +1% max.
......................................................-Vdc +2.5% max.
Ripple Noise (20MHz Bw).........................................150mV p-p max.
Temperature Coefficient (at FL).................................+0.02%/˚C max.
Short Circuit Protection.......................................................Fold Back
GENERAL
Efficiency..........................................................Up to 72% (See table)
Isolation Voltage.............................................................500 Vdc min.
Isolation Resistance.......................................................1000MOhms
Switching Frequency........................................................50KHz min.
ENVIRONMENTAL
Operating Temperature Range.......................................-20˚ to +71˚C
Storage Temperature Range........................................-40˚ to +105˚C
Derating .....................................................................................None
Cooling................................................................Free Air Convection
Humidity................................................20-95% RH Non-Condensing
PHYSICAL
Case Material.......................................Non-Conductive Black Plastic
Weight ...................................................................0.8 oz. (22 grams)
Dimensions.........................................................1.25” x 0.80” x 0.50”
TWB3 Series
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
21
3 Watt Single & Dual Output DC/DC Converters
Selection Guide
SINGLE OUTPUT VOLTAGE
Input Voltage
Nominal (Range)
(Vdc)
12 (9-36)
Output
Voltage
(Vdc)
5
12
15
5
12
15
±5
±12
±15
±5
±12
±15
Output
Current
(mA)
500
250
200
500
250
200
±250
±125
±100
±250
±125
±100
Model Number
%
Efficiency
62
62
65
70
70
70
63
64
64
61
68
72
Case
TWB3 Series
(Continued)
24 (18-72)
TWB3-24S5
TWB3-24S12
TWB3-24S15
TWB3-48S5
TWB3-48S12
TWB3-48S15
TWB3-24-5
TWB3-24-12
TWB3-24-15
TWB3-48-5
TWB3-48-12
TWB3-48-15
B
B
B
B
B
B
B
B
B
B
B
B
DUAL OUTPUTS
12 (9-36)
24 (18-72)
Mechanical Specifications
I/O Connections
Pin
1
2
3
10
11
12
13
14
15
22
23
24
SINGLE
+Vin
NC
NC
-Vout
+Vout
-Vin
-Vin
+Vout
-Vout
NC
NC
+Vin
DUAL
+Vin
-Vout
Common
Common
+Vout
-Vin
-Vin
+Vout
Common
Common
-Vout
+Vin
0.08
(2.03)
0.02
(0.51)
CASE B
24
23
22
1
2
3
BOTTOM
VIEW
15
14
13
10
11
12
1.25
(31.75)
0.10
(2.54)
0.60
(15.24)
0.80
(20.30)
0.15
(3.81)
0.50
(12.60)
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
22
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