6W Isolated Railway Vehicle Electronic Equipment DC-DC Converter
6W Isolated DC-DC Converter Railway Vehicle Electronic Equipment
Description
URA1D_YMD-6WR3&URB1D_YMD-6WR3 series are isolated 6W DC-DC converter products with 40-160VDC input voltage with eficiencies of up to 86%, input to output isolation is tested with 250VDC and the converter safely operate ambient temperature of- 40℃ to +85℃, input under-voltage protection,output short-circu![]()
over-curent,over-voltage protection.They are widely used in railway vehicle applications using 72V,96Vand 110V batery voltages.
over-curent,over-voltage protection.They are widely used in railway vehicle applications using 72V,96Vand 110V batery voltages.
Features
Ultra-wide 4: 1 input voltage range
High efficiency up to 86%
I/O isolation test voltage: 2.25k VDC
Operating ambient temperfuature range: -40℃ to +85℃
Input under-voltage protection, output short- circuit, over-current, over-voltage protection
Low ripfiple & noise
Input reverse polarity protection available with chassis(A2S ) or Din-Rail mounting (A4S) version
Meets EN50155 railway standard
Industry standard pin-out
Specificatioin
| Selection Guide | |||||||
| Certification | Part No. ① | Input Voltage (VDC) | Output |
Full Load Efficiency④ (%) Min./Typ. |
Capacitive Load⑤ (µF)Max. |
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| Nominal② (Range) | Max.③ | Voltage (VDC) | Current (mA) Max./Min. | ||||
|
EN/BS EN |
URA1D05YMD-6WR3 |
1 10 (40- 160) |
170 |
±5 | ±600/0 | 78/80 | 470 |
| URA1D12YMD-6WR3 | ± 12 | ±250/0 | 82/84 | 100 | |||
| URA1D15YMD-6WR3 | ± 15 | ±200/0 | 83/85 | 100 | |||
| URB1D05YMD-6WR3 | 5 | 1200/0 | 78/80 | 1000 | |||
| URB1D12YMD-6WR3 | 12 | 500/0 | 82/84 | 470 | |||
| URB1D15YMD-6WR3 | 15 | 400/0 | 83/85 | 220 | |||
| URB1D24YMD-6WR3 | 24 | 250/0 | 84/86 | 100 | |||
|
Note: ①Use“H”suffix for heat sink mounting,“A2S”suffix for chassis mounting and“A4S”suffix for Din-Rail mounting. We recommend to choose modules with a heat sink for enhanced heat dissipation and applications with extreme temperature requirements; ②The minimum input voltage and starting voltage of A2S and A4S Model are 1VDC higher than those of DIP package due to input reverse polarity protection function; ③Exceeding the maximum input voltage may cause permanent damage; ④Efficiency is measure at nominal input voltage and rated output load; efficiencies for A2S and A4S Model’s is decreased by 2% due to the input reverse polarity protection circuit. ⑤The specified maximum capacitive load for Vo 1 and Vo2 output is identical. |
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| Input Specifications | |||||
| Item | Operating Conditions | Min. | Typ. | Max. | Unit |
| Input Current (full load / no-load) | Nominal input voltage | -- | 68/3 | 70/8 |  A |
| Reflected Ripple Current | Nominal input voltage | -- | 25 | -- | |
| Surge Voltage (1sec. max.) | -0.7 | -- | 180 |
VDC |
|
| Start-up Voltage | -- | -- | 40 | ||
| Input Under-voltage Protection | 28 | 33 | -- | ||
| Start-up Time | Nominal input voltage & constant resistance load | -- | 10 | -- | ms |
| Input Filter | Pi filter | ||||
| Hot Plug | Unavailable | ||||
| Ctrl * | Module on | Ctrl pin open or pulled high (3.5- 12VDC) | |||
| Module off | Ctrl pin pulled low to GND (0- 1.2VDC) | ||||
| Input current when off | -- | 3 | 8 |  A |
|
| Note: *The Ctrl pin voltage is referenced to input GND. | |||||
| Output Specifications | ||||||
| Item | Operating Conditions | Min. | Typ. | Max. | Unit | |
| Voltage Accuracy① | 0%- 100% load | -- | ± 1 | ±3 |
% |
|
| Linear Regulation | Input voltage variation from low to high at full load | Vo1 | -- | ±0.2 | ±0.5 | |
| Vo2 | -- | ±0.5 | ± 1 | |||
| Load Regulation② | 0%- 100% load | URB1D_YMD-6WR3 | -- | ±0.5 | ± 1 | |
| 5%- 100% load | Vo1 of URA1D_YMD-6WR3 | ±0.5 | ± 1 | |||
| Vo2 of URA1D_YMD-6WR3 | ±0.5 | ± 1.5 | ||||
| Cross Regulation | Dual output, Vo1 load at 50%, Vo2 load at range of 25%- 100% | -- | -- | ± 10 | ||
| Transient Recovery Time | 25% load step change, nominal input voltage | -- | 300 | 500 | µs | |
| Transient Response Deviation | 5V, ±5V output | -- | ±3 | ±8 | % | |
| Others | -- | ±3 | ±5 | |||
| Temperature Coefficient | Full load | -- | ±0.02 | ±0.03 | %/℃ | |
| Ripple & Noise③ | 20MHz bandwidth, 5%- 100% load | -- | 50 | 100 | mVp-p | |
| Over-voltage Protection | Input voltage range | 1 10 | -- | 160 | %Vo | |
| Over-current Protection | 120 | -- | 210 | %Io | ||
| Short-circuit Protection | Continuous, self-recovery | |||||
|
Note: ①Vo2 output voltage accuracy of ±5VDC output converter for 0%-5% load is ±5% max; ②URA1D_YMD-6WR3 load regulation for 0%- 100% load is ±5%; ③Under 0% -5% load conditions, ripple & noise does not exceed 5%Vo. The ”parallel cable”method is used for Ripple and Noise test, please refer to DC-DC Converter Application Notes for specific information. |
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| Mechanical Specifications | ||
| Case Material | Aluminum alloy | |
|
Dimensions |
Horizontal package( without heat sink) | 25.40 × 25.40 × 1 1.70 mm |
| Horizontal package( with heat sink) | 25.40 × 25.40 × 16.20 mm | |
| A2S wiring package ( without heat sink) | 76.00 × 31.50 × 21.20 mm | |
| A2S wiring package( with heat sink) | 76.00 × 31.50 × 25.20 mm | |
| A4S rail package( without heat sink) | 76.00 × 31.50 × 25.80 mm | |
| A4S rail package( with heat sink) | 76.00 × 31.50 × 29.80 mm | |
|
Weight |
Without heat sink | Horizontal package/A2S wiring package/A4S rail package | 12.5g/36.0g/56.0g (Typ.) |
| With heat sink | Horizontal package/A2S wiring package/A4S rail package | 17.0g/40.0g/59.0g (Typ.) | |
| Cooling Methods | Free air convection | ||
Dimensions and Recommended Layout
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