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A3986SLDTR

製品説明
仕様・特性

A3986 Dual Full-Bridge MOSFET Driver with Microstepping Translator Features and Benefits Description ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ The A3986 is a dual full-bridge gate driver with integrated microstepping translator suitable for driving a wide range of higher power industrial bipolar 2-phase stepper motors (typically 30 to 500 W). Motor power is provided by external N-channel power MOSFETs at supply voltages from 12 to 50 V. 2-wire step and direction interface Dual full-bridge gate drive for N-channel MOSFETs Operation over 12 to 50 V supply voltage range Synchronous rectification Cross-conduction protection Adjustable mixed decay Integrated sinusoidal DAC current reference Fixed off-time PWM current control Package: 38 pin TSSOP (suffix LD) This device contains two sinusoidal DACs that generate the reference voltage for two separate fixed-off-time PWM current controllers. These provide current regulation for external power MOSFET full-bridges. Motor stepping is controlled by a two-wire step and direction interface, providing complete microstepping control at full-, half-, quarter-, and sixteenth-step resolutions. The fixed-off time regulator has the ability to operate in slow-, mixed-, or fast-decay modes, which results in reduced audible motor noise, increased step accuracy, and reduced power dissipation. The translator is the key to the easy implementation of this IC. Simply inputting one pulse on the STEP input drives the motor one step (full, half, quarter, or sixteenth depending on the microstep select input). There are no phase-sequence tables, high frequency control lines, or complex interfaces to program. This reduces the need for a complex microcontroller. Approximate size Continued on the next page… Typical Application Diagram 3986-DS, Rev. 1

ブランド

ALLEGRO

会社名

Allegro MicroSystems, LLC

事業概要

Allegro MicroSystems, LLC. - Allegro MicroSystems, LLC. は、高性能パワーおよびホール効果センサ集積回路の開発、製造、販売を手掛ける主要企業です。 Allegroの革新的なソリューションは、自動車市場の高成長を続けるアプリケーションに用いられており、オフィスオートメーション、産業用、民生/通信ソリューションにも重点的に取り組んでいます。 Allegroは米国マサチューセッツ州ウォーセスターに本社を置き、また世界各国に設計センター、アプリケーションセンター、販売サポートセンターを配置しています。

供給状況

 
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