H桥预驱IC:TB9057FG

此图显示了TB9057FG H桥电机预驱动IC的内部。

H桥预驱IC设计用于电动助力转向系统(EPS)等大电流应用

  • H桥预驱电路(需要外部FET)
  • 内置电荷泵(VB = +7V或更高)
  • 低压驱动的低边预驱电路(使用电荷泵来提高电源电压)
  • 电机旋转方向检测的内置电路
  • 高速预驱电路
  • 内置高速高精度电机电流检测电路
  • 双重电源和接地端子,以确保功能安全
  • 各种检测电路(欠压检测、FET短路检测、热关断)
  • 电源电压:40V峰值(甩负荷)
  • 工作电压:5至21V
  • PWM频率:20kHz
  • 工作温度:Ta = -40至+125 ℃
  • 封装:LQFP48

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