Product category: Power Supply ICs and Controllers
News Release from: Allegro MicroSystems Europe | Subject: The A8906CLB
Edited by the Electronicstalk Editorial Team on 13 July 2001
Three-phase motor control
IC has back-EMF sensing
The A8906CLB from Allegro MicroSystems Europe is a bidirectional three-phase brushless DC motor controller/driver integrated circuit with back-EMF sensing
The new device incorporates reliable, self-contained back-EMF sensing motor startup and running algorithms. A programmable digital frequency-locked loop speed control circuit, together with linear current-control circuitry, provides precise motor speed regulation. A serial port allows the user to program various features and modes of operation, such as the speed control parameters, rotational direction, startup current limit, sleep mode and diagnostic modes.
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The circuit includes three half-bridge outputs based on low-on-resistance N-channel DMOS devices, each capable of driving up to 1A.
The A8906CLB is fabricated in Allegro's BCD (bipolar/CMOS/DMOS) process, an advanced mixed-signal technology that combines bipolar, analogue and digital CMOS circuitry with DMOS power devices.
The new circuit is supplied in a 24-lead wide-body SOIC batwing package for surface mounting.
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