DC/DC Converters
THN 20WI Series, 20 Watt
Features
◆
Smallest encapsulated 20W Converter!
Ultra compact size: 1.0” x 1.0” x 0.4”
e
p
UL 60950-1
Scheme
C
d
B
g
in
n
UL 60950-1
◆
Shielded metal case with isolated
baseplate
◆
◆
◆
◆
◆
Ultrawide 4:1 input voltage ranges
Very high efficiency up to 90%
Output voltage adjustable
Remote On/Off control
Operating temp. range –40°C to +75°C
and up to 85 °C with heat-sink
◆
I/O isolation voltage 1500 VDC
◆
Input filter meets EN 55022 class A
without external components
◆
No minimum load required
◆
Lead free design, RoHS compliant
◆
3-year product warranty
The THN-20WI series is the latest generation of high performance dc-dc converter
modules with highest power density. The product achieves 20W output power while
it comes in a metal case with dimensions of only 1.0”x 1.0”x 0.4”.
All models have an ultra wide 4:1 input voltage range and precisely regulated
output voltages, even under no load conditions. Highest efficiency of up to 90%
makes this product very reliable and applicable in temperature ranges of up to
75°C or 85°C with optional mounted heat sink. Together with low input current
characteristics at minimal load and remote On/Off control these converters are
the ideal solution for battery-operated systems. Typical applications are in mobile
equipments, instrumentation, distributed power architectures in communication and
industrial electronics and everywhere where space on the PCB is critical.
Models
Order code
THN 20-2410WI
THN 20-2411WI
THN 20-2412WI
THN 20-2413WI
THN 20-2422WI
THN 20-2423WI
THN 20-4810WI
THN 20-4811WI
THN 20-4812WI
THN 20-4813WI
THN 20-4822WI
THN 20-4823WI
18 – 75 VDC
(48 VDC nominal)
9 – 36 VDC
(24 VDC nominal)
Input voltage range
Output voltage
3.3 VDC
5.0 VDC
12 VDC
15 VDC
±12 VDC
±15 VDC
3.3 VDC
5.0 VDC
12 VDC
15 VDC
±12 VDC
±15 VDC
Output current max.
4500 mA
4000 mA
1670 mA
1330 mA
±833 mA
±667 mA
4500 mA
4000 mA
1670 mA
1330 mA
±833 mA
±667 mA
Efficiency typ.
86 %
89 %
89 %
89 %
89 %
89 %
86 %
89 %
89 %
90 %
89 %
89 %
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Page 1 of 4
DC/DC Converters
THN 20WI Series
Input Specifications
Input current at no load
(at nominal input voltage)
Input current at full load
(at nominal input voltage)
24 V models:
6 mA typ.
48 V models:
4 mA typ.
24 V; 3.3 VDC
24 V; other
48 V; 3.3 VDC
48 V; other
models:
models:
models:
models:
760 mA typ.
980 mA typ..
380 mA typ.
490 mA typ.
20 Watt
Start-up voltage / under voltage shut down
Surge voltage
(1 sec. max.)
Reflected input ripple current
Conducted noise
(input)
ESD
(electrostatic discharge)
Radiated immunity
Fast transient / Surge
24 Vin models:
9 VDC / 8 VDC
48 Vin models:
18 VDC / 16 VDC
24 Vin models:
50 V max.
48 Vin models:
100 V max.
30 mAp-p typ.
EN 55022 class A, FCC part 15, level A
without external components
EN 61000-4-2, air ±8 kV, contact ±6 kV,
perf. criteria A
EN 61000-4-3, 10 V/m, perf. criteria A
EN 61000-4-4, ±2 kV, perf. criteria A
EN 61000-4-5, ±2 kV perf. criteria A
With external input capacitor e.g. Nippon
chemi-con KY 200 µF, 100 V, ESR 48 mOhm
EN 61000-4-6, 10 Vrms, perf. criteria A
±1 %
±10 %
for single output models only.
Trim up via resistor over Trim and -Vout
Trim down via resistor over Trim and +Vout
(Resistor values tba, 0 Ohm=max. adjustment)
Conducted immunity
Output Specifications
Voltage set accuracy
Output voltage adj. range
Regulation
single output models:
dual output models:
– Load variation (0 – 100 %)
single output models:
dual output models balanced load:
dual output models unbalanced load (25% /100%):
– Input variation (Vmin – Vmax)
0.2 % max.
0.5 % max.
0.2 % max.
1.0 % max.
5.0 % max.
not required
Minimum load
Ripple and noise
(20 MHz bandwidth)
3.3 & 5.0 VDC models:
75 mVp-p typ.
other models:
100 mVp-p typ.
