Texas Instruments DRV8860八路低侧驱动器

Texas Instruments DRV8860八通道低侧驱动器是一款具有过流保护和开路/短路负载检测功能的8通道低侧驱动器。它内置有用来钳制由电感负载生成的关闭瞬态的二极管。此器件还可用于驱动单极步进电机、直流电机、继电器、螺线管、或者其它负载。PWP封装器件可提供最高330mA(8通道打开)的电流,而PW封装器件则可提供最高 200mA(8通道打开)的连续输出电流。 单一通道能够驱动高达560mA的连续输出电流。设有一个串行接口来控制DRV8860输出驱动器、配置内部设置寄存器以及读取每条通道的故障状态。DRV8860器件可采用菊花链连在一起以共同使用一个单一串行接口。 也可通过串行接口来配置加电时间和保持PWM占空比。这些功能可实现比始终开启解决方案更低的运行温度。

特性

  • 8-channel protected low-side driver
    • Eight NMOS FETs with overcurrent protection
    • Integrated inductive catch diodes
    • Serial interface
    • Open/short load detection (DRV8860 only)
    • Configurable 100% output timing
    • Configurable PWM duty cycle
  • Continuous current driving capability
    • 560mA (single channel on) PW and PWP
    • 200mA (8 Channels on) PW
    • 330mA (8 Channels on) PWP
    • Support parallel configuration
  • 8V to 38V supply voltage range
  • Input digital noise filter for noise immunity
  • Internal data read back capability for reliable control
  • Protection and diagnostic features
    • Overcurrent Protection (OCP)
    • Open Load Detection (OL)
    • Overtemperature Shutdown (OTS)
    • Undervoltage Lockout (UVLO)
    • Individual channel status report
    • Fault condition alarm

应用

  • Relays, unipolar stepper motors
  • Solenoids, electromagnetic drivers
  • General low-side switch applications
  • LED driver with dimmer functionality (DRV8860A)
发布日期: 2016-07-11 | 更新日期: 2022-03-11