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https://e2e.ti.com/support/power-management-group/power-management/f/power-management-forum/948758/ucd3138-which-register-selects-output-filter
请参阅 UCD31xx 数字电源控制器技术参考手册4.1.6滤波器输出级中的第153页。 滤波器可以输出滤波器占空比或滤波器周期。 哪个寄存器决定我们选择的输出？
滤波器周期仅用于谐振模式(例如 LLC)。 如果您不使用此模式、则无需担心、UCD 将自动选择滤波器占空比。
