What this product is
Architecturally, the HD4850-2 incorporates a dual-stage power electronic conversion circuit. The input stage utilizes a continuous conduction mode (CCM) boost PFC circuit that handles wide AC mains variations from 90V AC to 290V AC while elevating the power factor up to 0.99. The secondary stage utilizes a high-frequency isolated phase-shifted full-bridge DC-DC converter regulating the isolated -48V DC bus. An integrated autonomous load-share controller, embedded MCU, and backplane blind-mate connector allow fully digitized real-time telemetry, remote management, and seamless N+1 redundancy.
What problem it solves
Eliminates network downtime caused by rural grid instabilities, high-voltage surges, and severe AC sags (90V–176V AC) that burn out standard industrial power units. It resolves switching thermal runaway risks through advanced thermal foldback protection and prevents current circulation imbalances across multi-module parallel banks, thereby eliminating battery degradation caused by float-voltage instability.
Who and where it is for
Ideal for telecom macro base stations, wireless radio access networks (RAN), optical transmission nodes, central switching offices, enterprise private networks, and industrial rail transport DC distribution racks requiring stable -48V DC power.
