In modern AI and hyperscale datacenters, front‑end power supplies (PSUs) form the backbone of high‑density power delivery. Optimized for efficiency, fast load transients and scalable parallel operation, they convert utility power into stable DC rails while operating reliably under continuous high thermal stress. Designed to work seamlessly with downstream converters and battery backup units (BBUs), advanced front‑end PSUs ensure uninterrupted performance across demanding compute workloads. AI‑focused PSUs are required to support multi‑kilowatt power levels (typically 3-12 kW per unit) while maintaining peak efficiency. At the rack level, this translates to power levels spanning approximately 15-250 kW and rising, reflecting the increasing demands of modern AI infrastructure.