Datasheet Details
Part number:
A4949, A4945
Manufacturer:
Allegro
File Size:
932.32 KB
Description:
Three phase sensorless sinusoidal fan driver.
Note:
This datasheet PDF includes multiple part numbers: A4949, A4945.
Please refer to the document for exact specifications by model.
A4949, 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
A4949 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
📁 Related Datasheet
📌 All Tags
