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DRV8305 如何设置 IDRVIEN/TDRIVE

Other Parts Discussed in Thread: DRV8305

DRV8305  具有可编程的独立高速 (HS)/低速 (LS) 转换率/斜率控制 ( IDRVIEN     TDRIVE)

请问根据不同的MOS管,如何设置这里的参数,以什么为标准?

  • 在实际应用中很难有完美的模型用于计算驱动电流和Vds slew rate。一般是通过检测Vgs和Vds,调试IDRIVE的档位设置门极驱动电流,以减少在线性区域和米勒区域的时间,以减少开关损耗。但是过快的slew rate会使得EMI性能变差。通过不断优化,达到一个最佳的驱动性能。