Datasheet4U Logo Datasheet4U.com

A5931 Datasheet Three-Phase Sensorless Fan Driver

Manufacturer: Allegro MicroSystems

📥 Download Datasheet

General 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.

Overview

A5931 Three-Phase Sensorless Fan Driver IC.

Key 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.

More Datasheets from Allegro MicroSystems

Part Number Description
A5931-3 Three-Phase Sensorless Fan Driver
A5932 Three-Phase Sinusoidal Sensorless Fan Controller
A5939 Three Phase Sinusoidal Fan Controller
A5929 Automotive Full-Bridge MOSFET Driver
A5940 Three Phase Sensorless Sinusoidal Fan Driver
A5941 Three-Phase Sensorless Fan Driver
A5943 Three Phase Sinusoidal Fan Driver
A5944 Three-Phase Sensorless Fan Driver
A5947-B Three-Phase Sensorless Fan Driver
A5947G Three-Phase Sensorless Fan Driver