Such box type DCDC converter, a wide input voltage range of 18~60V, can provide 300W, regulated DC output voltage with high efficiency; The power module offers input UVLO, output over current limit, short circuit, output over voltage, over temperature, and input reverse. Such box type DCDC converter, a wide input voltage range of 18~60V, can provide 300W, regulated DC output voltage with high efficiency; The power module offers input UVLO, output over current limit, short circuit, output over voltage, over temperature, and input reverse. What is a high voltage box? The High Voltage Power Box combines the functionality of an Onboard Charger (OBC), a DC/DC converter and a PDU (Power Distribution Unit). The OBC is the interface between the car and the public grid. It converts the energy from the network grid AC (Alternative Current). © 2026 Delta Electronics, Inc. The electrification of commercial vehicles and non-road mobile machinery has picked up considerable speed in recent years. On the conventional, mostly diesel-driven side, the rise of sub-systems such as supercaps, electric power steering or e-compressors. A critical evolution in this domain is the integration of high-voltage (HV) to low-voltage (LV) DCDC converters within the OBC, enabling a unified power delivery architecture that serves both traction battery charging and auxiliary power needs. Engineered for top-tier power conversion efficiency and remarkable power density, our chargers cover a broad power spectrum, ranging from 3. 3 kW. HUBER+SUHNER's modular High Voltage Distribution Unit (mHVDU 800) can be tailored to customer specifications with a short lead time, helping OEMs bring new electric vehicles to market faster while maintaining high quality.