DirectFET® MOSFET: Electrical Engineer

DirectFET MOSFETs for Higher Power Density


Application examples

(1) 2-phase Sync Buck POL regulator
VIN = 12V, VOUT = 2.5V, 30A
(2) Half Bridge Converter With Sync Rectification (220W)
Power Efficiency: 96%
Power Density: 129.4 W/in2

(3) Typical Class D Audio Amplifier Performance using DirectFET
(4) Active OR’ing Demo Board (300W)


Synchronous Buck Regulator Example


Side View of Current Flow with Control FET On


Side View of Current Flow with Sync FET On

Click here for more information.

Suggested PAD numbering

If pad numbering is required to produce a component outline within the library of a CAD system, International Rectifier recommends 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

Package Inductance vs. Frequency


Note: DirectFET device includes copper slug. All packages include inductance of tracks under package

DirectFET MOSFET Outlines

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

Click here for more information.
IR’s proprietary DirectFET®; technology is covered by US Patent 6,624,522 and other US and foreign pending patent applications.