The Zhujiang SMPS2004 is an industrial-grade high-frequency switch-mode DC power rectifier module designed to convert standard single-phase AC utility into a highly regulated 48V DC nominal output (adjustable between 42V and 58V DC), delivering a continuous maximum output current of 30A with a rated capacity of 1700W.
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Architecturally, the SMPS2004 utilizes a two-stage conversion platform consisting of a wide-range active PFC boost pre-regulator (PF ≥ 0.99) followed by a high-frequency isolated DC-DC resonant power stage. The internal circuitry incorporates multi-stage EMI filtering compliant with carrier-grade EMC directives and heavy-duty surge suppression. The module interfaces via a blind-mate rear connector featuring staged pin lengths for pre-charge, power buses, autonomous current-sharing signals, and system communication buses to guarantee seamless live hot-swapping.
It mitigates common industrial grid threats such as severe brownouts, voltage sags, and high-energy transients that typically drop standard power supplies offline. Its dynamic power-limiting profile prevents source generator overload during cold starts, while live hot-swap capabilities and autonomous active current sharing eliminate single points of failure, radically reducing system downtime and emergency maintenance costs.
Ideal for telecom operator macro base stations, micro BTS cabinets, optical line terminal (OLT) shelters, power utility DC distribution panels, railway signaling rooms, and rugged industrial 48V DC battery backup systems.
| Key specifications | Value |
|---|---|
| Rated Output Voltage | -48VDC (-42V ~ -58V) |
| Maximum Output Current | 30A |
| Rated Output Power | 1700W |
| AC Input Voltage | 90V AC ~ 290V AC |
| Maximum Efficiency | ≥ 91.5% |
| Operating Temperature Range | -40°C ~ +75°C |
| Cooling System | Forced Air Cooling with Intelligent Speed Fan |
| Hot-Swappable Support | Yes (Live Hot-Pluggable / Plug-and-Play without Power Interruption) |
Zhujiang
Featuring a peak conversion efficiency exceeding 92.0%, the module integrates active power factor correction (APFC), an advanced resonant soft-switching DC-DC topology, and microprocessor-monitored intelligent variable-speed forced-air cooling, ensuring seamless live hot-plugging and active current sharing across parallel power shelves.
Genuine Zhujiang SMPS1002H-I telecom rectifier module engineered for dependable -48V DC power conversion in utility and telecom sites.
Engineered for harsh operating environments, the 4850C achieves peak conversion efficiency greater than 92.5% and a power factor of 0.99 via advanced Active Power Factor Correction (APFC) and resonant topologies. It features forced-air cooling driven by an intelligent variable-speed brushless fan, seamless live hot-swappability, autonomous active current-sharing across parallel units, and robust protection against input line disturbances, voltage surges, and output anomalies.
Achieving a peak efficiency exceeding 94.5%, the 4850N2 combines full digital control topology with an intelligent speed-regulated brushless DC cooling fan for superior power density. Designed for rugged electrical environments, it features active power factor correction (PFC), comprehensive CAN bus communication, and true live hot-plug capability, guaranteeing carrier-grade reliability and exceptionally high MTBF.
