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Microchip Technology MTD6508电机驱动器

Microchip Technology MTD6508电机驱动器是一款三相、全波、无传感器驱动器，用于无刷直流 (BLDC) 电机。 MTD6508具有180°正弦驱动器、高扭矩输出和静音驱动器。MTD6508因具有适应特征、参数和2V至5.5V的宽电源范围，因此能够涵盖要求最少外部组件的广泛电机特性。 速度控制可通过电源调制 (PSM)或脉冲宽度调制来实现。 紧凑的封装以及极少所需物料使得MTD6508成为风扇应用的理想选择。 频率发生器 (FG) 输出允许在闭环应用中实现精密速度控制。 MTD6508器件包含锁定保护模式，即电机处于锁定条件时输出电流关闭，此外，还具有自动恢复功能，以及解锁锁定条件时重启风扇。 还包含电机过流限制和热关断保护，以增强操作的安全性。 还包含电机过流限制和热关断保护，以增强操作的安全性。 MTD6508电机驱动器采用紧凑、热增强型UDFN和UQFN封装。

The MTD6508 device includes Lockup Protection mode to turn off the output current when the motor is in a lock condition, with an automatic recovery feature to restart the fan when the lock condition is removed. Motor overcurrent limitation and thermal shutdown protection are included for safety enhanced operations. Motor overcurrent limitation and thermal shutdown protection are included for safety-enhanced operations.

The Microchip Technology MTD6508 Motor Driver is offered in compact, thermally-enhanced, UDFN-10 and UQFN-16 packages.

特性

  • 180° sinusoidal drive, for high efficiency and low acoustic noise
  • 2.0V to 5.5V operating voltage range
  • Position sensorless BLDC drivers
  • No hall-effect sensor required
  • Integrated power transistors
  • Programming resistor (RPROG) setting to fit motor constant (Km) range from 3.25mV/Hz to 52mV/Hz
  • Direction Control
  • Forward direction: connect DIR pin to GND or leave floating
  • Reverse direction: connect DIR pin to VBIAS
  • Output PWM slew rate control programmable with an external resistor for start-up (adjustable version)
  • Phase target selection for regulation (adjustable Version)
  • Start-up strength selection (adjustable Version)
  • Speed control through Power Supply Modulation (PSM) and/or Pulse-Width Modulation (PWM)
  • Built-in Frequency Generator (FG Output Signal)
  • Built-in lockup protection and automatic recovery circuit
  • Built-in overcurrent limitation
  • Built-in thermal shutdown protection
  • Low minimal start-up speed for low-speed operation
  • No external tuning required
  •  -40°C to +125°C operating temperature range
  • Package options
    • 3.0mm x 3.0mm x 0.5mm UDFN-10
    • 4.0mm x 4.0mm x 0.5mm UDFN-16

应用

  • Notebook CPU Cooling Fans
  • 5V 3-Phase BLDC Motors

Development Tools

Functional Block Diagram

Microchip Technology MTD6508电机驱动器
发布日期: 2017-07-12 | 更新日期: 2022-03-21