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48V non-isolated PMbus DC-DC converter for compute and telecoms

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By Nick Flaherty


Advanced Energy Industries has launched its first non-isolated bus DC-DC converter (NIBC) for 48V power conversion in compute and telecom applications.

Operating at up to 900 W with efficiencies as high as 97%, the quarter brick Artesyn NDQ900 DC-DC converter provides a single, regulated 12.25 V output and incorporates a PMBus digital interface for flexible digital control and monitoring.

The NDQ900 NIBC has a wide 40 V to 60 V DC input range and is aimed at high-power computing, networking, telecommunications, data storage and test and measurement applications requiring a regulated 48 V to 12 V bus conversion. A flat efficiency curve ensures that the quarter-brick module delivers optimum power conversion performance for a wide range of loads.

“The combination of ultra-high-efficiency operation, thermally optimized design and digital control addresses the growing demand for 48 V power conversion solutions in data centre and enterprise computing systems,” said Joe Voyles, vice president of marketing, industrial power conversion products at Advanced Energy. 

The quarter brick DC-DC converter is built around a baseplate construction that serves to improve thermal management and simplifies attachment of a heatsink. With forced air cooling, the module can deliver full power over an operating temperature range of -40 °C ~ +85° C.

The NDQ900 is a fixed-frequency converter with no minimum load requirement. It features an active current sharing capability that facilitates the connection of multiple power supplies in parallel for applications requiring higher load current or redundancy. In addition to PMBus connectivity, the module offers a remote-control function and a power good signal. 

The DC-DC converter is approved to all international safety standards and includes integrated under-voltage lockout (UVLO) function and protection against over-current, over-voltage and over-temperature conditions. Advanced Energy supplies the module with a two-year warranty as standard.

www.artesyn.com/power-supplies/websheet/667/ndq900-series


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