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Meanwell RDDW20UW-12 is 20W DC-DC reliable railway Converter with 8.5~160V8mA312mA±12V±0~833mA. The model highlights module type and 2"x1"package. At the same time, the main features are as following: international standard pins, high efficiency up to 89%, wide working temperature range -40~+95℃, 3KVAC I/P-O/P isolation voltage, and meet EN501 55 with external circuits, continuous-mode short circuit protection, etc. Additionally, the models account for 8.5~160VDC 18:1 ultra-wide input range, and various output voltage, 5V/12V/15V for single output, and ±12V/±15V/±24 for dual outputs. Thanks to its high efficiency, excellent reliability and good performane, Meanwell RDDW20UW-12 is suitable for railway, trams, buses, and also can be used in the harsh environment with high vibration, high dust, extremely low or high temperature, etc.
RDDW | Series Name S: Single Mode, D: Dual Mode |
20 | Rated Wattage |
UW | Ultra wide input voltage (8.5-160Vdc) |
12 | Output Voltage (5/12/15Vdc, ±12/15/±24Vdc) |
ORDER NO. | INPUT | OUTPUT | EFFICIENCY (TYP.) | CAPACITOR LOAD (MAX) | |||
INPUT VOLTAGE (RANGE) | INPUT CURRENT | OUTPUT VOLTAGE | OUTPUT CURRENT | ||||
NO LOAD | FULL LOAD | ||||||
RDDW20UW-12 | Normal12V,24V,48V,72V,96V,110V (8.5~160V) | 8mA | 312mA | ±12V | ±0~833mA | 88% | 820μF |
RDDW20UW-15 | 9mA | 312mA | ±15V | ±0~667mA | 89% | 680μF | |
RDDW20UW-24 | 9mA | 309mA | ±24V | ±0~417mA | 89% | 330μF | |
INPUT | VOLTAGE RANGE | 8.5~160Vdc | |||||
SURGE VOLTAGE (100ms max.) | 200Vdc | ||||||
FILTER | Pi type | ||||||
PROTECTION | 4A fast acting fuse | ||||||
OUTPUT | VOLTAGE ACCURACY | ±1.0% | |||||
RATED POWER | 20W | ||||||
RIPPLE & NOISE | 100mVp-p | ||||||
LINE REGULATION | ±0.2% | ||||||
LOAD REGULATION | Single output models: ±0.3%, Dual output models:±1% | ||||||
CROSS REGULATION | ±5% at 25%~100% load | ||||||
SWITCHING FREQUENCY (Typ.) | 200KHz | ||||||
EXTERNAL TRIM ADJ. RANGE (Typ.) | -20%~+15% (Single output model only) | ||||||
PROTECTION | SHORT CIRCUIT | Protection type : Continuous, automatic recovery | |||||
OVERLOAD | 110~180% rated output power | ||||||
Protection type : Recovers automatically after fault condition is removed | |||||||
OVER VOLTAGE | Protection type : Clamp by diode | ||||||
UNDER VOLTAGE LOCKOUT | Start-up voltage: 9Vdc | ||||||
Shutdown voltage: 8Vdc | |||||||
FUNCTION | REMOTE CONTROL | Power ON: >4.0~160Vdc or open circuit Power OFF: <1.2Vdc or short |
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ENVIRONMENT | COOLING | Free-air convection | |||||
WORKING TEMP. | -40~+95℃ (Refer to "Derating Curve") | ||||||
CASE TEMPERATURE | +105℃ max. (+110℃ thermal shutdown) | ||||||
WORKING HUMIDITY | 20% ~ 90% RH non-condensing | ||||||
STORAGE TEMP., HUMIDITY | -55~+125℃, 10~95% RH non-condensing | ||||||
TEMP. COEFFICIENT | 0.03%/℃ (0~95℃) | ||||||
SOLDERING TEMPERATURE | 1.5mm from case of 1~3sec./260℃ max | ||||||
VIBRATION | 10~500Hz, 2G 10min./1cycle, period for 60min. each along X, Y, Z axes | ||||||
OPERATING ALTITUDE | 5000 meters | ||||||
SAFETY&EMC | SAFETY STANDARDS | UL62368-1, EAC TP TC 004 approved | |||||
WITHSTAND VOLTAGE | I/P-O/P:3KVAC | ||||||
ISOLATION RESISTANCE | I/P-O/P:100M Ohms / 500VDC / 25℃/ 70% RH | ||||||
ISOLATION CAPACITANCE (Typ.) | 20pF | ||||||
EMC EMISSION | Parameter | Standard | Test Level | ||||
Conducted | BS EN/EN50121-3-2 | Class A/B with external components | |||||
Radiated | BS EN/EN50121-3-2 | N/A | |||||
EMC IMMUNITY | Parameter | Standard | Test Level | ||||
ESD | BS EN/EN61000-4-2 | Level 3, ±8KV air, ±6KV contact | |||||
Radiated Susceptibility | BS EN/EN61000-4-3 | Level 3, 80~1000MHz, 20V/m | |||||
EFT/Burest | BS EN/EN61000-4-4 | Level 3, On power input port,±2KV external input capacitor required | |||||
Surge | BS EN/EN61000-4-5 | Level 4, Line to earth, ±4KV Line to Line, ±2KV |
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Conducted | BS EN/EN61000-4-6 | Level 3, 0.15~80MHz, 10V | |||||
RAILWAY STANDARD | EN50155 / IEC60571 including EN61373 for shock & vibration, EN50121-3-2 for EMC | ||||||
OTHERS | MTBF | 1570Khrs MIL-HDBK-217F (25℃) | |||||
DIMENSION (L*W*H) | 50.8*25.4*10.2mm (2*1*0.4 inch) | ||||||
CASE MATERIAL | Black coated copper with Non-Conductive Base | ||||||
PACKING | 35g ; 12pcs/per tube, 300pcs/25 tube/per carton |
l 3 years warranty
l Full encapsulated
l 3KVAC l/O isolation
l Remote ON/OFF control
l No minimum load required
l Compliance with railway standard EN50155
l DIP 2"x1" package with standard pinout
l 18:1 (8.5~160Vdc) ultra-wide input range
l Wide operating temperature range -40~+95℃
l Operating altitude up to 5000 meters
l Protections: Short circuit (Continuous)/Overload/Over voltage/Input under voltage
l Industrial control facility
l Instrument
l Analyzer
l Bus, tram, metro or railway system
l Telecom/ datacom system
l Wireless network
l Highly vibrating, heavily dusty, exteremely low or high temperature harsh environment
Brand | Meanwell |
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