Measured with a 1µF M/C and a 10µF T/C
±0.02 %/K
at 150 % of Iout max., foldback
indefinite, automatic recovery
3.3
5
12
15
VDC
VDC
VDC
VDC
models:
models:
models:
models:
3.7 – 5.4 Vout
5.6 – 7.0 Vout
13.5 – 19.6 Vout
16.8 – 20.5 Vout
30 ms typ.
(for power on and remote on)
250 µs typ.
(25% load step change)
3.3
5
12
15
±12
±15
VDC
VDC
VDC
VDC
VDC
VDC
models:
models:
models:
models:
models:
models:
10’000 µF
5’000 µF
850 µF
700 µF
500 µF
(each output)
350 µF
(each output)
Page 2 of 4
Temperature coefficient
Output current limitation
Short circuit protection
Over voltage protection
Start up time
(nominal Vin and constant resistive load)
Transient response setting time
Max. capacitive load
http://www.tracopower.com
DC/DC Converters
THN 20WI Series
General Specifications
Temperature ranges
–
–
–
–
Operating without heat sink
Operating with heat sink
Case temperature
Storage
–40°C to +75°C
(with derating)
–40°C to +85°C
(with derating)
+105°C max.
–55°C to +125°C
2.0 %/K above 60°C
2.0 %/K above 70°C
17.6°C/W
14.8°C/W
5 % to 95 % rel H max.
>550’000 h
1’500 VDC
1000 pF typ.
>1’000 MOhm
3.0 ... 15 VDC or open circuit
0 ... 1.2 VDC or short circuit pin 6 and pin 2
1.5 mA
330 kHz typ.
(pulse width modulation PWM)
EN 61373, MIL-STD-810E
UL/cUL 60950-1, IEC/EN 60950-1
– UL/cUL
www.ul.com
-> certifications -> File e188913
nickel coated copper
non conductive FR4
silicone
(UL 94V-0 rated)
15 g
(0.53 oz)
max. 265°C / 10 sec.
– Reach
– RoHS
www.tracopower.com/products/thn20wi-reach.pdf
RoHS directive 2011/65/EU
– Input/Output
– Input/Output
– Input/Output (500 VDC)
– On:
– Off:
– Off idle current:
20 Watt
Power derating
Thermal impedance
Humidity
(non condensing)
– Operating without heat sink
– Operating with heat sink
– Natural convection
– Natural convection with heat sink
Reliability, calculated MTBF
(MIL-HDBK-217F, at +25°C, ground benign)
Isolation voltage
(60sec.)
Isolation capacitance
Isolation resistance
Remote On/Off
Switching frequency
(fixed)
Vibration and thermal shock
Safety standards
Safety approvals
Casing material
Baseplate
Potting material
Weight
Soldering temperature
Environmental compliance
Physical Specifications
Application note:
www.tracopower.com/products/thn20wi-application.pdf
All specifications valid at nominal input voltage, full load and +25°C after warm-up time unless otherwise stated.
http://www.tracopower.com
Page 3 of 4
DC/DC Converters
THN 20WI Series
Outline Dimensions
20 Watt
7.62
(0.3)
5.08
(0.2)
Pin-Out
Pin
1
2
25.4
(1.0)
(0.1)
Single
+Vin (Vcc)
–Vin (GND)
+ Vout
Trim
–Vout
Dual
+Vin (Vcc)
–Vin (GND)
+ Vout
Common
–Vout
6
20.32
(0.8)
2
1
Bottom view
2.5
5
4
10.16
(0.4)
3
4
5
6
3
10.16
(0.4)
5.6
(0.22)
9.9
(0.39)
2.5
(0.1)
Remote On/Off
25.4
(1.0)
Dimensions in [mm], () = Inch
Pin diameter ø 1.0 (0.04)
Pin pitch tolerances: ±0.25 (±0.01)
Tolerances: ±0.5 (±0.02)
Heat-Sink (Option)
Order code: THN-HS1
(cont.: heat-sink, thermal pad, 2 clamps)
Material:
Aluminum
Finish:
Anodic treatment (black)
Weight:
8 g (0.28 oz) without converter
Thermal impedance after assembling: 14.8 K/W
31.1
(1.22)
max.
Note:
The product label on converter has to be re-
moved before mounting the heat-sink.
For volume orders converters will be sup-
plied with heat-sink already mounted. Please
contact factory for quotation.
Separate heat-sinks are only available for
prototypes and small quantity orders.
Heat-sink
Thermal pad
Clamp
Converter
16.5
(0.65)
max.
Specifications can be changed without notice! Make sure you are using the latest documentation, downloadable at www.tracopower.com
14.5
(0.57)
www.tracopower.com
Rev. October 11. 2013
Page 4 of 4
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