729-48-SD | Galvanically isolated DC/DC buck-boost converter 24 VDC to 48 VDC, 450 W

TL;DR: The powerhouse for your 48V infrastructure. The Demke 729-48-SD efficiently transforms unstable 12V or 24V input voltages into a rock-solid 48V output (95% efficiency). With 450W of power, full galvanic isolation, and a CC/CV charging profile, it is the premier choice for Starlink conversions, charging 48V LiFePO4 batteries, and demanding marine applications. Thanks to its full polyurethane potting, it operates at 100% load even at 85°C without any power derating. The transition from 12V to 48V systems is the key to minimizing line losses and reducing cable cross-sections. The Demke 729-48-SD acts as the essential technological bridge. As an isolated buck-boost converter, it masterfully balances input voltage fluctuations (ranging from 12V to 32V) to deliver a precise and stable 48V output. – Starlink 12V Conversion (V2 & V3): Power your Starlink system directly from your 12V onboard network. By eliminating inefficient AC inverters, you save up to 40% energy—a critical factor for self-sufficient campers and digital nomads. – B2B Charging for 48V Lithium Storage: Utilize your existing 12V alternator to safely recharge large 48V LiFePO4 battery banks while driving. The integrated CC/CV characteristic ensures battery-friendly, precision charging. – Marine & Yacht Electronics: Protect sensitive navigation and communication equipment. The galvanic isolation prevents ground loops and provides effective protection against electrolytic corrosion on the hull. – Industrial Robotics (AGV/AMR): Ensure an interference-free 48V supply for sensors, LiDAR units, and control electronics in autonomous guided vehicles. Unlike standard mass-market converters, the Demke 729-48-SD is built for extreme environments. The electronics are completely encapsulated in polyurethane (PU) potting, making the device entirely vibration-proof and “climate-proof.”