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DC/DC Converters
THD 15 Series, 15 Watt
Features
◆ Smallest encapsulated 15W Converter
Ultra compact Size: 25.4x25.4x10.2mm
◆ Single- and Dual Output Models
◆ I/O- Isolation Voltage 1500VDC
◆ High Efficiency up to 87%
◆ Operating Temp. Range: -25°C to 71°C
◆ Remote On/Off
◆ Industry Standard Pinout
◆ Lead free Design, RoHS compliant
◆ 3 Year Product Warranty
The THD-15 series is the latest generation of high performance 15W dc-dc converter
modules setting new standards concerning power density. This product comes in a
encapsulated package with dimensions of only 25.4 x 25.4 x 10mm and therefore
occupies 50%(!) less board space than existing 15W converters.
All models have wide 2:1 input voltage range and precisely regulated, isolated
output voltages. Built-in filters for both input and output minimizes the need for
external filtering. Further features include remote On/Off and short circuit pro-
tection. Typical applications for these converters are battery operated equipment,
instrumentation, distributed power architectures in communication and industrial
electronics and everywhere where space is limited on the PCB.
Order code Input voltage range Output voltage Output current max. Efficiency typ.
THD 15-2410 3.3 VDC 3‘500 mA 84 %
THD 15-2411 5.1 VDC 3‘000 mA 85 %
THD 15-2412 18 – 36 VDC 12 VDC 1‘250 mA 86 %
THD 15-2413 15 VDC 1’000 mA 86 %
THD 15-2422 ± 12 VDC ± 600 mA 85 %
THD 10-2423 ± 15 VDC ± 500 mA 85 %
THD 15-4810 3.3 VDC 3‘500 mA 84 %
THD 15-2411 5.1 VDC 3‘000 mA 86 %
THD 15-4812 36 – 75 VDC 12 VDC 1‘250 mA 87 %
THD 15-4813 15 VDC 1’000 mA 87 %
THD 15-2422 ± 12 VDC ± 600 mA 85 %
THD 15-4823 ± 15 VDC ± 500 mA 85 %
Models
pending
RoHS
compliant
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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 15 Series 15 Watt
Input Specifications
Input current (no load) 24 Vin models: 50 mA typ..
48 Vin models: 30 mA typ.
Input current (full load) 24 Vin; 3.3 Vout models: 570 mA typ.
24 Vin; other output models: 730 mA typ.
48 Vin; 3.3 Vout models: 280 mA typ.
48 Vin; other output models: 360 mA typ.
Start-up voltage / 24 Vin models: 17 VDC /16.5 VDC
under voltage shut down 48 Vin models: 34.0 VDC /32.5 VDC
Surge voltage 24 Vin models: 50 V max..
(100 msec. max.) 48 Vin models: 100 V max.
Conducted noise (input) EN 55022 level A, FCC part 15, level A
(with external input capacitor, see Note 1)
Output Specifications
Voltage set accuracy ± 1 %
Regulation – Input variation Vin min. to Vin max ± 0.5% max.
– Load variation 10 – 100 %
single output models: ± 0.5 % max.
dual output models balanced: ± 2.0 % max.
dual output models unbalanced: ± 5.0 % max.
Ripple and noise 100 mVpk-pk max.
(20 MHz Bandwidth) (with external output capacitor, see Note 1)
Temperature coefficient ± 0.02 % /K
Output current limitation >105% of Iout max., foldback
Short circuit protection indefinite (automatic recovery)
Start-up time 30ms max.
Max. capacitive load 1200µF
General Specifications
Temperature ranges – Operating –25 °C ... +71°C
– Derating 2.5%/K above 50
– Case temperature +100 °C max.
– Storage –40 °C ... +110 °C
Humidity (non condensing) 85 % rel H max.
Reliability, calculated MTBF (MIL-HDBK-217 F) > 190’000h @ +25°C
Isolation voltage – Input/Output 1’500 VDC
Isolation capacity – Input/Output 235 pF typ.
Isolation resistance – Input/Output (500 VDC) >100 M Ohm
Switching frequency (fixed) 330 kHz typ. (Pulse width modulation PWM)
Safety standards UL 60950, EN 60950, IEC 60950
compliance up to 60 VDC input voltage (SELV limit)
Safety approvals UL/cUL pending
Remote On/Off – ON: open circuit on pin RC
– OFF: short circuit between pin RC and pin –Vin
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Specifications can be changed without notice
DC/DC Converters
THD 15 Series 15 Watt
Physical Specifications
Case material plastic PBT (UL94V-0 rated)
Baseplate non conductive FR4
Potting material silicon (UL94V-0 rated)
Weight 12 g (0.41 oz)
Soldering temperature max. 260 °C / 10sec.
Outline Dimensions mm
Pin diameter ø 0.8 ±0.05 (0.02 ±0.002)
Tolerances ±0.35 (0.014)
Pin Single Dual
1+Vin (Vcc) +Vin (Vcc)
2–Vin (GND) –Vin (GND)
3+Vout +Vout
4 No pin Common
5 –Vout –Vout
6 Remote On/Off Remote On/Off
Pin-Out
Note 1
Recommended circuit to reduce conducted noise and output ripple & noise:
C1: 33µF low ESR electrolytic capacitor
C2: 10µF low ESR electrolytic capacitor
C3: 1µ film capacitor
For dual output models use capacitors for each output
+Vin
- Vin
+Vout
-Vout
C1 C2 C3
Load
25.4
25.4
Bottom view
20.32
7.62
3.5
(0.3)
(0.14)
(0.8)
(1.0)
(1.0)
5.08
(0.2)
10
(0.39)
1
2
3
6
5
*27.9
*(1.1)
*3.8
*(0.15)
2.5
(0.1)
4
10.16
(0.4)
2.5
(0.1)
10.16
(0.4)
*Dual Output Models
() = Inch
Rev. 07/05
