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Page 1
Features
DC/DC Converter
TAM 25 Series 25 Watt
Models
Single-, Dual-, and Triple Output Models
Wide 2:1 Input Range
Very high Efficiency up to 84%
Extended Temp. Range available
Internal Filter to meet EN 55022, Class A
and FCC Part 15, Level A
I/O-Isolation 500VDC (1'500VDC for Triple
Output Models)
Small Dimensions: Single- and
Dual Output Models: 50x50x10.5mm,
Triple Output Models: 71x61x10.5mm
Remote ON/OFF
Shielded Metal Case
2 Year Product Warranty
The TAM series is a range of high performance 25W DC/DC-
converters with very high power density. They provide a cost effective
solution in industrial, datacommunication and telecom applications
with limited space on PCB. These converters are built in SMT-hybrid
technology on a ceramic substrate which together with a metal
case provide a very good heat dissipation. No additional heatsink
is necessary for operating temperature up to +75 C (resp. +85C)
at full load.
Ordercode
Input voltage range
Output 1
Output 2
Output 3
Efficiency typ.
TAM 25-1211
9.5 18VDC
5 VDC / 4.4 A
75%
TAM 25-2411
5 VDC / 5
A
82 %
TAM 25-2412
12 VDC / 2
A
83 %
TAM 25-2421
18 36 VDC
+12 VDC / 1
A
12 VDC/ 1 A
83 %
TAM 25-2422
+15 VDC / 0.83 A
15 VDC/ 0.83 A
83 %
TAM 25-4811
5 VDC / 5
A
82 %
TAM 25-4812
12 VDC / 2
A
83 %
TAM 25-4821
36 72 VDC
+12 VDC / 1
A
12 VDC/ 1 A
83 %
TAM 25-4822
+15 VDC / 0.83 A
15 VDC/ 0.83 A
83 %
Models with extended Temp. Range 25 to +85C
TAM 25-2411-B
5 VDC / 5
A
83 %
TAM 25-2412-B
12 VDC / 2.5 A
84 %
TAM 25-2431
18 36 VDC
5 VDC / 3.8 A
+12 VDC/ 0.25 A
12 VDC/ 0.25 A
84 %
TAM 25-2432
5 VDC / 3.1 A
+15 VDC/ 0.31 A
15 VDC/ 0.31 A
84 %
TAM 25-4811-B
5 VDC / 5
A
83 %
TAM 25-4812-B
12 VDC / 2.5 A
84 %
TAM 25-4831
36 72 VDC
5 VDC / 3.8 A
+12 VDC/ 0.25 A
12 VDC/ 0.25 A
84 %
TAM 25-4832
5 VDC / 3.1 A
+15 VDC/ 0.31 A
15 VDC/ 0.31 A
84 %
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All specifications valid at nominal input voltage, full load and +25C after warm-up time unless otherwise stated.
Input Specifications
Input current (no load)
12 Vin models
35 mA typ.
24 Vin models
30 mA typ.
48 Vin models
20 mA typ.
Input current (full load)
12 Vin models
3'000 mA typ.
24 Vin;
5 Vout models:
1'270 mA typ.
24 Vin;
12 & 12 Vout models:
1'210 mA typ.
24 Vin;
other output models:
1'250 mA typ.
48 Vin;
5 Vout models:
635 mA typ.
48 Vin;
12 & 12 Vout models:
605 mA typ.
48 Vin;
other output models:
625 mA typ.
Surge voltage (only triple- and B- version models)
24 Vin models:
39 VDC max.. (1 sec. max.)
48 Vin models:
75 VDC max. (1 sec. max.)
Conducted noise (input)
EN 55022 level A, FCC part 15, level A
Output Specifications
Voltage set accuracy
main output
1.0 %
auxilary outputs
dual:
1.5 %
triple:
4.0 %
Output voltage adjustment
+ 5 % / 20%
Regulation
Input variation Vin min. to Vin max.
single- and triple output models
0.5 % max.
dual output models
1.0 % max.
Load variation 10 100 %:
single output models
1.0 % max.
dual output models ( balanced load )
2.0 % max.
triple output models
Out 1:
1.0 % max.
Out 2 & 3:
3.0 % max. (> 10% load at Out 1)
Cross regulation
3.0 % max.
Ripple and noise (20 MHz Bandwidth)
120 mVpk-pk max
Temperature coefficient
0.02 % / C
Output current limitation
105% 130% of Iout max. foldback mode
Short circuit protection
foldback, indefinite (automatic recovery)
Capacitive load (at min load)
single output models:
500 F max.
dual output models:
250 F max.
triple output models:
100 F max.
General Specifications
Temperature ranges Operating
standard:
25 C ... + 75 C (no derating)
extended:
25 C ... + 85 C (no derating)
Case temperature
standard:
+ 95 C max.
extended:
+ 115 C max.
