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3-Phase Motor Drivers

Microchip offers a family of three-phase brushless motor drivers and gate drivers. The family of three-phase brushless sensorless sinusoidal motor drivers can be interfaced with any microcontrollers by using a simple PWM, or can also be used stand-alone by the application. The family of three-phase brushless gate drivers is ideal to be designed with microcontrollers or digital signal controllers.

Key Features of Motor Driver Family

  • Sensorless three-phase brushless motor drivers (no hall-effect sensor required)
  • 180° sinusoidal drive, for high efficiency and low acoustic noise
  • Speed control through power supply modulation (PSM) and/or pulse-width modulation (PWM)
  • Direction control pin (MTD6502B and MTD6505)
  • Resistor programmable BEMF coefficient (MTD6505)
  • Motor speed output (FG)
  • Lockup protection and automatic recovery
  • Over-current Limit, short circuit, and over-temperature protection

Key Features of Motor Gate Driver Family

  • Three half-bridge drivers configured to drive external NMOS MOSFETs
  • Shoot-through protection
  • Overcurrent and short circuit protection
  • Adjustable output buck regulator (MCP8024, MCP8025, MCP8026)
  • Operational amplifiers for motor phase current monitoring and position detection (MCP8024, MCP8025, MCP8026)
  • Overcurrent Comparator  (MCP8024, MCP8025, MCP8026)
  • Level Translators
  • UVLO; OVLO; thermal warning and shutdown
  • Load dump protection, Jumpstart capability
  • Extended Temperature Range: -40 to +150°C
  • High junction temperature 200°C (ATA6844)