A5931 Three-Phase Sensorless Fan Driver

Allegro

Description

A5931 Three-Phase Sensorless Fan Driver IC .
TheA5931 three-phase motor driver IC incorporates sensorless sinusoidal drive to minimize vibration for high speed server fans.

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Datasheet Specifications

Part number: A5931
Manufacturer: Allegro
File Size: 1.51 MB
Datasheet: A5931-Allegro.pdf
Description: Three-Phase Sensorless Fan Driver

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) powe

Applications

* A flexible closed-loop speed control system is integrated into the IC. EEPROM is used to tailor the common functions of the fan speed curve to a specific application. This eliminates the requirement for a microprocessor-based system and minimizes programming requirements. The A5931 is available in

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A5931 Three-Phase Sensorless Fan Driver Allegro

Allegro A5931-like datasheet