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Integrated Sensorless FOC BLDC Driver for Compact Fan Applications

AMT49400

The AMT49400 simplifies fan motor control with its integrated sensorless FOC algorithm, integrated power MOSFETs, and minimal external component requirements, making it ideal for compact designs.

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Top Features

Packaging

  • Coding-free sensorless field-oriented control (FOC)
  • Standby mode current less than 10 μA
  • Quiet and quick startup
  • Only two external components for minimal application circuit
  • PWM speed input, FG speed output
  • Lock detection
  • Soft-on soft-off (SOSO)
  • Optional closed-loop speed control
  • Configurable current limit
  • Windmill and reverse windmill operation
  • Lock detection
  • Short-circuit protection (OCP)

Typical Applications:

  • All-in-One PC and Laptop Cooling Fan
  • Exhaust & Graphical Cooling Fans
  • Home Appliance Fans & Pumps
  • Server Cooling Fan
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Part Number Specifications and Availability

Documentation and Resources

Documentation

Third Party Design Tools

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Documents Found: 32
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Brochure
Innovative Motor Control
Whitepaper
Innovative FOC Motor Control: Improve Time to Market by Eliminating Software Development

Mikroe Demoboards


PWR Meter 3 Demo Board

Brushless 21 Click is a compact add-on board suitable for controlling brushless DC (BLDC) motors with any MCU. This board features the AMT49400, an advanced 3-phase, sensorless BLDC motor driver with integrated power MOSFETs from Allegro Microsystems


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