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Idle current in class D audio amp

Yunsik Chung
Intellectual 1150 points

Hi,

I have a question about idle current in class D audio amp.

I can understand that idle current is necessary for classA, AB amp for bias point.

But, why is there idle current in class D audio amp?

Could you let me know what causes idle current in class D amp?

Thanks,

Best regards,

Yun