Commercial Cars On-board Charger CPU segmentation by application separates the market into light‑commercial vehicles (LCVs), medium‑duty trucks (MDTs), and heavy‑duty trucks (HDTs). LCVs, which include city vans and small box trucks up to 3.5 t, represent the largest volume segment because they account for the majority of urban delivery fleets; their relatively modest battery capacities keep charger CPU specifications modest, contributing approximately 45 % of total market revenue. MDTs, ranging from 3.5 t to 7 t, require mid‑range power density and more robust thermal management, driving a 35 % share of the market. Their adoption is accelerated by regional logistics operators seeking faster turnaround times. HDTs, exceeding 7 t, demand high‑power, three‑phase charger CPUs capable of handling large battery packs and frequent deep‑cycle charging; they constitute the remaining 20 % of revenue but command higher average selling prices, reflecting the technical complexity of the solutions. The proportional distribution of these application segments directly informs the overall market size, as each vehicle class imposes distinct performance, cost, and reliability criteria on the on‑board charger CPU design.