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Mean Well DDRH-45-12P Ultra Wide Input DC-DC Converter, 45W 12V, PCB Type
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Mean Well DDRH-45-12P Ultra Wide Input DC-DC Converter, 45W 12V, PC...
The DDRH-45 is a 45W high-reliability ultra-wide input DC-DC converter designed for photovoltaic, renewable energy storage, and demanding high-voltage industrial systems. Supporting a 150~1500Vdc input range, it adapts to solar, battery string, and DC bus supply sources. With 4KVac reinforced I/O isolation, fanless free air convection cooling, and no minimum load requirement, the DDRH-45 offers reliable power conversion across a -40~+80°C operating range.
Key Features
- ✓ Ultra-wide 150~1500Vdc input range — covers solar, ESS, and DC bus sources
- ✓ DC output voltage adjustable ±10%
- ✓ 4KVac reinforced I/O isolation
- ✓ Cooling by free air convection — fanless design, no minimum load required
- ✓ Wide operating temperature: -40°C ~ +80°C
- ✓ Protections: Short circuit / Overload / Over voltage / Reverse polarity / Under voltage lockout
- ✓ DIN rail TS-35/7.5 or 15 compatible (DR type)
- ✓ Safety approvals: IEC62109-1 (LVD), EAC TP TC 004
- ✓ 3 years warranty
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BrandMean Well
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SeriesDDRH Series
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Power Rating45 Watt
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Output Voltage12 Volt
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Rated Current3.75 Ampere
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Input Voltage150V~1500V
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No of Output1
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Dimming ControlNone
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Standards MetCE,EAC
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Operation ModeConstant Voltage
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Operating Temperature-40°C~80°C
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Warranty3 Year
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Length3.5 in
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Width2.5 in
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Height0.98 in
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Weight0.53 lb
::specification::
Frequently Asked Questions
Can I use the DDRH-45-12P to power embedded computing modules from a high-voltage DC bus?
Yes. The PCB-mount format and 150–1500VDC ultra-wide input allow the DDRH-45-12P to be integrated directly onto a custom board or inside enclosures fed from a high-voltage bus. It supplies 12V at 3.75A (45W) for embedded processors, SBCs, and similar loads.
Is the DDRH-45-12P appropriate for use in down-hole instrumentation or remote telecom equipment?
The –40°C to +80°C operating range and fanless design suit harsh remote installations where ambient temperatures are extreme and maintenance access is limited. The 12V, 45W output can power modems, data loggers, and sensor electronics.
Can this PCB-type converter be used in a regenerative drive cabinet where bus voltage spikes above 1000VDC?
The DDRH-45-12P is rated up to 1500VDC input, which covers transient bus voltages in many regenerative drive and motor braking applications. Verify that peak transients stay within the 1500VDC maximum to ensure reliable operation.
What mounting and integration options does the DDRH-45-12P offer compared to other DDRH-45-12 variants?
The DDRH-45-12P is a PCB-type module measuring 89×63.5×25 mm and weighing 0.24 kg—the most compact option in the trio. The DDRH-45-12DR (135×70×43.5 mm) snaps onto a DIN rail, and the DDRH-45-12ST (135×70×32 mm) uses screw terminals. All three deliver 45W at 12V, 3.75A.
Does the DDRH-45-12P require any special thermal management in a sealed enclosure?
The fanless design eliminates moving parts and relies on convection cooling. In a sealed enclosure, derate the output or ensure adequate thermal conductivity through the enclosure walls to maintain the case temperature within the –40°C to +80°C operating range.
Can the DDRH-45-12P operate in arctic or high-altitude environments?
The –40°C low-temperature rating makes the DDRH-45-12P suitable for arctic-condition deployments. Because no IP rating is specified, the unit must be housed in an appropriately rated enclosure when deployed outdoors or in high-humidity environments.
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