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Polytron LWB40 Series DC-DC Converters, 40 Watt 4:1 Ultra Wide Input Range 1.0" x 2.0" x 0.40"
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Product Options
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Six-sided continuous metal shielding ideal for railway applications
Good for railway applications, our 40 watt wide input range LWB40 series DC-DC converter features a low profile package, an operating temperature from -40 to 85°C and a minimum input/output isolation of 1600 Vdc. This series meets EN50155, EN50121-3 and EN61373 railway requirements and UL60950-1, EN60950-1, IEC60950-1 and EN50155 safety standards.
- 4:1 Wide Input Range
- Railway Applications: Meets EN50155, EN50121-3 and EN61373
- Safety Meets CE, UL60950-1, EN60950-1, IEC 60950-1, EN50155
- Operating Temperature: -40 to +85ºC
- Low Profile Package (1.00" × 2.00" × 0.40”)
- Input/Output Isolation: 1600Vdc Min.
- High Efficiency to 92% @ FL
- Six-Sided Continuous Metal Shielding
- Compliant to RoHS & Reach
LWB40 Series Specification Sheet PDF
| Model Number |
Input Voltage
Range (Vdc)
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Output Voltage
(Vdc) |
Output Current
Full Load (A) |
Input Current
No load (mA) |
Efficiency
(%) |
Max. Capacitor
Load µF |
| LWB40-24S33 |
9 - 36 |
3.3 |
10000 |
15 |
90 |
26600 |
| LWB40-24S5 |
5 |
8000 |
15 |
91 |
20000 |
| LWB40-24S12 |
12 |
3333 |
15 |
92 |
3900 |
| LWB40-24S15 |
15 |
2666 |
15 |
92 |
2600 |
| LWB40-24S24 |
24 |
1666 |
15 |
91 |
1300 |
| LWB40-24-12 |
±12 |
±1666 |
15 |
90 |
±2600 |
| LWB40-24-15 |
±15 |
±1333 |
15 |
90 |
±1600 |
| LWB40-24-24 |
±24 |
±833 |
15 |
91 |
±650 |
| LWB40-48S33 |
18 - 75 |
3.3 |
10000 |
10 |
90 |
26600 |
| LWB40-48S5 |
5 |
8000 |
10 |
91 |
20000 |
| LWB40-48S12 |
12 |
3333 |
10 |
92 |
3900 |
| LWB40-48S15 |
15 |
2666 |
10 |
92 |
2600 |
| LWB40-48S24 |
24 |
1666 |
10 |
91 |
1300 |
| LWB40-48-12 |
±12 |
±1666 |
10 |
90 |
±2600 |
| LWB40-48-15 |
±15 |
±1333 |
10 |
90 |
±1600 |
| LWB40-48-24 |
±24 |
±833 |
10 |
91 |
±650 |
| LWB40-110S33 |
43 - 160 |
3.3 |
10000 |
10 |
88 |
26600 |
| LWB40-110S5 |
5 |
8000 |
10 |
89 |
20000 |
| LWB40-110S12 |
12 |
3333 |
10 |
90.5 |
3900 |
| LWB40-110S15 |
15 |
2666 |
10 |
91 |
2600 |
| LWB40-110S24 |
24 |
1666 |
10 |
90 |
1300 |
| LWB40-110-24 |
±12 |
±1666 |
10 |
89 |
±2600 |
| LWB40-110-15 |
±15 |
±1333 |
10 |
89 |
±1600 |
| LWB40-110-24 |
±24 |
±833 |
10 |
91 |
±650 |
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Input and Output Specifications:
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INPUT
- Operating input voltage range
- 24 Vdc nominal input: 9 to 36 Vdc
- 48 Vdc nominal input: 18 to 75 Vdc
- 110 Vdc nominal input: 43 to 160 Vdc
- Start up voltage
- 24 Vdc nominal input: 9 Vdc
- 48 Vdc nominal input: 18 Vdc
- 110 Vdc nominal input: 43 Vdc
- Shutdown voltage
- 24 Vdc nominal input: 8 Vdc
- 48 Vdc nominal input: 16 Vdc
- 110 Vdc nominal input: 40 Vdc
- Start up time
- Constant resistive load, power up: 60 mS
- Constant resistive load, remote on/off: 60 mS
- Input surge voltage
