IR Intros IRF6610/IRF6636 DirectFET MOSFET Chip Set
International Rectifier Corp. (IR, El Segundo, CA) introduced a new 20 V DirectFET™ MOSFET synchronous buck converter chip set, the IRF6610 and IRF6636 MOSFET pair, which has performance similar to a pair of SO-8 MOSFETs with a 40-percent size reduction. The chip set is designed for high-frequency, point-of-load (POL) designs where size, efficiency, and thermal performance are critical design considerations.
The IRF6610 features a low gate charge of 10 nC, minimizing switching losses for an optimized control FET function. The IRF6636 is a versatile DirectFET power MOSFET with 4.5 mΩ device on-resistance and a low gate charge of 18 nC, and can be used as either a synchronous FET for 15 A applications when coupled with an IRF6610, or as a control FET when used with the IRF6691 for 35 A per-phase, multi-phase applications. The IRF6636/IRF6691 chip set enables greater density in applications such as POL modules, replacing as many as four thermally enhanced, SO-8 MOSFET devices.
Devices in the DirectFET package are compliant with the Restriction of Hazardous Substances Directive. The new IRF6636 and IRF6610 DirectFET MOSFET, synchronous buck chip set is now available. Pricing is $0.88 each for the IRF6636 and $0.70 each for the IRF6610, each in 10,000-unit quantities. Prices are subject to change.
