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TPS5420: none

Part Number: TPS5420

Tool/software:

Equation 26 for ripple, what are the units of R and C?  Is C in uf (100) or 100e-6?

If R is in ohms and C in uf (e-6), (tmax/tmin+tmin/ton) is >1 which makes the answer negative and ripple very small???