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A5931 - Three-Phase Sensorless Fan Driver

Product Overview

Allegro

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A5931 Three-Phase Sensorless Fan Driver by Allegro - Datasheet Preview — Datasheet preview – A5931

Datasheet Details

Part number	A5931
Manufacturer	Allegro
File Size	1.51 MB
Description	Three-Phase Sensorless Fan Driver
Datasheet	A5931 Datasheet
Additional preview pages of the A5931 datasheet.

A5931 Product details

Description

TheA5931 three-phase motor driver IC incorporates sensorless sinusoidal drive to minimize vibration for high speed server fans.

Sensorless control eliminates the requirement for Hall sensors for server fan applications.

A flexible closed-loop speed control system is integrated into the IC.

Features

AEC-Q100 qualified (K version).
Closed-loop speed control.
Speed curve configuration via EEPROM.
I2C serial port.
Sinusoidal modulation for reduced audible noise and low vibration.
Sensorless (no Hall sensors required).
Low RDS(ON) power MOSFETs.
3 A capability.
Minimal external components.
PWM speed input.
FG speed output.
RD rotor lock output.
Lock detection.
Soft start.

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Published: Dec 30, 2024 |