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Mean Well RDDW08G-15 DC-DC Converter - 8W - 18~75V in ±15V out 256mA
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RDDW08G-15 is the ±15V output model of this series: rated power 8W, typical efficiency 86%.
RSDW08 and RDDW08 series are 8W module type DC-DC reliable railway converter with DIP24 package. It features inter-national standard pins, a high efficiency up to 86%, wide working temperature range -40~+85℃, 1.5KVDC I/P-O/P isolation voltage, compliance with EN50155 railway standard, continuous-mode short circuit protection, etc. The models account for different input voltage 9~36V and 18~75V 4:1 wide input range, and various output voltage, 3.3V/5V/12V/15V for single output and ±5V/±12V/±15V 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 EN50155 railway standard
- DIP 24 package with standard pinout
- 4:1 wide input range
- Wide operating temperature range -40 ~ +85℃
- No minimum load required
- Full encapsulated
- Protections: Short circuit (Continuous) / Overload / Over voltage / Input under voltage
- 1.5KVDC I/O isolation
- Remote ON/OFF control
- 3 years warranty
Specifications
INPUT
- INPUT VOLTAGE (RANGE)
- Normal 48V (18 ~ 75V)
- INPUT CURRENT NO LOAD
- 6mA
- INPUT CURRENT FULL LOAD
- 193mA
- VOLTAGE RANGE
- 18~75Vdc
- SURGE VOLTAGE (100ms max.)
- 24Vin models : 50Vdc, 48Vin models : 100Vdc
- FILTER
- Pi type
- PROTECTION (Typ.)
- Fuse recommended. 24Vin models: 3A delay time Type, 48Vin models: 1.5A delay time Type
- INTERNAL POWER DISSIPATION
- 500mW
OUTPUT
- OUTPUT VOLTAGE
- ±15V
- OUTPUT CURRENT
- ±0 ~ 265mA
- EFFICIENCY (Typ.)
- 86%
- CAPACITOR LOAD (MAX.)
- 265μF (each output)
- VOLTAGE ACCURACY
- ±1.5%
- RATED POWER
- 8W
- RIPPLE & NOISENote.2
- 50mVp-p
- LINE REGULATIONNote.3
- ±0.5%
- LOAD REGULATIONNote.4
- Single output models: ±0.5%, Dual output models:±1%
- CROSS REGULATION
- ±5% @ 25%~100% load
- SWITCHING FREQUENCY (min.)
- 100KHz
PROTECTION
- SHORT CIRCUIT
- Protection type : Continuous, automatic recovery
- OVERLOAD
- 120 ~ 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
- 24Vin: 8.8Vdc, 48Vin: 17Vdc
- UNDER VOLTAGE LOCKOUT Shutdown voltage
- 24Vin: 8Vdc, 48Vin: 16Vdc
FUNCTION
- REMOTE CONTROL
- Power ON: R.C. ~ -Vin >3.5~36Vdc or open circuit ; Power OFF: R.C. ~ -Vin <1.2Vdc or short
ENVIRONMENT
- COOLING
- Free-air convection
- WORKING TEMP.
- -40 ~ +85℃ (Refer to "Derating Curve")
- CASE TEMPERATURE
- +100℃ max.
- WORKING HUMIDITY
- 20% ~ 90% RH non-condensing
- STORAGE TEMP., HUMIDITY
- -55 ~ +125℃, 10 ~ 95% RH non-condensing
- TEMP. COEFFICIENT
- 0.03% / ℃ (0 ~ 71℃)
- 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; Mounting: compliance to EN61373(Category 1- Class B)
SAFETY & EMC ( Note.5)
- SAFETY STANDARDS
- EAC TP TC 020/2011(EAC TP TC 004 for 48Vin type only) approved
- WITHSTAND VOLTAGE
- I/P-O/P:1.5KVDC
- ISOLATION RESISTANCE
- I/P-O/P:100M Ohms / 500VDC / 25℃/ 70% RH
- ISOLATION CAPACITANCE (Typ.)
- 1000pF
- EMC EMISSION
-
Parameter Standard Test Level Conducted BS EN/EN55032 Class A/B with external components Radiated BS EN/EN55032 N/A - EMC IMMUNITY
-
Parameter Standard Test Level ESD BS EN/EN61000-4-2 Level 2, ±8KV air, ±4KV contact Radiated Susceptibility BS EN/EN61000-4-3 Level 2, 3V/m EFT/Bursts BS EN/EN61000-4-4 Level 1, 0.5KV Surge BS EN/EN61000-4-5 Level 1, 0.5KV Line-Line Conducted BS EN/EN61000-4-6 Level 2, 3V(e.m.f.) - RAILWAY STANDARD
- EN50155 including EN61373 for shock & vibration, EN50121-3-2 for EMC
OTHERS
- MTBF
- Single: 1500Khrs, Dual: 1300Khrs MIL-HDBK-217F(25℃)
- DIMENSION (L*W*H)
- 31.8*20.3*10.2mm (1.25*0.8*0.4 inch)
- CASE MATERIAL
- Black coated copper with non-conductive base
- PACKING
- 18.4g ; 10pcs/per tube, 700pcs/70 tube/per carton
Test conditions and notes5
- 1.All parameters are specified at normal input(F:24Vdc, G:48Vdc), 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 10% to 100% rated load.
- 5.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
Certificates3
Test reports1
FAQ
Can I use the RDDW08G-15 for industrial analog or instrumentation circuits that need split rails?
It is a fit for industrial analog or instrumentation circuits that require a dual ±15V output and remain within an 8W budget. This model is a constant-voltage DC-DC converter with an 18-75VDC input range. Its small 31.8 × 20.3 × 10.2 mm size also suits compact control assemblies.
Is the RDDW08G-15 suitable for embedded systems that need ±15V power in a small footprint?
Yes, for embedded systems that specifically need ±15V rails and do not exceed 8W, this model is a practical match. The converter is listed at 31.8 × 20.3 × 10.2 mm and 0.0184 kg, which helps in tightly packed boards or modules. The dual-output feature aligns with split-supply embedded designs.
Can this model be used in factory automation electronics with a wide input range?
It can be used where the available input falls within 18-75VDC and the downstream electronics need constant ±15V output. That makes it relevant for automation electronics built around wide-input power conditions. The output power is 8W, so load demand must stay inside that rating.
Is the RDDW08G-15 rated for outdoor use or exposed environments?
The provided specs show an operating temperature range of -40°C to +85°C and note 2G vibration resistance. Those figures support demanding temperature and vibration conditions, but no IP rating is listed. Without an IP rating in the specs, outdoor exposure suitability is not confirmed.
What is the difference between the RDDW08G-15 and the other RDDW08G versions?
The listed RDDW08G siblings all share an 8W rating but differ in output. The RDDW08G-05 is ±5V with ±800mA output current, the RDDW08G-12 is ±12V with ±333mA output current, and the RDDW08G-15 is ±15V with ±265mA output current. This model keeps the same compact 31.8 × 20.3 × 10.2 mm form factor shown in its specs.
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