Datasheet TAM25-4812, TAM25-4812B, TAM25-4811B, TAM25-4811, TAM25-2431 Datasheet (TRACO)

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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/DC­converters 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. +85°C)
at full load.

Or de rcod e 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 +85°C

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 +25°C 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 µF max.

dual output models: 250 µF max.

triple output models: 100 µF 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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All specifications valid at nominal input voltage, full load and +25°C 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 1µF and 10 µF,
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%

TAM25

+Out2

+Out1

1µF

to

10µF

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

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Specifications can be changed without notice

Outline Dimensions mm (inches)

Jenatschstrasse 1 • CH-8002 Zurich • Switzerland
Tel. [phone] • Fax [phone] • e-mail: [e-mail] • 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-V ersion

Pin-Out

Pin Triple B-Version B–Version

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

10.210.16 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

10.1610.2

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 ø 1 mm (0.04)

Pin ø 1 mm (0.04)