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DC/DC Converters
TMR 2WI Series, 2 Watt
Features
◆ Ultra-wide 4:1 input range
◆ SIP-9 package
◆ Full SMD design
◆ Temperature range –40 to +85°C
◆ High efficiency
◆ Excellent load and line regulation
◆ Indefinite short-circuit protection
◆ I/O isolation 1500 VDC
◆ Remote On/Off control
◆ Fully RoHS compliant
◆ 3-year product warranty
The TMR-2WI series is a new family of isolated 2W dc-dc converter modules with
regulated output, featuring ultra-wide 4:1 input voltage ranges of 9-36 VDC or
18-75 VDC. The product comes in a ultra-compact SIP-9 plastic package.
An excellent efficiency up to 84% allows –40°C to +85°C operation temperatures
at full load. Further features include remote On/Off control and continuous short
circuit protection. Typical applications for these ultra-compact converters are bat-
tery operated equipment and distributed power architectures in communication,
instrumentation and industrial electronics, everywhere where space on the PCB is
critical.
Ordercode Input voltage range Output voltage Output current max. Efficiency typ.
TMR 2-2410WI 3.3 VDC 500 mA 71 %
TMR 2-2411WI 5 VDC 400 mA 76 %
TMR 2-2412WI 12 VDC 165 mA 79 %
TMR 2-2413WI 9 – 36 VDC 15 VDC 135 mA 80 %
TMR 2-2421WI (24 VDC nominal) ±5 VDC ±200 mA 73 %
TMR 2-2422WI ±12 VDC ±85 mA 77 %
TMR 2-2423WI ±15 VDC ±65 mA 79 %
TMR 2-4810WI 3.3 VDC 500 mA 70 %
TMR 2-4811WI 5 VDC 400 mA 72 %
TMR 2-4812WI 12 VDC 165 mA 78 %
TMR 2-4813WI 18 – 75 VDC 15 VDC 135 mA 78 %
TMR 2-4821WI (48 VDC nominal) ±5 VDC ±200 mA 70 %
TMR 2-4822WI ±12 VDC ±85 mA 76 %
TMR 2-4823WI ±15 VDC ±65 mA 76 %
Models
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All specifications valid at nominal input voltage, full load and +25°C after warm-up time unless otherwise stated.
DC/DC Converters
TMR 2WI Series 2 Watt
Input Specifications
Input current at no load (nominal input) 24 Vin models: 20 mA typ.
48 Vin models: 15 mA typ.
Input current at full load (nominal input) 24 Vin models: 110 mA typ.
48 Vin models: 55 mA typ.
Surge voltage (100 msec. max.) 24 Vin models: 50 V max.
48 Vin models: 100 V max.
Reverse voltage protection 0.5 A max.
Input Filter capacitor type
Start up time <1ms (at nominal input and resistive load)
Output Specifications
Voltage set accuracy ±2 %
Regulation – Input variation Vin min. to Vin max. 0.5 % max.
– Load variation 25 – 100 % single output models: 0.75 % max.
dual output models: 2.0 % max. (balanced load)
Minimum load 25 % of rated max current (operation at lower
load condition is safe but a higher output ripple
will be experianced)
Temperature coefficient ±0.1 %/°C
Ripple and noise (20 MHz Bandwidth) 50 mVpk-pk max
Transient response (25 % load step change) 300 µs max.
Short circuit protection constant current (automatic recovery)
Capacitive load 3.3 VDC / 5 VDC models: 2’200 µF max. / 1’000 µF max.
12 VDC / 15VDC models: 170 µF max. / 110 µF max.
±5 VDC / ±12 VDC models: 470 µF max. / 100 µF max. (each output)
±15 VDC models: 47 µF max. (each output)
General Specifications
Temperature ranges – Operating –40°C to +85°C
– Case temperature +90°C max.
– Storage –55°C to +105°C
Derating (convection cooling) 3.3 %/K above 70°C
Humidity (non condensing) 95 % rel. H max.
Reliability, calculated MTBF (MIL-HDBK-217F at +25°C, ground benign) >1 Mio h
Isolation voltage (60 sec.) – Input/Output 1’500 VDC
Isolation capacitance – Input/Output 500 pF max.
Isolation resistance – Input/Output (500 VDC) >1‘000 M Ohm
Switching frequency 100 to 650 kHz (PFM)
Remote On/Off control – On: <0.6 VDC or open circuit
– Off: 2.9 to 15 VDC
– Off stand by input current 1 mA typ / 3 mA max.
Physical Specifications
Casing material non-conductive plastic
Potting material epoxy (UL 94V-0 rated)
Weight 6.5 g (0.23 oz)
Soldering temperature max. 260°C / 10 sec.
Environmental compliance – Reach www.tracopower.com/products/tmr2wi-reach.pdf
– RoHS directive 2002/95/EC
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Jenatschstrasse 1 · CH-8002 Zurich · Switzerland
Tel. +41 43 311 45 11 · Fax +41 43 311 45 45 · info@traco.ch · www.tracopower.com
DC/DC Converters
TMR 2WI Series 2 Watt
Outline Dimensions
Pin Single Dual
1–Vin (GND) –Vin (GND)
2+Vin (Vcc) +Vin (Vcc)
3Remote On/Off Remote On/Off
6+Vout +Vout
7ntc Common
8ntc ntc
9–Vout –Vout
Pin-Out
Re v.07/12
Bottom view
2.75
(0.11)
0.5
(0.02)
0.3
(0.012)
9.3
(0.36)
12
39
678
1.8 7. 62 3 x 2.54
(3 x 0.1)(0.07) (0.3)
2 x 2.54
(2 x 0.1)
26.0
(1.02)
12.5
(0.49)
3.2
(0.13)
Dimensions in [mm], () = Inch
Pin diameter ø 0.5 ±0.05 (0.02 ±0.002)
Tolerances ±0.5 (±0.02)
Pin pitch tolerances ±0.2 (±0.008)
Specifications can be changed any time without notice.
(ntc = not to connect)
Application note: www.tracopower.com/products/tmr2wi-application.pdf
