The 12V to 28V series highly efficient switch mode step-up DC-DC converter is expertly engineered to deliver reliable power transformation for demanding vehicular, industrial, and commercial applications. Designed to convert a nominal input voltage of 12 VDC (with a flexible operational range spanning from 10 VDC to 23 VDC depending on the specific model) into a highly regulated and stable output voltage of 28 VDC, this series ensures optimal performance for your critical equipment. These DC-DC converters feature a non-isolated design, meaning there is no galvanic isolation between the input and output. As a result, they are specifically meant for use in negative ground systems. By providing a consistent 28V power supply from a standard 12V battery source, these converters eliminate voltage fluctuation risks, ensuring that sensitive electronics operate smoothly. Whether you are upgrading automotive electronics, equipping specialized utility vehicles, or powering heavy-duty machinery, this series provides a dependable, high-performance power solution that meets stringent industry standards.
Core Advantages & Technical Features
Exceptional Conversion Efficiency: Achieving up to 96% efficiency (at 12V input), these converters minimize energy loss and significantly reduce heat generation. This high efficiency translates to lower thermal stress on components, ensuring stable, continuous long-term operation and reducing the need for additional cooling mechanisms.
Premium Internal Components: Built with high-reliability NCC and NICHICON internal capacitors, the circuitry is designed to withstand rigorous operational demands. Utilizing these industry-leading components significantly extends the product's lifespan, enhances overall stability, and helps procurement teams lower long-term replacement and maintenance costs.
Rugged IP68 Waterproof Rating: Encased in a durable, fully sealed housing, the converters achieve a strict IP68 waterproof level. This robust construction effectively protects the sensitive internal electronics from water ingress, heavy dust, and moisture, making them perfectly suited for harsh outdoor environments or applications exposed to the elements.
Comprehensive Protection Mechanisms: Operational safety is prioritized with built-in intelligent safeguards. The converters feature automatic over-voltage, over-load, and over-temperature protections. These critical mechanisms prevent potential damage to both the converter itself and the connected high-value equipment during unexpected electrical surges or extreme thermal conditions, thereby minimizing operational downtime.
Strict Quality Assurance: To guarantee field reliability, every single unit undergoes a rigorous 100% full load burn-in test prior to shipment. Combined with a design meeting CE and ROHS compliance, purchasers can be fully confident in the consistent quality, safety, and environmental responsibility of the product.
Comprehensive Model Specifications
To accommodate a wide range of power requirements, our 12VDC to 28VDC step-up converter series includes multiple models with output currents ranging from 3 Amps up to 40 Amps (rated power from 84W to 1120W). The detailed comparison table below provides essential parameters—including precise input voltage ranges, rated power, efficiency percentages, and physical dimensions. This comprehensive data is provided to assist engineers and procurement specialists in selecting the exact specification needed to match their specific project loads and installation space constraints.
| Model No. | Input voltage | Output voltage | Output current | Rated power | Efficiency | Size |
| SDS-12S2803 | 10-23VDC | 28VDC | 3 Amps | 84W | 95.20% | 64*57*22mm |
| SDS-12S2805 | 10-20VDC | 28VDC | 5 Amps | 140W | 93% | 74*74*32mm |
| SDS-12S2810 | 10-20VDC | 28VDC | 10 Amps | 280W | 96% | 74*74*32mm |
| SDS-12S2815 | 10-20VDC | 28VDC | 15 Amps | 420W | 96.50% | 100*80*39mm |
| SDS-12S2825M | 10-20VDC | 28VDC | 25 Amps | 700W | 95.70% | 140*120*42.5mm |
| SDS-12S2830 | 10-16VDC | 28VDC | 30 Amps | 840W | 96% | 150*127*63mm |
| SDS-12S2840 | 10-16VDC | 28VDC | 40 Amps | 1120W | 95% | 220*127*63mm |
Versatile Application Scenarios
Engineered for versatility and resilience, these non-isolated step-up converters are suitable for a broad spectrum of demanding applications. They are widely utilized in electromotor systems, telecommunications infrastructure, logging vehicles, and forklifts. In logging vehicles and forklifts, the converters reliably power auxiliary equipment despite intense vibrations and fluctuating battery inputs. For telecommunications, they ensure a steady 28V supply crucial for uninterrupted signal transmission. The combination of a rugged waterproof exterior, compact footprint, and high-efficiency power delivery makes them an excellent choice for any vehicular or industrial environment where dependable power conversion is non-negotiable.
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