"In 12V computing systems, the IRF6610 and IRF6636 chip set is ideal for high density , 15A POL converters that support output voltages from 5V to below 1V," said Faisal Ahmad, Marketing Manager for DC-DC Computing Products at International Rectifier. "For example, a 500kHz POL converter delivering 15A output current at 1.5V achieves greater than 88% efficiency with this chip set."

The IRF6610 features very low gate charge of 10nC, minimizing switching losses for an optimized control FET function. The IRF6636 is a versatile DirectFET power MOSFET with 4.5mOhm device on-resistance and a low gate charge of 18nC, and can be used as either a synchronous FET for 15A applications when coupled with an IRF6610, or a as a control FET when used with the IRF6691 for 35A per phase, multi-phase applications. The IRF6636/IRF6691 chip enables greater density in applications such as POL modules, replacing as many as four thermally enhanced SO-8 MOSFET devices.

Patented DirectFET™ Packaging Technology

International Rectifier's patented DirectFET MOSFET packages present a whole new set of design advantages not previously delivered by standard plastic discrete packages. Their metal can construction enables dual-side cooling that effectively doubles the current handling capacity of high frequency DC-DC buck converters powering advanced microprocessors. In addition, devices in the DirectFET package are compliant with the Restriction of Hazardous Substances Directive (RoHS).