DC/DC Converters
THD 12WI Series, 12 Watt
Features
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Highest power density:
12W in DIP 24 package!
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Ultra-wide 4:1 input range
Very high efficiency up to 85%
I/O isolation 1500V
Input filter meets EN 55022A without
ext. components
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Remote On/Off
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Under voltage lock-out circuit
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Shielded metal case with insulated
baseplate
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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.
Models
Order code
THD 12-2410WI
THD 12-2411WI
THD 12-2412WI
THD 12-2413WI
THD 12-2421WI
THD 12-2422WI
THD 12-2423WI
THD 12-4810WI
THD 12-4811WI
THD 12-4812WI
THD 12-4813WI
THD 12-4821WI
THD 12-4822WI
THD 12-4823WI
18 – 75 VDC
(48 VDC nominal)
9 – 36 VDC
(24 VDC nominal)
Input voltage range
Output voltage
3.3 VDC
5.1 VDC
12 VDC
15 VDC
±5 VDC
±12 VDC
±15 VDC
3.3 VDC
5.1 VDC
12 VDC
15 VDC
±5 VDC
±12 VDC
±15 VDC
Output current max.
3‘500 mA
2’400 mA
1‘000 mA
800 mA
±1‘200 mA
±500 mA
±400 mA
3‘500 mA
2’400 mA
1‘000 mA
800 mA
±1‘200 mA
±500 mA
±400 mA
Efficiency typ.
84 %
85 %
85 %
85 %
82 %
85 %
85 %
84 %
85 %
85 %
85 %
82 %
85 %
85 %
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Page 1 of 3
DC/DC Converters
THD 12WI Series
Input Specifications
Input current
(no load)
24 V; 3.3 & 5.1 VDC
24 V; other
48 V; 3.3 & 5.1 VDC
48 V; other
models:
models:
models:
models:
55 mA
15 mA
20 mA
7 mA
12 Watt
Input current
(full load)
Input voltage variation
(dv/dt)
Start-up voltage
Under voltage shut down (lock-out circuit)
Surge voltage
(100 msec. max.)
Conducted noise
(input)
ESD
(input)
Fast Transient
(input)
Surge
(input)
24 Vin models:
610 mA typ.
48 Vin models:
310 mA typ.
5 V / ms, max.
(complies to ETS 300 132 part. 4.4)
24 Vin models:
9 VDC
(or lower)
48 Vin models:
18 VDC
(or lower)
24 Vin models:
8 VDC typ.
48 Vin models:
16 VDC typ.
24 Vin models:
50 V max.
48 Vin models:
100 V max.
EN 55022 level A, FCC part 15, level A
EN 61000-4-2, Perf. Criteria B
EN 61000-4-4, Perf. Criteria B
EN 61000-4-5, Perf. Criteria B
±1.2 %
– Input variation Vin min. to Vin max.
– Load variation 10 – 100 %
single output models:
dual output models balanced load:
dual output models unbalanced load:
0.2 % max.
0.5 % max.
1.0 % max.
5.0 % max.
250 µs
85 mVpk-pk max.
±0.02 %/K
– at power on
450 ms typ.
– at remote on
5 ms typ.
150 % typ. of Iout max., constant current
3.3
5.1
12
15
VDC
VDC
VDC
VDC
models:
models:
models:
models:
3.9 VDC
6.2 VDC
15 VDC
18 VDC
indefinite, automatic recovery
10 % of rated max. current
(operation at lower
load condition will not damage these converters
however, they may t meet all listed specifications)
3.3 & 5.1
12
15
±5
±12
±15
– Operating
– Case temperature
– Storage
Vout
Vout
Vout
Vout
Vout
Vout
models:
models:
models:
models:
models:
models:
2000 µF max.
430 µF max.
300 µF max.
±1250 µF max.
±200 µF max.
±120 µF max.
–40°C to +85°C
+105°C max.
–55°C to +105°C
3.3 & 5.1 Vout models:
2.2 %/K above 60°C
other models:
2.5 %/K above 65°C
Output Specifications
Voltage set accuracy
Regulation
Transient response setting time
(25% load step change)
Ripple and noise
(20 MHz Bandwidth)
Temperature coefficient
Start up time
(nominal Vin and constant resistive load)
Output current limitation
Over-voltage protection (only single output models)
Short circuit protection
Minimum load
Capacitive load
General Specifications
Temperature ranges
Derating
All specifications valid at nominal input voltage, full load and +25°C after warm-up time unless otherwise stated.
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Page 2 of 3
DC/DC Converters
THD 12WI Series
General Specifications
Humidity
(non condensing)
Reliability, calculated MTBF
(MIL-HDBK-217F, at +25°C, ground benign)
Thermal shock
Isolation voltage
(60sec.)
Isolation capacitance
Switching frequency
Safety standards
Safety approvals
Remote On/Off
– UL/cUL
– On:
– Off:
– Off idle current:
– Input/Output
– Input/Output
95 % rel H max.
>870’000 h
MIL–STD–810F
1500 VDC
1500 pF max.
400 kHz typ.
(pulse width modulation PWM)
UL 60950-1, IEC/EN 60950-1
www.ul.com
-> certifications -> File e188913
3.0 ... 12 VDC or open circuit
(referenced to -Vin)
0 ... 1.2 VDC or short circuit pin 1 and pin 2/3
2.5 mA
copper, nickel plated
non conductive FR4
epoxy
(UL94V-0 rated)
18 g (0.62 oz)
max. 265°C / 10 sec.
12 Watt
Physical Specifications
Casing material
Baseplate material
Potting material
Weight
Soldering temperature
Application note:
www.tracopower.com/products/thd12wi-application.pdf
Outline Dimensions
Pin-Out
Pin
23
22
Bottom view
1
2
3
2.0
(0.08)
2.54
(0.10)
Single
Remote On/Off
–Vin (GND)
–Vin (GND)
ntc.
ntc.
+Vout
–Vout
+Vin (Vcc)
+Vin (Vcc)
Dual
Remote On/Off
–Vin (GND)
–Vin (GND)
Common
–Vout
+Vout
Common
+Vin (Vcc)
+Vin (Vcc)
1
2
3
9
11
5.08 15.24
(0.60)
31.8
(1.25)
25.4
(1.0)
(0.20)
16
14
2.5
3.8
10.2
(0.10)
(0.15) (0.40)
9
11
14
16
22
23
Insulated Baseplate
15.24
(0.60)
20.3
(0.80)
ntc = not to connect
Specifications can be changed any time without notice.
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)
Rev. 03/12
Jenatschstrasse 1 · CH-8002 Zurich · Switzerland
Tel. +41 43 311 45 11 · Fax +41 43 311 45 45 · info@traco.ch · www.tracopower.com
Page 3 of 3
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