Storage
55 C ... + 125 C
Humidity (non condensing)
95 % rel H max.
Reliability, calculated MTBF (MIL-HDBK-217 E)
> 400'000 h @ + 25 C
Isolation voltage
Input/Output
single- & dual output models:
500 VDC
triple output- and B- version models:
1`500 VDC
Isolation capacity
Input/Output
10 nF typ
DC/DC Converter
TAM 25 Series 25 Watt
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Page 3
All specifications valid at nominal input voltage, full load and +25C after warm-up time unless otherwise stated.
Reduction of conducted Noise with external Capacitor
In order to meet conducted emissions EN55022-A and EN55011-A a capacitor at the input side of triple output models
and B-version models has to be installed.
Note:
C1 = Electrolytic capacitor low ESR type or
MLCC Cap for SMD (TCCR or THCR type from
Nippon Chemi-Con)
The value of C1 is between 1
F and 10
F,
depending on the load
For 24V input models use 50V capacitor.
For 48V input models use 100V capacitor.
General Specifications
Isolation resistance
Input/Output (500 VDC)
> 100 M Ohm
Switching frequency (fixed)
300 kHz typ. (Pulse width modulation PWM)
Remote ON/OFF (optional):
ON:
2.5 ... 5.5 VDC or open circuit.
OFF:
0 ... 1 VDC or short circuit pin 1 and Vin
Physical Specifications
Case material
single- & dual output models:
black coated metal with insulated baseplate
triple output- and B- version models:
Aluminum anodized
Soldering temperature
max. 260 C / 10 sec.
Output Voltage Adjustment
Single Output
Dual Output
Triple Output
DC/DC Converter
TAM 25 Series 25 Watt
Output voltage adjustment range: +5% to 20%
TA
M
2
5
+Out2
+Out1
1
F
to
10
F
C1
Case
Vin
Cext
+Vin
+Vin
Out3
Com
Vin
Load
CW
100K
Pot.
CCW
CW
100K
Pot.
CCW
CW
100K
Pot.
CCW
Vout
Trim
+Vout
Common
Trim
Vout
Common
Trim
+Vout 1
Page 4
Specifications can be changed without notice
Outline Dimensions mm (inches)
Jenatschstrasse 1
CH-8002 Zurich
Switzerland
Tel. +41-1284 2911
Fax +41-1201 1168
e-mail: sales@traco.ch
internet: http://www.tracopower.com
Pin-Out
Pin
Single
Dual
1
Remote on/off
Remote on/off
2
+Vin (Vcc)
+Vin (Vcc)
3
Vin (GND)
Vin (GND)
4
Trim
Trim
5
Vout
Vout
6
+Vout
Common
7
No pin
+Vout
Rev. 12/00
DC/DC Converter
TAM 25 Series 25 Watt
Single- and Dual Output
Models
Triple Output Models
and B-Version
Pin-Out
Pin
Triple
B-Version
BVersion
24VDC
48VDC
1
Remote on/off
Remote on/off
Remote on/off
2
Case
Case
Case
3
+Vin (Vcc)
Vin (GND)
+Vin (Vcc)
4
Vin (GND)
+Vin (Vcc)
Vin (GND)
5
C ext.
Cext.
C ext.
6
Vout 3
No function
No function
7
+Vout 2
No function
No function
8
Common
Vout
Vout
9
+Vout 1
+Vout
+Vout
10
Trim
Trim
Trim
Weight: 55g (0.12lb)
Weight: 60g (0.13lb)
6 12.7
10.7
0.3
10.16 10.16 10.16 10.16
50.8
10.2
10.16
10.16
10.16
5.08
50.8
12.7
5
6
7
1
2
3
4
Bottom
view
45.72
10.16
71
0.3
61
0.3
5
4
3
2
1
6
7
8
9
10
Bottom view
63.5
0.3
10.2
10.16 10.16 10.16
10.16
10.2
3.75
3.5
(0.4)
(0.42
0.01
)
(2.0)
(2.4
0.01
)
(0.24)
(2.0)
(0.4)
(2.8
0.01
)
(0.5)
(0.14)
(0.4)
(0.4)
(0.4)
(0.4) (0.4) (0.4) (0.4)
(0.4) (0.4) (0.4) (0.4) (0.4)
(0.4)
(0.2)
(0.5)
(2.5
0.01
)
(0.15)
(1.8)
Pin 1 mm (0.04)
Pin 1 mm (0.04)
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