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A5939 - Three Phase Sinusoidal Fan Controller

Download the A5939 datasheet PDF. This datasheet also covers the A5949 variant, as both devices belong to the same three phase sinusoidal fan controller family and are provided as variant models within a single manufacturer datasheet.

General Description

AEC-Q100 qualified K version Sinusoidal Drive For Low Audible Noise Quiet StartUp

The A5939/A5949 three phase motor controller incorporates sinusoidal drive to minimize audible noise and vibration for high power fans.

📥 Download Datasheet

Note: The manufacturer provides a single datasheet file (A5949-Allegro.pdf) that lists specifications for multiple related part numbers.

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Other Datasheets by Allegro MicroSystems

Part Number Description
A5931 Three-Phase Sensorless Fan Driver
A5931-3 Three-Phase Sensorless Fan Driver
A5932 Three-Phase Sinusoidal Sensorless Fan Controller
A5929 Automotive Full-Bridge MOSFET Driver
A5940 Three Phase Sensorless Sinusoidal Fan Driver

Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

View original datasheet text
A5949/A5939 Three Phase Sinusoidal Fan Controller FEATURES AND BENEFITS DESCRIPTION  AEC-Q100 qualified – K version  Sinusoidal Drive For Low Audible Noise  Quiet StartUp  Proprietary High Efficiency Control Algorithm The A5939/A5949 three phase motor controller incorporates sinusoidal drive to minimize audible noise and vibration for high power fans.  Adjustable Current Source Based Gate Drive  Speed Input • PWM – A5949 A sinusoidal voltage profile is applied to the windings of the motor at startup to quietly startup and gradually ramp up the motor to desired speed.