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DC/DC Converters
TMR 3WI Series, 3 Watt
Features
◆ Highest power density in SIP package
◆ Ultra wide 4:1 input range
◆ Small footprint: 21.8 x 9.2 mm
◆ Temperature range –40° to +85°C
◆ High efficiency up to 82%
◆ Excellent load and line regulation
◆ Short-circuit protection
◆ I/O isolation 1600 VDC
◆ Remote On/Off control
◆ 3-year product warranty
The TMR-3WI series is a new family of isolated 3W DC/DC converters with regu-
lated output, featuring ultra-wide 4:1 input voltage range. The product comes in a
ultra-compact SIP plastic package with a small footprint occupying only 2.0 cm2
(0.3 square in.) of board space. An excellent efficiency allows –40° to +85°C
operation temperatures.
Further features include remote On/Off control and continuous short circuit protec-
tion. The very compact dimensions of these converters make them an ideal solution
for many space critical applications in battery-powered equipment and instrumen-
tation.
Order code Input voltage Output voltage Output current max. Efficiency typ.
TMR 3-1210WI 3.3 VDC 700 mA 74 %
TMR 3-1211WI 5 VDC 600 mA 78 %
TMR 3-1212WI 12 VDC 250 mA 80 %
TMR 3-1213WI 4.5 – 18 VDC 15 VDC 200 mA 80 %
TMR 3-1221WI (12 VDC nominal) ±5 VDC ±300 mA 80 %
TMR 3-1222WI ±12 VDC ±125 mA 80 %
TMR 3-1223WI ±15 VDC ±100 mA 80 %
TMR 3-2410WI 3.3 VDC 700 mA 75 %
TMR 3-2411WI 5 VDC 600 mA 80 %
TMR 3-2412WI 12 VDC 250 mA 82 %
TMR 3-2413WI 9 – 36 VDC 15 VDC 200 mA 82 %
TMR 3-2421WI (24 VDC nominal) ±5 VDC ±300 mA 79 %
TMR 3-2422WI ±12 VDC ±125 mA 81 %
TMR 3-2423WI ±15 VDC ±100 mA 81 %
TMR 3-4810WI 3.3 VDC 700 mA 74 %
TMR 3-4811WI 5 VDC 600 mA 80 %
TMR 3-4812WI 12 VDC 250 mA 81 %
TMR 3-4813WI 18 – 75 VDC 15 VDC 200 mA 81 %
TMR 3-4821WI (48 VDC nominal) ±5 VDC ±300 mA 79 %
TMR 3-4822WI ±12 VDC ±125 mA 81 %
TMR 3-4823WI ±15 VDC ±100 mA 81 %
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 3WI Series 3 Watt
Input Specifications
Input current at full load 12 Vin models: 340 mA max.
24 Vin models: 170 mA max.
48 Vin models: 85 mA max.
Input current at no load 12 Vin models: 40 mA typ.
24 Vin models: 25 mA typ.
48 Vin models: 15 mA typ.
Surge voltage (100 msec. max.) 12 Vin models: 36 V max.
24 Vin models: 50 V max.
48 Vin models: 100 V max.
Input filter internal capacitor
ESD (electrostatic discharge) EN 61000-4-2, air ±8 kV, contact ±6 kV,
perf. criteria A
Radiated immunity EN 61000-4-3, 10 V/m, perf. criteria A
Fast transient / Surge EN 61000-4-4, ± 2 kV, perf. criteria A
EN 61000-4-5, ± 1 kV perf. criteria A
With external input capacitor e.g. Nippon
chemi-con KY 100 µF, 100 V, ESR 110 mOhm
Conducted immunity EN 61000-4-6, 10 Vrms, perf. criteria A
RF Magnetic Field EN 61000-4-8, 100 A/m, perf. criteria A
Output Specifications
Voltage set accuracy ±1 % max
Regulation – Input variation Vin min. to Vin max. 0.2 % max.
