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

Designed for Automotive Three-Phase Systems

July 26, 2011

Product Image

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.



Allegro MicroSystems, LLC は、高性能半導体の開発、製造、マーケティングにおけるリーダーです。Allegro の革新的なソリューションは、自動車などの急成長している分野で広く採用されているほか、オフィス オートメーション、工業、コンシューマー/通信市場でも注目されています。Allegro の本社は米国マサチューセッツ州ウースターにあり、設計、アプリケーション、営業サポートなどの拠点を世界中に展開しています。Allegro の詳細については、www.allegromicro.com をご覧ください。

 


記事に関するお問い合わせ:

Stephanie Fennelly
マーケティング広報担当ディレクター
電話: (508) 854-5363
sfennelly@allegromicro.com
.

Copyright © 2017 Allegro MicroSystems, LLC

サイトマップ  |  個人情報保護に関する方針  |  Web マスターへのお問い合わせ

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