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International Rectifier Introduces DirectFET™ MOSFET Chip Set 40% Smaller than S

  EL SEGUNDO, Calif. - International Rectifier, IR® introduced a new 20V DirectFET™ MOSFET synchronous buck converter chip set. The IRF6610 and IRF6636 small can DirectFET MOSFET pair has performance similar to a pair of SO-8 MOSFETs with a 40% 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.

"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.

Part NumberPackageBVDSS(V)RDS(on) max @10V(mOhm)RDS(on) max @4.5V(mOhm)VGS(V)ID @ Tc=25ºC(A)QG typ(nC)QGD typ(nC)
IRF6610DirectFET SQ208.010.0205010.02.0
IRF6636DirectFET ST204.56.42055186.1

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).



Miércoles, 20 Julio, 2005 - 11:00
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