260W DC-DC converter fits into a sixteenth-brick footprint 

February 05, 2019 //By Nick Flaherty
260W DC-DC converter fits into a sixteenth-brick footprint 
Flex Power Modules has launched a DC-DC converter in the sixteenth-brick form factor that can provide output power up to 260W at an output voltage of 10.4V, which Flex claims is the industry's smallest.

The PKU4217D is an isolated intermediate bus converter (IBC) for supplying point-of-load (PoL) regulators and is intended to replace eighth-brick converters, saving 40% in space requirements. 
The power density comes from using the Flex Hybrid Regulated Ratio HRR technology for the first time in a sixteenth-brick module. This increased the output power achievable by around 60W and means it is aimed at telecoms and datacom applications that require high power in a small footprint. 

The converter has an efficiency of typically 96.1% at 48Vin and half load, reducing the cooling requirements and cutting the total cost of ownership (TCO). “Using proven technology based on a patent held by Flex Power Modules, the new PKU4217D is truly at the cutting edge of power density in telecoms and datacom applications – delivering valuable space savings, without compromising on efficiency. We believe the new module will help more customers follow the industry trend of changing from 12V to 10.4V to supply PoLs, which drives further efficiencies,” said Olle Hellgren, Director of Product Management and Business Development at Flex Power Modules. 

The module has an input voltage range of 36V to 60V, and provides isolation of 2250V, also making it suitable for Power over Ethernet (PoE) applications. Power output is up to 25A or 260W, at 10.4Vout.

The PKU4217D is provided in an industry-standard low-profile sixteenth-brick form factor, measuring 33.02 x 22.86 x 11.30mm (1.3 x 0.9 x 0.44in). It is available optionally with a baseplate, or as a surface mounted device (SMD) version. The module meets safety requirements according to IEC/EN/UL 62368-1.

flex.com/sites/default/files/Flex%20TS_PKU4217D.pdf

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