- 1 sec. max, 24 Vdc nominal input: 50 Vdc
- 1 sec. max, 48 Vdc nominal input: 100 Vdc
- 1 sec. max, 110 Vdc nominal input: 170 Vdc
- Input filter: Pi type
- Remote ON/OFF
- Positive logic
- DC-DC ON: Open or 3 to 12 Vdc
- DC-DC OFF: Short or 0 to 1.2 Vdc
- Negative logic
- DC-DC ON: Short or 0 to 1.2 Vdc
- DC-DC OFF: Open or 3 to 12 Vdc
- Input current of control pin: -0.5 to 1 mA
- Remote off input current: 3 mA
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OUTPUT
- Voltage accuracy: ±1%
- Line regulation
- Low line to high line at full load: ±0.2%
- Load regulation
- No load to full load, single: ±0.5%
- No load to full load, dual: ±1%
- Cross regulation
- Asymmetrical load 25/100% FL, dual: ±5%
- Voltage and adjustability
- Single output, 3.3, 5 and 12 Vout: ±10%
- Single output, 15 and 24 Vout: -10 to 20%
- Ripple and noise (measured by 20 MHz)
- 3.3 and 5 Vout: 75 to 100 mVp-p
- 12 and 15 Vout: 100 to 125 mVp-p
- 24 Vout: 150 to 200 mVp-p
- Temperature coefficient: ±0.02%/°C
- Transient Response recovery time
- 25% load step change: 250µS
- Over voltage protection
- Zener diode clamp, 3.3 Vout: 3.9%
- Zener diode clamp, 5 Vout: 6.2%
- Zener diode clamp, 12 Vout: 15%
- Zener diode clamp, 15 Vout: 20%
- Zener diode clamp, 25 Vout: 30%
- Over load protection: 150%
- Short circuit protection: continuous, automatics recovery
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More Specifications:
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GENERAL
- Efficiency: 88 to 92%
- Isolation voltage
- Input to output: 1600 Vdc
- Input to case: 1600 Vdc
- Isolation resistance: 500 Vdc
- Isolation capacitance: 1500 pF
- Switching frequency: 225 to 275 kHz
ENVIRONMENTAL
- Operating ambient temperature: -40 to 85°C
- Maximum case temperature: 105°C
- Over temperature range: 115°C
- Storage temperature range: -55 to 125°C
- Thermal impedance (vertical direction by natural convection)
- Without heat sink: 10.8°C/W
- With heat sink: 10.3°C/W
- Thermal shock: MIL-STD-810F
- Shock: EN61373, MIL-STD-810F
- Vibration: EN61373, MIL-STD-810F
- Relative humidity: 5 to 95%
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PHYSICAL
- Design meets safety standards: UL60950-1, EN60950-1, IEC60950-1, EN50155
- Case material: copper
- Base material: FR4 PCB
- Potting material: Silicone (UL94 V-0)
- Weight: 32g (1.13 oz)
- MTBF: 9.073 x 10^5 hours, MIL-HDBK-217F, full load
EMC CHARACTERISTICS
- EMI: EN55011, EN55022 Class A
- ESD: EN6100-4-2, Perf. Criteria A
- Air: ±8 kV
- Contact: ±6 kV
- Radiated immunity
- EN61000-4-3: 20 V/m, Perf. Criteria A
- Fast transient
- EN61000-4-4: ±2kV, Perf. Criteria A
- Surge
- EN61000-4-5: ±2kV, Perf. Criteria A
- Conducted immunity
- EN61000-4-6: 10 Vr.m.s, Perf. Criteria A
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With a low profile package of 1.00" x 2.00" x 0.40", our 60 watt single and dual output DC-DC converter features six-sided continuous metal shielding, RoHS compliance and a minimum input/output isolation of 1600 Vdc. Safety-approved.
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