– Load variation 0 – 100% single output models: 1.0 % max.
dual output models: 1.0 % max. balanced load
– Load cross regulation 25/100% 5.0 % max. (dual output models)
Minimum load not required
Temperature coefficient 0.02 %/K
Ripple and noise (20 MHz Bandwidth) 30 mVp-p max.
Start up time – Power On 30 ms typ.
(constant resistive load) – Remote On 30 ms typ.
Transient response setting time (25% load step change) 250 µs typ.
Short circuit protection continuous, automatic recovery
Capacitive load 3.3 VDC models: 3‘300 µF max.
5 VDC models: 1’680 µF max.
12 VDC models: 820 µF max.
15 VDC models: 680 µF max.
±5 VDC models: ±1000 µF max.
±12 VDC models: ±470 µF max.
±15 VDC models: ±330 µF max.
General Specifications
Temperature ranges – Operating –40°C to +85°C
– Case temperature +100°C max.
– Storage –55°C to +125°C
Load derating 3.3 %/K above 70°C
Humidity (non condensing) 5 – 95 % rel. H max.
Reliability, calculated MTBF (MIL-HDBK-217F, at +25°C, ground benign) >3.4 Mio h
Page 3 of 3
Specifications can be changed without notice! Make sure you are using the latest documentation, downloadable at www.tracopower.com
www.tracopower.com
DC/DC Converters
TMR 3WI Series 3 Watt
Outline Dimensions
Pin Single Dual
1–Vin (GND) –Vin (GND)
2+Vin (Vcc) +Vin (Vcc)
3Remote On/Off Remote On/Off
5No con. No con.
6+Vout +Vout
7–Vout Common
8No con. –Vout
Pin-Out
Rev. July 12, 2018
General Specifications
Isolation voltage (60 sec.) – Input/Output 1’600 VDC
Isolation capacitance – Input/Output 200 pF max.
Isolation resistance – Input/Output (500 VDC) >1 GOhm
Switching frequency 100 kHz min. (PFM)
Remote On/Off – On: open or high impedance
– Off: 2...4 mA to applied via 1 kOhm resistor
– Off stand by input current 2.5 mA max.
Vibration and thermal shock MIL-STD-810F
Safety standards UL /cUL 60950-1,
IEC 60950-1:2005 (2nd Edition); +A1:2009
– Certification documents www.tracopower.com/overview/tmr3wi
Environmental compliance – Reach www.tracopower.com/info/reach-declaration.pdf
– RoHS RoHS Directive 2011/65/EU
Altitude – operation < 40’000ft (12’000m)
– non operation < 50’000ft (15’000m)
Physical Specifications
Casing material non-conductive plastic
Potting material silicone, UL 94V-0 rated
Weight 4.8 g ( 0.17oz)
Bottom view
3.2
(0.13)
0.5
(0.02)
0.25
(0.01)
2.54
2.0 2.54
21.8
5.08 2.54
0.5
(0.02)
11.1
(0.44)
(0.1) (0.1) (0.1)
(0.08 (0.2)
4.0
2.54
(0.1)
2.54
(0.1)
(0.86)
(0.16)
9.2
(0.36)
1235678
Dimensions in [mm], () = Inch
Pin dimension tolerances 0.1 (0.004)
Pin pitch tolerances: ±0.25 (±0.01)
Tolerances: ±0.5 (±0.02)
Supporting documents: www.tracopower.com/overview/tmr3wi
Mouser Electronics
Authorized Distributor
Click to View Pricing, Inventory, Delivery & Lifecycle Information:
TRACO Power:
TMR 3-2421WI TMR 3-4811WI TMR 3-2413WI TMR 3-1211WI TMR 3-2411WI TMR 3-2423WI TMR 3-4810WI
TMR 3-2412WI TMR 3-4813WI TMR 3-2410WI TMR 3-4821WI TMR 3-1212WI TMR 3-1221WI TMR 3-1222WI
TMR 3-2422WI TMR 3-1210WI TMR 3-1223WI TMR 3-4823WI TMR 3-4822WI TMR 3-4812WI TMR 3-1213WI
