A4942 - Three-Phase Sensorless Fan Driver

Allegro

Datasheet Details

Part number	A4942
Manufacturer	Allegro
File Size	0.96 MB
Description	Three-Phase Sensorless Fan Driver
Datasheet	A4942-Allegro.pdf

TheA4942 three phase motor driver incorporates BEMF sensing to eliminate the requirement for Hall sensors in fan applications.

Sensorless (no Hall sensors required).
Closed loop speed control.
Minimal external components.
PWM speed input.
FG speed output.
Lock detection.
Soft start.
Overcurrent protection.
Soft switching for reduced audible noise Package: 20-contact QFN (suffix ES) Not to scale.

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Published: Dec 30, 2024 |