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Mean Well DDRH-45-48P Ultra Wide Input DC-DC Converter, 45W 48V, PCB Type
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Mean Well DDRH-45-48P Ultra Wide Input DC-DC Converter, 45W 48V, 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 Voltage48 Volt
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Rated Current0.93 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 the DDRH-45-48P be embedded in custom PCB assemblies requiring a 48V regulated supply from a high-voltage DC source?
Yes. The PCB mount form factor is designed for direct board integration. It converts 150–1500VDC input to a regulated 48V, 0.94A (45W) output, making it suitable for embedded designs that draw from high-voltage DC rails.
Is the DDRH-45-48P suitable for powering 48V Class 2 PoE ports in custom industrial Ethernet hardware?
The 45W, 48V output can supply individual 48V PoE ports or small PoE injectors in custom hardware designs. At 0.94A, it supports loads up to 45W on the 48V rail.
Can the DDRH-45-48P operate across the full input range in high-altitude or low-pressure environments?
The DDRH-45-48P is rated for –40°C to +80°C operation. The CE certification covers standard operating conditions; consult Mean Well's derating guidelines for deployments at altitudes above 2000m where convection cooling is reduced.
How does the DDRH-45-48P differ from the DDRH-45-48DR and DDRH-45-48ST?
All three share the same 48V, 0.94A (45W) output and 150–1500VDC input. The P model mounts directly onto a PCB, making it ideal for embedded applications; the DR is DIN rail mounted; and the ST uses screw terminals for panel wiring.
Can the DDRH-45-48P supply power to 48V brushless DC cooling fans in an industrial computing chassis?
Yes. At 48V and up to 0.94A, the DDRH-45-48P can power 48V BLDC fans used in industrial server chassis or compute enclosures, provided total fan current stays within the 0.94A rating.
Is the DDRH-45-48P rated for use in sealed or conformal-coated PCB assemblies exposed to humidity?
The product holds CE and EAC certifications. No IP rating is specified for the PCB unit itself; if moisture protection is required, the surrounding PCB assembly or enclosure should provide the necessary environmental sealing.
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