A4945 Datasheet - Allegro

A4945 Three Phase Sensorless Sinusoidal Fan Driver

The A4945 and A4949 three phase motor drivers incorporate sinusoidal drive to minimize audible noise and vibration for medium power fans. A Speed input is provided to control motor speed. This allows system cost savings by eliminating an external variable power supply. Alternatively, power supply mo.

A4945 Features

* 180° sinusoidal drive for low audible noise

* High efficiency control algorithm

* Sensorless operation

* Analog Speed input (A4945)

* PWM Speed input (A4949)

* Wide supply voltage range

* FG speed output

* Lock detection

* Ove

A4945 Datasheet (932.32 KB)

A4945 Datasheet Preview — Preview of A4945 PDF

Datasheet Details

Part number:

A4945

Manufacturer:

Allegro

File Size:

932.32 KB

Description:

Three phase sensorless sinusoidal fan driver.

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A4945 Three Phase Sensorless Sinusoidal Fan Driver Allegro

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