Excuse me everyone , im kind a getting confused and my head is turning around also dillema about my single rail class d amplifier waveform output, is this good waveform or the worst amplification and/or just the weird audio amplifier i've made so i really hoping the suggestion and a bit help,
here is the waveform picture,also be able to see the detail waveform in pdf
Some info about this amplifier : fullbridge , supply source at 64V single rail , 4Ohm Load , input signal injected at 500hz , sawtooth signal something around 450Khz
Also If anyone who interesting to saw the schematic (might be none😄) i will drop it in this post
here is the waveform picture,also be able to see the detail waveform in pdf
Some info about this amplifier : fullbridge , supply source at 64V single rail , 4Ohm Load , input signal injected at 500hz , sawtooth signal something around 450Khz
Also If anyone who interesting to saw the schematic (might be none😄) i will drop it in this post
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Dear Exelonz,
The kind of modulation you're using seems more suitable for inverters but not audio amplifiers, due to the visible crossing over (Class B) distortion. You may get rid of the same by running the two legs of the full-bridge out of phase, with half signal amplitude.
All the best.
The kind of modulation you're using seems more suitable for inverters but not audio amplifiers, due to the visible crossing over (Class B) distortion. You may get rid of the same by running the two legs of the full-bridge out of phase, with half signal amplitude.
All the best.
Seems for inverters right 😄 thats what causing my dillema , im trying to use BD modulation(maybe) for this single supply amp but it was really hard for my brain to figure it out , but im still trying😄
Maybe i wil use half signal amplitude again if this modulation didnt possible for me , thanks for the suggestion
Such crossover distortion in a Class D amplifier is generally attributable to excessive dead time.
For BD modulaton, do what I said first, and then use another sawtooth (Ts/2 delayed) for the second leg. You don't have to split the halves at all.
Exactly were all know it , thats why i want to fix it however , if u have any opinion or something to help me out it'll be helpfull
Today i did what you said to me before , it did work pretty well and the waveform all fine but my pc deciding to stop my project because my pc cant running the simulation after i finished everything😑
So now that you did both BD and AD (for inverted sawtooth) which do you think has less crossover distortion and which one do you like?
For me , BD is better especially for single rail class d amplifier and/or dual rail but its still hard for me😄
And if u didnt mind , can you send me some reference about the feedback configuration for this BD modulation
last thing , i will drop the schematic if all finished and working well ( until it didnt blow up at least )😄