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Old 19th September 2006, 07:51 PM   #1
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Question dead-time, feedback, thd

Hi all,

I am designing a class d amplifier from scatch. I learnt that to minimise thd, the feedback loop is necessary. However, after I added the feedback loop, the 3rd and 5th harmonics are really high. The rest of harmonics are low.

I added the deadtime at the output stage. I am wondering if the dead-time has cause more distortion in the feedback loop as it creates distortion in the baseband signal.

Any idea? Really stress over this.

thx
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Old 19th September 2006, 09:53 PM   #2
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Have you searched the forum ? There is more than enough info on that.
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