INTERNATIONAL RECTIFIER - THE POWER MANAGEMENT LEADER

DirectFET™ MOSFET: Board Layout Engineer

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Using the Can of the Sync FET instead of PCB Trace
to Connect Control FET to Inductor



Parallel Layout Using Can as Connection

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Synchronous Buck Regulator Example


Side View of Current Flow with Control FET On


Side View of Current Flow with Sync FET On

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Suggested PAD numbering

If pad numbering is required to produce a component outline within the library of a CAD system, we recommend that the convention shown in Fig. 2 is adopted. This makes it easier to discuss any issues that may arise during design and assembly.

Fig. 2: Recommended Pad Numbering

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DirectFET Outlines

The new method of outline identification breaks all devices up into 3 die sizes* within each can.


* Each die size has it’s own specific pad layout. Refer to datasheets for exact dimensions.

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IR’s proprietary DirectFET® technology is covered by US Patent 6,624,522 and other US and foreign pending patent applications.

 
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