Hi!
I'm new to Class D design however I have read some.
From my Reading I've concluded that I want to design and build my own UCD-Class D amplifier and more importantly understand how to design them on my own!
I've looked into many threads, but I've not find any thread or webpage that actually makes an AC analyis of the "complete" circuitry.
The closets I've came is the following:
http://www.genomerics.talktalk.net/selfosc/selfoscc.html
I’ve taken an simulation here on the forum and modified a bit:
http://www.diyaudio.com/forums/class-d/236704-ucd-tanaka-bridge-ltspice-simulation.html
In the time domain my circuit seem to work properly and oscillating, however I do believe the circuit of mine is an unstable UCD when I do AC analysis.
Maybe I insert the AC source on the wrong place or something, I’m not sure I’ve tried some ways I belive is right to insert the AC source, but all gives instable transfer functions that do not full fill the self-oscillating criterion for stability.
I hope someone could help me figure this out or explain how to insert the AC source.
PS: I have read the first and the update criterion by the Bruno Putzes, but maybe not fully understood them.
Best regard
I'm new to Class D design however I have read some.
From my Reading I've concluded that I want to design and build my own UCD-Class D amplifier and more importantly understand how to design them on my own!
I've looked into many threads, but I've not find any thread or webpage that actually makes an AC analyis of the "complete" circuitry.
The closets I've came is the following:
http://www.genomerics.talktalk.net/selfosc/selfoscc.html
I’ve taken an simulation here on the forum and modified a bit:
http://www.diyaudio.com/forums/class-d/236704-ucd-tanaka-bridge-ltspice-simulation.html
In the time domain my circuit seem to work properly and oscillating, however I do believe the circuit of mine is an unstable UCD when I do AC analysis.
Maybe I insert the AC source on the wrong place or something, I’m not sure I’ve tried some ways I belive is right to insert the AC source, but all gives instable transfer functions that do not full fill the self-oscillating criterion for stability.
I hope someone could help me figure this out or explain how to insert the AC source.
PS: I have read the first and the update criterion by the Bruno Putzes, but maybe not fully understood them.
Best regard