Datasheet for TPS54331 step down DC/DC Converter: http://www.ti.com/litv/pdf/slvs839d
On page 14 about 3/4 down the page Equation 16
Vpo = 1/(2*pi*Roo*Cz)
Roo is never defined. Is this a typo where Roo should be Ro which is Vo/Io?
Am I missing something? Can anyone clarify what exactly the low freq pole is and what the mid freq zero/pole pair is in terms of Vpo, FZ1, and Fp1.
Finally: How is a DC gain component represented on a root locus plot.