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UC2875 这款芯片的PWM波的占空比是如何产生,如何控制的?

Other Parts Discussed in Thread: UCC28950

我看手册了解到通过反馈EA+与EA-的误差比较,E/Aout可以输出移相角,同时误差放大器输出连接到PWM锁存器,输出4路。

请问PWM的占空比是如何调整的?PWM占空比与移相角之间有什么关系吗?

谢谢!