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电机快速启动时,拉低电源电压,导致DRV8305欠压保护(PVDD_UVLO2)

Other Parts Discussed in Thread: DRV8305

您好!

我在使用TMS32F28027F和DRV8305驱动BLDC电机,当以高加速度启动电机时,除了第一次启动正常,之后启动时8305会报PVDD_UVLO2的错误,无法启动电机。我已经将DIS_VPVDD_UVLO2置1了,但是好像并没有用处,电机依然无法启动,调试窗口能看到FAULT和PVDD_UVLO2位是置1的。

我希望电源电压拉低不会影响电机正常启动,请问一下这有什么好的解决方法?

我的电源电压是7.2V,电机空载电流是3A。