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Home > Polytron Power Supplies > Polytron RWB20 Series DC-DC Converters, 20 Watt, Single and Dual Output for Railway Applications, 1.00" x 2.00" x 0.40"
Polytron RWB20 Series DC-DC Converters, 20 Watt, Single and Dual Output for Railway Applications, 1.00" x 2.00" x 0.40"
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Price (Each): Call or e-mail for quotes or to order.
Available to Order
Item Number: RWB20
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Efficient and reliable for railroad
safety
Designed for railway applications, our 20-watt single and dual output RWB20 DC-DC converter meets UL60950-1, EN60950-1, IEC60950-1 and EN50155 standards and has an output current up to 2.4 A. This model also features a standard 1.00" x 2.00" x 0.40" package and its CE mark meets 2006/95/EC, 93/68/EEC and 2004/108EC.
RWB20 Series Specification Sheet PDF
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Output Current
(mA) |
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Daburn Part
Number |
Input Voltage
Range (Vdc) |
Output Voltage
(Vdc) |
Min. Load |
Full Load |
Output Ripple & Noise |
Input Current
No Load
(mA) |
Efficiency
% |
Max. Capacitor
Load µF |
| Single Output |
| RWB20-24S33 |
9-36 |
3.3 |
0 |
4500 |
75mVp-p |
6 |
85 |
7000μF |
| RWB20-24S5 |
5 |
0 |
4000 |
75mVp-p |
6 |
88 |
5000μF |
| RWB20-24S12 |
12 |
0 |
1670 |
100mVp-p |
6 |
89 |
850μF |
| RWB20-24S15 |
15 |
0 |
1330 |
100mVp-p |
6 |
88 |
700μF |
| RWB20-48S33 |
18-75 |
3.3 |
0 |
4500 |
75mVp-p |
4 |
85 |
7000μF |
| RWB20-48S5 |
5 |
0 |
4000 |
75mVp-p |
4 |
89 |
5000μF |
| RWB20-48S12 |
12 |
0 |
1670 |
100mVp-p |
4 |
89 |
850μF |
| RWB20-48S15 |
15 |
0 |
1330 |
100mVp-p |
4 |
89 |
700μF |
| RWB20-10S33 |
43-160 |
3.3 |
0 |
4500 |
75mVp-p |
3 |
85 |
7000μF |
| RWB20-110S5 |
5 |
0 |
4000 |
75mVp-p |
3 |
87 |
5000μF |
| RWB20-10S12 |
12 |
0 |
1670 |
100mVp-p |
3 |
88 |
850μF |
| RWB20-25S15 |
15 |
0 |
1330 |
100mVp-p |
3 |
88 |
700μF |
| Dual Output |
| RWB20-24-12 |
9-36 |
±12 |
0 |
±833 |
100mVp-p |
6 |
88 |
±500μF |
| RWB20-24-15 |
±15 |
0 |
±667 |
100mVp-p |
6 |
89 |
±350μF |
| RWB20-48-12 |
18-75 |
±12 |
0 |
±833 |
100mVp-p |
4 |
88 |
±500μF |
| RWB20-48-15 |
±15 |
0 |
±667 |
100mVp-p |
4 |
89 |
±350μF |
| RWB20-110-12 |
43-160 |
±12 |
0 |
±833 |
100mVp-p |
3 |
88 |
±500μF |
| RWB20-110-15 |
±15 |
0 |
±667 |
100mVp-p |
3 |
89 |
±350μF |
Input and Output Specifications:
INPUT
- Voltage Range
- 24 Vdc nominal input: 18 - 36 Vdc
- 48 Vdc nominal input: 36 - 75 Vdc
- 110 Vdc nominal input: 43 - 160 Vdc
- Input Filter: Pi Filter
- Input Surge Voltage
- 24 Vdc input: 50 Vdc 1 sec, max.
- 48 Vdc input: 100 Vdc 1 sec, max.
- 110 Vdc input: 170 Vdc 1 sec., max.
- Input Reflected Ripple Current Normal input and full load: 30 mAp-p
- Startup Time
- Normal input and constant resistive load
- Power up: 30 ms, max.
