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Integrated Sensorless FOC BLDC Driver for Compact Fan Applications

AMT49400

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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
10-lead SOIC with exposed thermal pad (LK package)

LK Package Documentation

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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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