P
POLYTRON DEVICES, Inc.
2.5-3 WATT
SINGLE & DUAL OUTPUT
Isolated (1500Vdc), Wide Input (2:1 + 4:1)
DC/DC Converters
Specifications
FEATURES
• 2:1 + 4:1 Input Voltage
• 1500 Vrms Input/
Output Isolation
• Input Pi Filter
• Short Circuit
Protection
• Epoxy Encapsulated
• Wide Input Voltage
• Single & Dual Output
All specifications are typical at nominal input, full load, and 25˚C ,
unless otherwise noted.
INPUT
Voltages Range...................................................................See Chart
OUTPUT
Voltage Accuracy.................................................................+4% max.
Line Regulation (At FL)....................................................... +1% max.
Load Regulation (FL to 1/4 Load)..................................... + 1% max.
Ripple Noise (20MHz Bw)..............................................1% P-P max.
Temperature Coefficient (at FL).....................................+0.2%/˚C
Short Circuit Protection..............................................Power Foldback
GENERAL
Efficiency (at FL)........................................................ 55-65% Typical
Isolation Voltage.........................................................1500 Vrms min.
Isolation Resistance.......................................................1000MOhms
Switching Frequency........................................................25KHz min.
ENVIRONMENTAL
Operating Temperature Range.......................................-20˚ to +71˚C
Storage Temperature Range........................................-40˚ to +105˚C
Derating .................................................................................... None
Cooling................................................................Free Air Convection
Relative Humidity................................................................Up to 95%
PHYSICAL
Case Material.......................................Non-Conductive Black Plastic
Weight.................................................................0.5 oz. (14.2 grams)
Dimensions.........................................................1.25” x 0.80” x 0.50”
...............................(31.75 x 20.3 x 12.7 mm
TWA2.5/CB, TWB2.5/CB,TWA3/CB,
TWB3/CB 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
18
2.5-3 Watt Single + Dual Output DC/DC Converters
2:1 INPUT + 4:1 INPUT
TWA2.5CB, TWB2.5CB TWA3CB, TWB3CB Series
Selection Guide
Input Voltage
Nominal (Range)
(Vdc)
Output
Voltage
(Vdc)
5
5 (4.5-6)
12
15
5
12 (9-18)
12
15
5
24 (18-36)
12
15
5
48 (36-72)
12
15
±5
Output
Current
(mA, Max)
500
250
200
500
250
200
500
250
200
500
250
200
±250
±125
±100
±250
±125
±100
±250
±125
±100
±250
±125
±100
500
250
200
500
250
200
±250
±125
±100
±250
±125
±100
Input Current (mA)
No Load
75
75
75
25
25
25
15
15
15
15
15
15
90
80
80
40
40
40
20
20
20
15
15
15
80
90
90
50
50
50
80
90
90
50
50
50
Full Load
860
1000
970
347
385
373
180
202
192
90
104
96
780
890
880
315
355
350
150
170
160
75
85
85
340
385
385
160
180
180
330
385
385
170
180
180
TWA2.5-5S5-CB
TWA3-5S12-CB
TWA3-5S15-CB
TWA2.5-12S5-CB
TWA3-12S12-CB
TWA3-12S15-CB
TWA2.5-24S5-CB
TWA3-24S12-CB
TWA3-24S15-CB
TWA2.5-48S5-CB
TWA3-48S12-CB
TWA3-48S15-CB
TWA3-5-5-CB
TWA3-5-12-CB
TWA3-5-15-CB
TWA2.5-12-5-CB
TWA3-12-12-CB
TWA3-12S15-CB
TWA2.5-24-5-CB
TWA3-24-12-CB
TWA3-24-15-CB
TWA2.5-48-5-CB
TWA3-48-12-CB
TWA3-48-15-CB
TWB2.5-24S5-CB
TWB3-24S12-CB
TWB3-24S15-CB
TWB2.5-48S5-CB
TWB3-48S12-CB
TWB3-48S15-CB
TWB2.5-24-5-CB
TWB3-24-12-CB
TWB3-24-15-CB
TWB2.5-48S5-CB
TWB3-48-12-CB
TWB3-48-15-CB
Model Number
(Continued)
Case
SINGLE OUTPUT VOLTAGE
CB
CB
CB
CB
CB
CB
CB
CB
CB
CB
CB
CB
CB
CB
CB
CB
CB
CB
CB
CB
CB
CB
CB
CB
CB
CB
CB
CB
CB
CB
CB
CB
CB
CB
CB
CB
2:1 INPUT
DUAL OUTPUT VOLTAGE
5 (4.5-6)
±12
±15
±5
2:1 INPUT
12 (9-18)
±12
±15
±5
24 (18-36)
±12
±15
±5
48 (36-72)
±12
±15
5
12
15
5
12
15
±5
±12
±15
±5
±12
±15
DUAL OUTPUT SINGLE OUTPUT
4:1 INPUT
24 (9-36)
48 (20-72)
4:1 INPUT
24 (9-36)
48 (20-72)
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
19
2.5-3 Watt Single + Dual Output DC/DC Converters
2:1 INPUT + 4:1 INPUT
TWA2.5CB, TWB2.5CB TWA3CB, TWB3CB Series
Mechanical Specifications
I/O Connections
FUNCTION
+ Vin
- Vin
+ Vout
Common
-Vout
SINGLE
22 & 23
2&3
14
NC
16
DUAL
22 & 23
2&3
14
9 & 16
11
0.15
(3.81)
0.16
(4.06)
0.02
(0.51)
23
22
2
3
0.70
1.25 (17.78)
(31.75)
0.10
(2.54)
BOTTOM
VIEW
16
15
14
9
10
11
0.60
(15.24)
0.80
(20.30)
0.02
(0.50)
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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