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Mean Well DDRH-45-48ST Ultra Wide Input DC-DC Converter, 45W 48V, S...
Overview
DDRH-45-48ST is the 48V output model of this series: rated power 45W, typical efficiency 86%.
DDRH-45 series is a 150 ~ 1500Vdc high reliable ultra-high input DC-DC converter which can supply stable working voltage for the load. Main features are as following: compact size, -40~+80℃ wide range operating temperature, 4KVac high isolation voltage, operation at 5000m altitude, low ripple & noise, complete protections and so on. Futhermore, this series also has DIN Rail type, it is suitable to be mounted on TS-35/7.5 or TS-35/15 rails. DDRH-45 is designed to meet UL1741and IEC62109-1 standard. It is suitable for industrial automation, surveillance, telecommunication and can be widely deployed in the applications of new energy generation such as solar power, and windmill power generation, for instances, photovoltaic power systems, high voltage inverting , DC bus centralized application , ESS, charging pile, railway and so forth.
Features
- 150~1500Vdc 10:1 ultra-wide input range
- 4KVac I/O high isolation(Reinforced isolation)
- Protections: Short circuit / Overload / Over voltage / DC input under voltage / DC input reverse Polarity
- Fanless design, fully encapsulated, cooling by free air convection
- Can be installed on DIN rail TS-35/7.5 or 15 (DR-Type)
- -40~+80℃ ultra-wide operating temperature (＞+50℃ derating)
- Operating altitude up to 5000 meters
- 3 years warranty
Specifications
INPUT
- INPUT VOLTAGE (RANGE)
- Nominal 800Vdc (150~1500Vdc)
- INPUT CURRENT NO LOAD
- 0.2mA
- INPUT CURRENT FULL LOAD
- 75mA
- VOLTAGE RANGE
- 150 ~ 1500Vdc
- FILTER
- Internal capacitor
- EXTERNAL INPUT FUSE
- 4A/1500Vdc, required (Please refer to page 6 for more details)
- INRUSH CURRENT (Typ.)
- Cold start 150A max. @ Vin=800Vdc
OUTPUT
- OUTPUT VOLTAGE
- 48V
- OUTPUT CURRENT
- 0.938A
- EFFICIENCY (Typ.)
- 86%
- CAPACITOR LOAD (MAX.)
- 938μF
- VOLTAGE ACCURACY
- ±2.0%
- RATED POWER
- 45W
- RIPPLE & NOISENote.2
- 12 ~ 24Vo: 100mVp-p 48Vo: 150mVp-p
- LINE REGULATION
- ±1%
- LOAD REGULATION
- ±1% (10% Load to Full Load)
- SWITCHING FREQUENCY (Typ.)
- 28 ~ 75.6KHz
- HOLD UP TIME
- 20ms min. @Vin=800Vdc
- SETUP TIME
- 2s max. @150~1500Vdc
PROTECTION
- SHORT CIRCUIT
- Protection type : Hiccup mode, continuous, automatic recovery
- OVERLOAD
- 110 ~ 300% rated output power Protection type : Hiccup mode, recovers automatically after fault condition is removed
- OVER VOLTAGE
- Hiccup mode, recovers automatically after fault condition is removed
- DC INPUT REVERSE POLARITY
- By internal Bridge Diode, no damage, recovers automatically after fault condition removed
- DC INPUT UNDER VOLTAGE LOCKOUT Start-up voltage
- 132Vdc
- DC INPUT UNDER VOLTAGE LOCKOUT Shutdown voltage
- 121Vdc
ENVIRONMENT
- WORKING TEMP.
- -40 ~ +80℃ (Refer to "Derating Curve")
- WORKING HUMIDITY
- 20% ~ 90% RH non-condensing
- STORAGE TEMP., HUMIDITY
- -40 ~ +85℃, 10 ~ 95% RH non-condensing
- TEMP. COEFFICIENT
- ±0.02% / ℃ (-40℃ ~ 50℃) Typ.
