This thread has been locked.
If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.
TAS5624a芯片手册一段描述:The CLIP signal indicates that the output is approaching clipping (when output PWM starts skipping pulses due
to loop filter saturation). The signal can be used to initiate an audio volume decrease or to adjust the power supply rail.
问:
1. CLIP 保护是基于电流(电感电流)判断的?
见图1,13v供电,绿色为PWM input, 黄色Out(LC之前),波峰处的占空比已经被skip了,此时CLIP 低。
意思是电感饱和了?是不是增大电感,同样条件下CLIP 保护可能会解除?
另外,不同供电电压下,负载下,PWM最大输入占空比如何确定?
2.LC 滤波参数选择:若截止频率,Q值都接近的情况下, L推荐大的还是小的,是会影响功率还是效率?当然不会低于推荐值。
图1