Power Electronics / Power Management


Digitally controlled PSUs

5 October 2016 Power Electronics / Power Management

XP Power announced the nanofleX series of configurable, digitally controlled AC-DC power supplies.

This modular supply is constructed in a compact, low-profile 1U mechanical chassis format that suits today’s space constrained designs, and can accommodate up to four single-slot, plug-in customer selected output voltage modules.

Designed to maximise efficiency and minimise audible fan noise, the nanofleX series can deliver up to 850 Watts from a universal input voltage or up to 1200 Watts from a high line source. Cooling fans are positioned in the centre of the product, further reducing audible noise and allowing users to specify the airflow direction to suit their application. The full output power rating is available regardless of airflow direction.

The four output module slots provide 19 nominal output voltage options in the range +3.3 to +60 V d.c. Outputs are derived from one of four base, digitally controlled module designs, offering a wide voltage adjustment range. This approach provides ultimate flexibility and user adjustment to tailor the product to the end application, minimises individual inventory items and supports fast turnaround delivery of products configured to exact customer requirements in XP’s global configuration centres.

The nanofleX platform supports both analog and digital control. The analog signals include AC OK (global), DC OK (global and local module) in addition to remote on/off (global and local), voltage adjustment, remote sense and current share controls. The digital functions use a subset of the industry standard PMBus command protocol that include digital equivalents of all the analog signals and controls together with over-voltage, over-temperature, over-current and fan fail warning functions.

A Graphical User Interface (GUI) facilitates the control and configuration of the nanofleX via an I²C interface using the PMBus commands, allowing users to interface with the power supply from day one and further refine the nanofleX configuration during the system development phase.



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