White Paper Overview

Used in industrial tools, autonomous material handling, and outdoor equipment, lithium battery-powered systems require fast, efficient, and compact charging solutions that can handle wide input voltages and harsh environments. This white paper explores the challenges of designing such chargers and reviews various power topologies—such as boost PFC, totem pole PFC, half-bridge, and full-bridge LLC, and dual active bridge—with a focus on maximizing performance and reliability using Silicon Carbide (SiC) technology.

Download this white paper to learn how onsemi’s 650 V M3S EliteSiC MOSFETs optimize both Power Factor Correction (PFC) and isolated DC-DC stages. The paper details their superior switching performance, reduced power losses, and high-frequency capability, enabling high-density, passively cooled designs for charger applications ranging from 600 W to over 12 kW. Specific device recommendations are provided based on topology type and power level, including integrated solutions using GaN and advanced MOSFETs.

The paper also introduces design tools like the onsemi Elite Power Simulator and Self-Service PLECS Model Generator, which allow engineers to model topologies, simulate real-world conditions, and accelerate development. With accurate SPICE models and a growing passive component database, these platforms help engineers fine-tune charger systems for applications in construction, logistics, and industrial automation. Discover how advanced power devices and simulation tools from onsemi streamline charger design and enable efficient, scalable energy solutions.