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A5941 - Three-Phase Sensorless Fan Driver

Description

The A5941 three-phase motor driver incorporates sinusoidal drive to minimize audible noise and vibration for mediumpower fans.

A sinusoidal voltage profile is applied to the windings of the motor at startup to quietly start and gradually ramp up the motor to the desired speed.

Features

  • AEC-Q100 qualified (K version).
  • Quiet startup.
  • 180° sinusoidal drive for low audible noise.
  • High-efficiency control algorithm.
  • Sensorless operation.
  • Wide supply voltage range.
  • FG speed output.
  • Lock detection.
  • Overcurrent protection.
  • Soft start.
  • Short-circuit protection.

📥 Download Datasheet

Datasheet preview – A5941

Datasheet Details

Part number A5941
Manufacturer Allegro
File Size 656.49 KB
Description Three-Phase Sensorless Fan Driver
Datasheet download datasheet A5941 Datasheet
Additional preview pages of the A5941 datasheet.

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Full PDF Text Transcription

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A5941 Three-Phase Sensorless Fan Driver FEATURES AND BENEFITS • AEC-Q100 qualified (K version) • Quiet startup • 180° sinusoidal drive for low audible noise • High-efficiency control algorithm • Sensorless operation • Wide supply voltage range • FG speed output • Lock detection • Overcurrent protection • Soft start • Short-circuit protection PACKAGES: 10-Pin SOIC with Exposed Pad (suffix LK) DESCRIPTION The A5941 three-phase motor driver incorporates sinusoidal drive to minimize audible noise and vibration for mediumpower fans. A sinusoidal voltage profile is applied to the windings of the motor at startup to quietly start and gradually ramp up the motor to the desired speed. The voltage profile is set to a default value that will operate for a wide range of motor characteristics.
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