A4945

Three Phase Sensorless Sinusoidal Fan Driver

Allegro

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 General Description

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 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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A4945 Features

A4945 General Description

Datasheet Details

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A4945 Distributor