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Mean Well RSDW20UW-12 Ultra-wide input DC/DC LED Driver 20W 12V - Heavy Duty 1.67A
Mean Well RSDW20UW-12 Ultra-wide input DC/DC LED Driver 20W 12V - H...
Overview
RSDW20UW-12 is the 12V output model of this series: rated power 20W, typical efficiency 89%.
RSDW20UW and RDDW20UW series are 20W module type DC-DC reliable railway converter with 2"x1" package. It features international standard pins, a high efficiency up to 89%, wide working temperature range -40~+95℃, 3KVAC I/P-O/P isolation voltage, meet EN50155 with external circuits, continuous-mode short circuit protection, etc. 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/±24V for dual outputs, which are 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.
Features
- Compliance with railway standard EN50155
- DIP 2"x1" package with standard pinout
- 18:1(8.5~160Vdc) ultra-wide input range
- Wide operating temperature range -40 ~ +95℃
- No minimum load required
- Full encapsulated
- Protections: Short circuit (Continuous) / Overload / Over Voltage / Input under voltage
- 3KVAC I/O isolation
- Operating altitude up to 5000 meters (Note.5)
- Remote ON/OFF control
- 3 years warranty
Specifications
MODEL SELECTION TABLE
- INPUT VOLTAGE (RANGE)
- Normal 12V,24V,48V,72V,96V,110V (8.5 ~ 160V)
- INPUT CURRENT NO LOAD
- 10mA
- INPUT CURRENT FULL LOAD
- 312mA
- OUTPUT VOLTAGE
- 12V
- OUTPUT CURRENT
- 1670mA
- EFFICIENCY (Typ.)
- 89%
- CAPACITOR LOAD (MAX.)* For each output
- 3300μF
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 & NOISENote.2
- 100mVp-p
- LINE REGULATIONNote.3
- ±0.2%
- LOAD REGULATIONNote.4
- Single output models: ±0.3%, Dual output models:±1%
- CROSS REGULATION
- ±5% @ 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
- UNDER VOLTAGE LOCKOUT Shutdown voltage
- 8Vdc
FUNCTION
- REMOTE CONTROL
- Power ON: >4.0~160Vdc or open circuit Power OFF: <1.2Vdc or short
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 ALTITUDENote.5
- 5000 meters
SAFETY & EMC ( Note.6)
- 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/Bursts 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 Conducted BS EN/EN61000-4-6 Level 3, 0.15~80MHz, 10V - RAILWAY STANDARD
- EN50155 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
Test conditions and notes6
- 1.All parameters are specified at normal input(72Vdc), rated load, 25℃ 70% RH ambient.
- 2.Ripple & noise are measured at 20MHz by using a 12" twisted pair terminated with a 0.1μf & 47μf capacitor.
- 3.Line regulation is measured from low line to high line at rated load.
- 4.Load regulation is measured from 0% to 100% rated load.
- 5.The ambient temperature derating of 3.5℃/1000m for operating altitude higher than 2000m(6500ft).
- 6.The final equipment must be re-confirm that it still meet EMC directives. For guidance on how to perform these EMC tests, please refer to “EMI testing of component power supplies.”(as available on http://www.meanwell.com)
Technical drawings
Typical applications
- Bus, tram, metro or railway system
- Telecom/datacom system
- Wireless network
- Industrial control facility
- Instrument
- Analyzer
- Highly vibrating, heavily dusty, extremely low or high temperature harsh environment
Downloads
Certificates5
FAQ
Can I use the RSDW20UW-12 to power 12V automation electronics from a very wide input range?
Yes, if the load needs regulated 12V power and stays within 1.67A and 20W. This version is designed for an 8.5~160VDC input range, which supports systems operating across that full specified span.
Is this model suitable for 12V control, monitoring, or interface modules in heavy-duty equipment?
It can be used for 12V control, monitoring, or interface modules that do not exceed 1.67A or 20W. The converter also lists 3KVAC isolation and compliance with EN50155 railway standards.
Can the RSDW20UW-12 be used in compact 12V rail or transit electronics?
It is suited to compact 12V loads because it provides up to 1.67A in a 50.8 × 25.4 × 10.2 mm package. The stated railway compliance and -40°C to +95°C operating range are also relevant for transit equipment designs.
What kind of environment can the RSDW20UW-12 handle?
Its specified operating temperature range is -40°C to +95°C, so it is intended for demanding temperature conditions within that band. Because no IP rating is given, environmental sealing is not defined by the listed specs and should come from the enclosure.
What is the difference between the RSDW20UW-12 and its sibling models?
Within the RSDW20UW series, all three models are rated 20W with 8.5~160VDC input, 50.8 × 25.4 × 10.2 mm dimensions, 35g weight, and -40°C to +95°C operation. The output options are 5V at 4A for the -05, 12V at 1.67A for the -12, and 15V at 1.33A for the -15.
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