T
I could imagine someone including the switches in the 'power stage'.
But regardless, the output filter should dominate its transfer function.
Thanks but sorry i should have said that here i am only concerning the small signal transfer fucntions of an SMPS.The low frequency gain of a CCM buck is approx Vout/Duty. For DCM, it's a little bit more complicated.
I believe that the power stage transfer function can be greater than 0dB for the case of voltage mode (not current mode) , and when at the resonant frequency of the LC of the power stage....(eg buck inductor/output capacitor resonance)
The control to output transfer function in current mode can never be greater than 0dB unless there is gain in the Modulator...
("control to output" = Power stage and modulator)
"Power stage" isn't really standard terminology, but I would expect a bode plot to include the effect of the PWM modulator on the transfer function. Meaning that it should account for whether it's operating in DCM or CCM, and right half plane zeros, etc.
We use cookies and similar technologies for the following purposes:
Do you accept cookies and these technologies?
We use cookies and similar technologies for the following purposes:
Do you accept cookies and these technologies?