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闭环PSFB程序什么情况下会使输出DPWM波禁止,无输出波形



如题,周五实验用的PSFB程序未经任何修改,周一再次写入程序,竟无DPWM波输出,硬件没问题,因为某些开环程序写入后有DPWM波输出,而周五PSFB程序写入后明明有DPWM波输出,请问是怎么回事?