New 3kW platinum front-end AC/DC supply targets PoE applications

Aimed at Power over Ethernet (PoE) applications, CUI has announced the expansion of its 3000W front-end AC/DC power supply series with the addition of the PSE-3000-54. The power supply is preset to output 54VDC with a factory-adjustable output from 42V to 55V, making the model also suitable for a wider range of telecom and networking applications. Key features include N+1 redundancy and hot swap blind-docking capability implemented through the use of a single connector that integrates ac, dc and I/O signals. The PSE-3000-54 delivers a power density of 33.48 W/cubic inch and achieves Platinum efficiency (94% efficient at 50% load) in a compact standard 1U package measuring just 40.64mm x 101.6mm x 355.6mm. The main 54VDC output delivers up to 55.5A with droop current sharing for paralleling of multiple units. The output is floating and features isolation of 1500Vrms specifically for PoE applications. For monitoring and control of the module, the PSE-3000-54 features system communications via I2C/PMBus protocol. For maximum flexibility, the series is available in front-to-back or back-to-front airflow configurations depending on the application’s cooling requirements. Additionally, standby outputs of 3.3VDc or 5VDC at 2A are provided. The PSE-3000-54 also offers 60950-1 safety approvals, bears the CE Mark, and complies with all applicable EMC requirements to accommodate world wide applications. Protections for over-voltage, over-current, over-temperature, and input under-voltage are standard. An optional 1U 19-inch power shelf is available to hold up to four power supplies for 12kW parallel operation, 9kW N+1 redundant operation, or dual 6kW 'A' & 'B' output channel operation. The DC output terminal blocks can be configured to be single or dual polarity. Models with a user-adjustable output from 20V to 54V are also available on request, says the company.