Allegro MicroSystems, Inc. Announces New Automotive Grade Three Phase MOSFET Pre-Driver IC

Designed for Automotive Three-Phase Systems

July 26, 2011

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Worcester, MA – Allegro announces a new automotive grade three phase MOSFET pre-driver IC targeted at BLDC motors commonly found in electronic power steering systems, engine cooling fans, transmission actuators and hydraulic pumps. Allegro’s A4933 is primarily targeted at extreme applications where high power, high torque and high temperature combine to require a MOSFET pre-driver that is able to deliver large MOSFET gate drive and switching capabilities.

The A4933 is targeted towards three-phase systems, and in particular, is most often adopted in systems which use sinusoidal control of the motor phase currents. This commutation method provides smooth operation, which reduces audible noise and mini¬mizes torque ripple at the load. Key features include: an integrated charge pump that provides full gate drive for battery voltages (Vbb) down to 7 V and reduced gate drive battery voltages as low as 5.5 V, a top-off charge pump (TOCP) that enables 100% pulse-width-modulation (PWM), an adjustable dead-time that can be regulated by the user, an adjustable drain-to-source monitor (VDSTH), and improved fault diagnostics that enhances the user’s ability to decode and identify faults.

The A4933KJPTR-T is available in a 48L eLQFP small profile, thermally-efficient package with exposed pad.



Sobre Allegro

Allegro Microsystems, LLC es una empresa líder en el desarrollo, fabricación y comercialización de semiconductores de alto rendimiento. Las soluciones innovadoras de Allegro son útiles para aplicaciones de alto crecimiento dentro del mercado de la automoción, con enfoque adicional en la automatización de oficinas, industrial y soluciones de comunicaciones/consumo. Allegro tiene su sede en Worcester, Massachusetts (EE.UU.) con centros de diseño, aplicaciones y de soporte de ventas ubicados en todo el mundo. Más información sobre Allegro se puede encontrar en www.allegromicro.com

Allegro Microsystems Europa, con sede en Chertsey, Reino Unido, es la oficina operativa de ventas y comercialización europea, y opera una red de representantes y distribuidores en toda Europa. Allegro cuenta con centros técnicos y de marketing en Heidelberg y Hinterzarten en Alemania. Allegro también dispone de un centro de ingeniería de diseño en el centro de Edimburgo, en Escocia y un centro técnico y de marketing en Annecy en Francia.


Contactos de marketing:

Allegro MicroSystems Europe Ltd.
Tel: +33 (0) 4 50512359
Fax: +33 (0) 4 505 12083 

Email: allegroeurope@allegromicro.com
www.allegromicro.com

 

 

 

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