http://www.tracopower.com
DC/DC Converters
THD 12WI Series, 12 Watt
Features
◆ Highest power density:
12W in DIP 24 package!
◆ Ultra-wide 4:1 input range
◆ Very high efficiency up to 85%
◆ I/O isolation 1500V
◆ Input filter meets EN 55022A without
ext. components
◆ Remote On/Off
◆ Under voltage lock-out circuit
◆ Shielded metal case with insulated
baseplate
◆ Continuous short-circuit protection
◆ Operating temp. range –40°C to +85°C
◆ Lead free design, RoHS compliant
◆ 3-year product warranty The THD-12WI series is a range of high performance, isolated 12W dc/dc converter
modules featuring ultra wide 4:1 input voltage ranges in a DIP-24 package with
industry-standard footprint. Overload and overvoltage protection as well as remote
On/Off are included as standard. Built-in filters for both input and output minimizes
the need of external filtering. Full SMD-design with exclusive use of ceramic capaci-
tors guarantees a high reliability and long product lifetime. Typical applications for
these converters are industrial electronics, instrumentation, data communication sys-
tems and battery operated equipment with limited space available on the PCB.
Order code Input voltage range Output voltage Output current max. Efficiency typ.
THD 12-2410WI 3.3 VDC 3‘500 mA 84 %
THD 12-2411WI 5.1 VDC 2’400 mA 85 %
THD 12-2412WI 12 VDC 1‘000 mA 85 %
THD 12-2413WI 9 – 36 VDC 15 VDC 800 mA 85 %
THD 12-2421WI (24 VDC nominal) ±5 VDC ±1‘200 mA 82 %
THD 12-2422WI ±12 VDC ±500 mA 85 %
THD 12-2423WI ±15 VDC ±400 mA 85 %
THD 12-4810WI 3.3 VDC 3‘500 mA 84 %
THD 12-4811WI 5.1 VDC 2’400 mA 85 %
THD 12-4812WI 12 VDC 1‘000 mA 85 %
THD 12-4813WI 18 – 75 VDC 15 VDC 800 mA 85 %
THD 12-4821WI (48 VDC nominal) ±5 VDC ±1‘200 mA 82 %
THD 12-4822WI ±12 VDC ±500 mA 85 %
THD 12-4823WI ±15 VDC ±400 mA 85 %
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
THD 12WI Series 12 Watt
Input Specifications
Input current (no load) 24 V; 3.3 & 5.1 VDC models: 55 mA
24 V; other models: 15 mA
48 V; 3.3 & 5.1 VDC models: 20 mA
48 V; other models: 7 mA
Input current (full load) 24 Vin models: 610 mA typ.
48 Vin models: 310 mA typ.
Input voltage variation (dv/dt) 5 V / ms, max.
(complies to ETS 300 132 part. 4.4)
Start-up voltage 24 Vin models: 9 VDC (or lower)
48 Vin models: 18 VDC (or lower)
Under voltage shut down (lock-out circuit) 24 Vin models: 8 VDC typ.
48 Vin models: 16 VDC typ.
Surge voltage (100 msec. max.) 24 Vin models: 50 V max.
48 Vin models: 100 V max.
Conducted noise (input) EN 55022 level A, FCC part 15, level A
ESD (input) EN 61000-4-2, Perf. Criteria B
Fast Transient (input) EN 61000-4-4, Perf. Criteria B
Surge (input) EN 61000-4-5, Perf. Criteria B
Output Specifications
Voltage set accuracy ±1.2 %
Regulation – Input variation Vin min. to Vin max. 0.2 % max.
– Load variation 10 – 100 % single output models: 0.5 % max.
dual output models balanced load: 1.0 % max.
dual output models unbalanced load: 5.0 % max.
Transient response setting time (25% load step change) 250 µs
Ripple and noise (20 MHz Bandwidth) 85 mVpk-pk max.
Temperature coefficient ±0.02 %/K
Start up time (nominal Vin and constant resistive load) – at power on 450 ms typ.
– at remote on 5 ms typ.
Output current limitation 150 % typ. of Iout max., constant current
Over-voltage protection (only single output models) 3.3 VDC models: 3.9 VDC
5.1 VDC models: 6.2 VDC
12 VDC models: 15 VDC
15 VDC models: 18 VDC
Short circuit protection indefinite, automatic recovery
Minimum load 10 % of rated max. current (operation at lower
load condition will not damage these converters
however, they may t meet all listed specifications)
Capacitive load 3.3 & 5.1 Vout models: 2000 µF max.
12 Vout models: 430 µF max.
15 Vout models: 300 µF max.
±5 Vout models: ±1250 µF max.
±12 Vout models: ±200 µF max.
±15 Vout models: ±120 µF max.
General Specifications
Temperature ranges – Operating –40°C to +85°C
– Case temperature +105°C max.
– Storage –55°C to +105°C
Derating 3.3 & 5.1 Vout models: 2.2 %/K above 60°C
other models: 2.5 %/K above 65°C
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
THD 12WI Series 12 Watt
General Specifications
Humidity (non condensing) 95 % rel H max.
Reliability, calculated MTBF (MIL-HDBK-217F, at +25°C, ground benign) >2.0 Mio h
Thermal shock MIL–STD–810F
Isolation voltage (60sec.) – Input/Output 1500 VDC
Isolation capacitance – Input/Output 1500 pF max.
Switching frequency 400 kHz typ. (pulse width modulation PWM)
Safety standards UL 60950-1, IEC/EN 60950-1
– Certification documents www.tracopower.com/overview/thd12wi
Remote On/Off – On: 3.0 ... 12 VDC or open circuit (referenced to -Vin)
– Off: 0 ... 1.2 VDC or short circuit pin 1 and pin 2/3
– Off idle current: 2.5 mA
Physical Specifications
Casing material copper, nickel plated
Baseplate material non conductive FR4
Potting material epoxy (UL94V-0 rated)
Weight 18 g (0.62oz)
Soldering temperature max. 265°C / 10 sec.
Outline Dimensions
Pin Single Dual
1Remote On/Off Remote On/Off
2–Vin (GND) –Vin (GND)
3–Vin (GND) –Vin (GND)
9ntc. Common
11 ntc. –Vout
14 +Vout +Vout
16 –Vout Common
22 +Vin (Vcc) +Vin (Vcc)
23 +Vin (Vcc) +Vin (Vcc)
Pin-Out
2.0 (0.08)
25.4 (1.0)
20.3 (0.80)
2.54
(0.10)
31.8
(1.25)
10.2
15.24 (0.60)
9
11
22
23 2
3
16
14
Bottom view
15.24 (0.60)
5.08
2.5
3.8
Insulated Baseplate
(0.10)
(0.15)
(0.20)
(0.40)
1
Dimensions in [mm], () = Inch
Pin diameter ø 0.5 ±0.05 (0.02 ±0.002)
Tolerances ±0.5 (±0.02)
Pin pich tolerances ±0.35 (±0.014)
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Rev. July 11, 2018
Application note: www.tracopower.com/ove r view/thd12 wi
ntc = not to connect
