Quarter Brick DC/DC converter provides high efficiency

9th November 2017
Anna Flockett

The ADQ800 series has been announced by Artesyn Embedded Technologies, as a new 800W quarter-brick isolated DC/DC converter with the high efficiency and thermal performance demanded by telecom network and data centre equipment. Capable of delivering up to 70A output current with a single fully regulated 11.8V output, the converters have no minimum load requirement.

The ADQ800 series has an input voltage range of 40 to 60V and is primarily designed for use with standard 48V supplies in computing and server applications, as well as regulated 48V supplies in telecom equipment. An ultra-high efficiency of typically 96% at full load and the ability to operate over an ambient temperature range of minus -40 to 85°C, makes them a suitable choice for the isolated converter in a distributed power architecture supplying power to non-isolated converters.

Their design is optimised for forced air or conduction cooling and an aluminum baseplate option is available for enhanced thermal performance. The conversion technology employs 175kHz fixed frequency switching to help minimise external EMI filtering requirements.

The converters are comprehensively protected against output overvoltage, output overcurrent and overtemperature conditions. ADQ800 series converters have an enhanced pre-bias start-up capability and, for high current applications, two converters can be connected in parallel, automatically using the droop method of current sharing and have an enable function to facilitate sequenced startup control of the unit. 

Artesyn ADQ800 series converters are low profile units that are ideal for systems with demanding inter-board spacing requirements; the baseplate models have an installed height of 0.53” (13.6mm).

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