So of course we have the standard small signal analysis for solving non linear circuits.

In general i always think of the AC component that rides on top of the DC bias.

I cam across a book that is trying to define small signal duty cycle in the context of switching converters.
I dont understand what small signal duty cycle is.

duty cycle in this context is a square wave so what is small signal duty cycle?

The only thing i can think of is the AC component from the average signal.
But isnt that just the duty cycle?

 

Duty cycle is a pure number between 0 and 1.

Presumably, the book you read gave a definition of “small signal duty cycle.” I have never heard the term before.

 

In usual electronic analysis, large-signal includes the non-linear elements in the analysis, and small-signal assumes all the elements are linear, so not sure what small-signal duty-cycle is.

Apparently the author of that book has an unconventional definition for that term.
Doesn't he define that term somewhere in the book?

 

In usual electronic analysis, large-signal includes the non-linear elements in the analysis, and small-signal assumes all the elements are linear, so not sure what small-signal duty-cycle is.

Apparently the author of that book has an unconventional definition for that term.
Doesn't he define that term somewhere in the book?

That is always what i understood also.
@ 1.30 in the video he says small cycle duty cycle

 

Hi Mike,
The closest definition of 'small signal duty cycle' I can find is in this link.
E
https://electronics.stackexchange.c...modelling-of-buck-converter-varying-frequency

 

I would read 'small signal duty cycle' as a constant that comes out of the steady state that you use for the small signal analysis.

 

A "small Signal Duty Cycle" would be a square wave type PWM signal operating within the linear operating conditions of the devices. Just because a device can function with a square wave does not mean that it has to be running in a switching mode of saturation and cutoff.
Of course it must also be operating within it's frequency response range.