- VIBRATION
- Meets: MIL.STD-810F Table 514.5C-VⅢ, 15-2000Hz, X,Y,Z axis, 1hr (each axis), total 3hrs
- OPERATING ALTITUDENote.3
- 5000 meters
- OVER VOLTAGE CATEGORY
- Ⅱ; According to EN62109-1; altitude up to 5000 meters
SAFETY & EMC (Note.4)
- SAFETY STANDARDS
- UL1741 , CSA C22.2 No.107.1-16 , IEC62109-1 (LVD), EAC TP TC 004 approved
- WITHSTAND VOLTAGE
- I/P-O/P:4KVac
- ISOLATION RESISTANCE
- I/P-O/P, 100M Ohms / 500VDC / 25℃/ 70% RH
- EMC EMISSION
-
Parameter Standard Test Level Conducted BS EN/EN55032 Class A (with external components) Radiated BS EN/EN55032 Class A (with external components) - EMC IMMUNITY
-
BS EN/EN55035
Parameter Standard Test Level ESD BS EN/EN61000-4-2 Level 3, 8KV air; Level 2, 4KV contact, criteria A Radiated Susceptibility BS EN/EN61000-4-3 Level 3, 10V, criteria A EFT/Bursts BS EN/EN61000-4-4 Level 2, 0.5KV, criteria A Surge BS EN/EN61000-4-5 Level 4, 2KV/Vin+ ~ Vin-, criteria A Conducted BS EN/EN61000-4-6 Level 3, 10V, criteria A
OTHERS
- MTBF
- 316Khrs MIL-HDBK-217F(25℃)
- DIMENSION (L*W*H)
- P Type: 89*63.5*25mm, ST Type: 135*70*32mm, DR Type: 135*70*43.5mm
- CASE MATERIAL
- Non-conductive black plastic (UL 94V-0 rated)
- POTTING MATERIAL
- UL 94V-0
- PIN MATERIAL
- Base: copper, Plating: Matte Tin
- PACKING
- P Type : 240g ; 6pcs/Tray, 18pcs/per carton ST Type : 305g ; 6pcs/Tray, 18pcs/per carton DR Type : 310g ; 6pcs/Tray, 18pcs/per carton
Test conditions and notes4
- 1. All parameters NOT specially mentioned are measured at 800Vdc input, rated load and 25℃ of ambient temperature.
- 2. Ripple & noise are measured at 20MHz of bandwidth by using a 12" twisted pair-wire terminated with a 0.1μf & 47μf parallel capacitor.
- 3. The ambient temperature derating of 3.5℃/1000m with fanless models and of 5℃/1000m with fan models for operating altitude higher than 2000m(6500ft).
- 4. The power supply is considered a component which will be installed into a final equipment. The final equipment must be re-confirmed that it still meets 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
- Photovoltaic power generation
- Renewable Energy System
- High voltage frequency conversion
- Industrial control system
- Semiconductor fabrication equipment
- Electro-mechanical apparatus
- DC bus centralized application
- Energy storage system(ESS)
- Charging pile
- Third rail
Downloads
Datasheet1
FAQ
Can the DDRH-45-48ST power 48V relay coils and solenoid valves in industrial control panels wired with high-voltage DC?
Yes. The 48V, 0.94A (45W) screw terminal output is appropriate for driving 48V relay coils and solenoid valves in control panels that distribute power from a high-voltage DC bus. The screw terminal connections suit standard panel wiring practice.
Is the DDRH-45-48ST suitable for use in railway or rolling stock DC applications with variable bus voltages?
The 150–1500VDC ultra-wide input covers 600V and 750V DC bus voltages, and the unit is rated –40°C to +80°C (with derating) and to MIL-STD-810F vibration. The sheet lists no railway-specific standards, so verify compliance for rolling-stock use.
Can the DDRH-45-48ST be used to power 48V battery chargers or maintenance circuits in energy storage systems?
It can power 48V charger control or maintenance electronics that accept a 48V input, within the 0.94A (45W) limit. It is a fixed 48V (±2%) constant-voltage converter, not a battery charger, so it is not suited to charging 48V battery banks directly.
What installation environments are suitable for the DDRH-45-48ST given its temperature rating?
With an operating range of –40°C to +80°C (with derating per the derating curve), the DDRH-45-48ST suits environments with temperature extremes, such as cold storage or enclosed outdoor cabinets. No IP rating is given, so the enclosure must protect it from dust and moisture and keep humidity within 20–90% RH non-condensing.
How does the DDRH-45-48ST compare to the DDRH-45-48DR and DDRH-45-48P?
All three models deliver 48V at 0.94A (45W) with the same 150–1500VDC ultra-wide input range. The ST version uses screw terminals for direct panel wiring, the DR version mounts on a DIN rail, and the P version mounts on a PCB.
Is the DDRH-45-48ST appropriate for supplying 48V to industrial Ethernet media converters or managed switches?
Yes. The regulated 48V, 45W output suits managed Ethernet switches and media converters that accept 48VDC input, particularly in environments where the input source is a high-voltage DC bus requiring step-down conversion.
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