Power block devices deliver power density
06 August 2013
International Rectifier announced the first of a family of Power Block devices for DC-DC synchronous buck applications
International Rectifier announced the first of a family of Power Block devices for DC-DC synchronous buck applications
These applications include advanced telecom and netcom equipment, servers, graphic cards, desktop, Ultrabook and notebook computers.
The 25V IRFH4251D and IRFH4253D feature IR’s latest generation silicon in a novel package that delivers benchmark power density in a 5x6 mm PQFN. The new Power Block devices feature an integrated monolithic FETKY, and innovative package employing a leading-edge flipped-die technology that enables efficient dissipation of the heat from the source of the synchronous MOSFET directly to the ground layers of the PCB. As a result of improved thermal performance and increased power density, one of the new 5x6 dual devices may replace two 5x6 standard single devices. The new package also utilises IR’s proprietary single copper clip already employed in PowIRStage and SupIRBuck products, as well as an optimised layout that significantly reduces stray inductance to lower peak ringing. This allows the designer the option to use 25V MOSFETs in place of less efficient 30V devices.
Optimised for 5V gate drive applications, the IRFH4251D and IRFH4253D work with any controller or driver to offer design flexibility while delivering higher current, efficiency and frequency capability in a small footprint compared to alternative approaches using two discrete 30V power MOSFETs.
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