- Remote On/On 30 ms, max.
- Startup Voltage
- 24 Vdc input: 9 Vdc, max.
- 48 Vdc input: 18 Vdc, max.
- 110 Vdc input: 43 Vdc, max.
- Shutdown Voltage
- 24 Vdc input: 8 Vdc
- 48 Vdc input: 16 Vdc
- 110 Vdc input: 40 Vdc
- Remote ON/OFF
- Positive Logic (Option)
- DC-DC ON: Open or 3V < Vr < 15V
- DC-DC OFF: Short or 0V < Vr < 1.2V
- Negative Logic (Standard)
- DC-DC ON: Short or 0V < Vr < 1.2V
- DC-DC OFF: Open or 3V < Vr < 15V
- Input Current of Remote Control Pin
- Nominal input: -0.5 mA - 1.0 mA
- Remote off state input current
OUTPUT
- Output Power: 20 Watts
- Voltage Accuracy: ±1%
- Minimum Load: 0%
- Voltage Adjustability
- Line Regulation:
- LL to HL at Full Load
- Single: ±0.2%
- Dual: ±0.5%
- Load Regulation
- No Load to Full Load
- Single: ±0.2%
- Dual: ±1.0%
- 10% Load to 90% Load
- Single: ±0.1%
- Dual: ±0.8%
- Cross Regulation Asymmetrical Load 25%/100% FL
- Ripple and Noise 20MHz band width: 75 - 100 mVp-p
- Measured with a 1u50F/50V X7R MLCC
- Temperature Coefficient: ±0.2%/°C, max.
- Transient Response recovery time
- 25% load step change: 250μS
- Over voltage protection
- 3.3 Vdc output: 3.7 Vdc - 5.4 Vdc
- 5 Vdc output: 5.6 Vdc - 7.0 Vdc
- 12 Vdc output: 13.5 Vdc - 19.6 Vdc
- 15 Vdc output: 16.8 Vdc - 20.5 Vdc
- Overload Protection
- Percent of FL at nominal input: 150%
- Short Circuit Protection: Hiccup, automatic recovery
More Specifications:
GENERAL
- Efficiency: 85 - 89%
- Isolation Voltage
- Input to Output: 1600 Vdc, min. 1 minute
- Input (Output) to Case: 1000 Vdc, min. 1 minute
- Isolation Resistance: 109 ohms, min.
- Isolation Capacitance: 3000 pF, max.
- Switching Frequency: 330 KHz, ±10%
- Approvals and Standards: IEC60950-1, UL60950-1, EN60950-1, EN50155
- Case Material: Nickel coated copper
- Base material: FR4 PCB
- Potting Material: Silicon (UL94-V0)
- Dimensions: 1.00 x 2.00 x 0.40 inches (25.4 x 50.8 x 10.2 mm)
- Weight: 30 g (1.06 oz.)
- MTBF
- BELLCORE TR-NWT-000332: 1.630 x 106 hrs
- MIL-HDBK-217F: 4.950 x 105 hrs
ENVIRONMENTAL
- Operating Ambient Temperature: -40 to 101°C with derating
- Maximum Case Temperature: 105°C
- Storage Temperature Range: -55 to 125°C
- Thermal Impedance
- Natural Convection: 12°C
- Natural Convection with Heat Sink: 10°C
- Thermal Shock: EN61373, MIL-STD-810F
- Vibration: EN61373, MIL-STD-810F
- Relative Humidity: 5 - 95% RH
PHYSICAL
- Case material: Copper
- Base material: FR4 PCB
- Potting material: Epoxy (UL94 V-0)
- Weight: 16.5 g. (0.58 oz.)
- MTBF: 3.308x106 hrs, MIL-HDBK-217F, full load
EMC CHARACTERISTICS
- EMI: EN55022, EN55011
- 24 Vdc, 48 Vdc: Class B
- 110 Vdc: Class A
- ESD, EN61000-4-2, Perf. Criteria A
- 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 Vrms, Perf. Criteria A
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