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Allegro MicroSystems

A5932 : Three Phase Sinusoidal Sensorless Fan Controller

The A5931 is a three phase sensorless BLDC fan driver IC that incorporates sinusoidal drive to minimize audible noise and vibration.
The A5931-3 is the latest in the family with a new feature that allows user to adjust deceleration speed from Force Open Loop to Close Loop.
A flexible closed-loop speed control system is integrated into the IC. This eliminates the requirement for a microprocessor-based system and minimizes programming requirements.
The A5931 devices are available in both commercial and automotive grade.

Product Number: A5932

Class: Fan, Motor Controllers, Drivers, BLDC Drivers, Fan Drivers

Tag: BLDC Drivers, Three Phase Sinusoidal Sensorless Fan Controller, Motor, Motion, Ignition Controllers & Drivers

180° sinusoidal drive - Low audible noise and vibration
Motor position using Allegro's sensorless algorithm - Eliminates external Hall sensors
Closed-loop speed control
Speed curve configuration via EEPROM
Lock detection
Soft start
Standby mode
Shorted load protection

Part Number Type Output Current Technology Mounting Style Operating Frequency Moisture Sensitive Applications Output Voltage Operating Temperature Voltage - Supply Package Type
A5932 3 Phase 3A NMOS SMD/SMT 24.4 kHz Yes Fan Controller 6.8 V, 7.5 V -40 °C ~ 105 °C(TA) 5.5V ~ 50V 24-lead TSSOP with exposed thermal pad (LP package),
24-contact QFN wettable flank with exposed thermal pad 4×4mm × 0.75mm(ES package, -J option)
24-contact QFN with exposed thermal pad 4×4mm × 0.75mm(ES package)

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  • See below for downloadable documentation, software, and other resources.

    Datasheet Download on Jun, 2022

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