MTD6505 Fan Motor Driver

By Microchip Technology 122

MTD6505 Fan Motor Driver

Microchip's MTD6505 device is a 3-phase full-wave sensorless driver for brushless DC (BLDC) motors. It features 180° sinusoidal drive, high torque output and silent drive. With the adaptive features, parameters and wide range of power-supplies (2 V to 5.5 V), the MTD6505 is intended to cover a broad range of motor characteristics, while requiring minimum external components.

Speed control can be achieved through either power supply modulation (PSM) or pulse-width modulation (PWM). The compact packaging and the minimal bill-of-materials make the MTD6505 device extremely cost efficient in fan applications.

MTD6505 Application Diagram

  • 180° sinusoidal drive, for high efficiency and low acoustic noise
  • Position sensorless BLDC drivers (no hall-effect sensor required)
  • Integrated power transistors
  • Supports 2 V to 5.5 V power supplies
  • Notebook CPU cooling fans
  • 5 V 3-phase BLDC motors

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