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Class D Switching Power Amplifiers and Power D/A conversion

dead-time, feedback, thd
dead-time, feedback, thd
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Old 19th September 2006, 08:51 PM   #1
aborigini is offline aborigini  Singapore
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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.

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Old 19th September 2006, 10:53 PM   #2
VEC7OR is offline VEC7OR  Lithuania
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dead-time, feedback, thd
Have you searched the forum ? There is more than enough info on that.
Profanity took a very interesting form in Russia where there exists a language of sorts, most of its words based on four basic profane roots - nouns p...is, wh.0.e, c..t and verb f..k. It is possible to sensibly communicate using just these four basic roots.
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