Allegro MicroSystems, LLC Announces a New High-Voltage (600 V) BLDC MOSFET Gate Driver IC

Designed for Hybrid, Electric Vehicle and 48 V Applications

August 8, 2013

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Worcester, MA – Allegro MicroSystems, LLC announces the release of a new high-voltage (600 V), BLDC MOSFET gate driver IC.  This new device is designed for high voltage motor control for Hybrid, Electric Vehicle and 48 V automotive battery systems such as electronic power steering, A/C compressors, fans, pumps and blowers. The A4900 will also be offered in a non-automotive version for high voltage industrial and commercial applications. 

Allegro’s A4900 provides six gate drives capable of driving a wide range of N-channel IGBT or power MOSFET switches. The gate drives are configured as three high-voltage high-side drives and three low-side drives. The high-side drives are isolated up to 600 V to allow operation with high bridge (motor) supply voltages. Highside drives use a bootstrap capacitor to provide greater than the supply gate drive voltage needed for N-channel FET’s.  Each FET can be controlled with a TTL logic level input compatible with 3.3 V or 5 V logic systems. 

A single supply input provides the gate drive supply and the bootstrap capacitor charge source.  An internal regulator from the single supply provides the lower internal voltage for the logic circuit. The A4900 provides internal monitors to ensure that the gate-source voltage of both high-side and low-side external FET above 9 V when active.

The control inputs to the A4900 provide a very flexible solution for many motor control applications. Each driver can be driven with an independent PWM signal allowing implementation of all motor excitation methods including trapezoidal and sinusoidal drive.  Integrated diagnostics provide indication of under voltage, over temperature and power bridge faults that can be configured to protect the power switches under most short circuit conditions. Detailed diagnostics are available as a serial data word.

The A4900KLQTR-T is supplied in a 44 lead QSOP (suffix ‘LQ’) package.


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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