Allegro MicroSystems, Inc. Announces New Programmable Stepper Motor Driver IC

Improved Programmability and Diagnostics

May 8, 2012

Product Image

Worcester, MA – Allegro MicroSystems, Inc. announces a new programmable stepper motor driver IC with improved programmability and diagnostics. The A4979 is a flexible microstepping motor driver with built-in translator for easy operation. It is a single-chip solution, designed to operate bipolar stepper motors in full-, half-, quarter- and sixteenth-step modes, at up to 50 V and 1.5 A. This new device is targeted at the office automation, industrial and consumer markets.

The A4979 can be controlled by simple step and direction inputs, or through the SPI-compatible serial interface. Many of the integrated features as well as diagnostic read back are programmed through the serial port.

The current regulator can be programmed to operate in fixed off-time or fixed frequency PWM, with several decay modes to reduce audible motor noise and increase step accuracy. In addition, phase current tables can be programmed via the serial interface to create unique microstep current profiles to further improve motor performance for specific applications.

Circuit protection includes cross-conduction when switching between high side and low-side drives. The outputs are protected from short circuits. Mixed decay is a key feature integrated within the device to improve low load current accuracy. Other protection includes stall detection and hot and cold thermal warnings, over temperature shutdown, and under voltage lockout.

Allegro’s A4979 is available in a 28-pin TSSOP package (suffix LP) with exposed pad for enhanced thermal dissipation.



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

 

 

 

.

Copyright © 2017 Allegro MicroSystems, LLC

Sitemap  |  Privacy Policy  |  Contact Webmaster

Follow us on: LinkedIn YouTube Google+ Follow Allegro on Twitter

Careers   |   Contact Sales   |   Home   |   Legal   |   Quality & Environment   |   Request Samples