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TMS320F280049C: TMS320F280049C的恒定谷值触发问题

Part Number: TMS320F280049C


变换器做恒定谷值控制,比较器的DAC参考值设置会定值,但是实验中,比较器触发时的值与DAC参考值不一样,而且变换器在比较器触发之后,当输入功率持续上升的时候,实验样机就会进入振荡,请问是什么原因?