Control of constant_off_time buckboost?

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treez

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Hello,
Is the small signal , power stage transfer function for a CCM, constant_off_time buckboost ( eg as in attached schematic) the same as for a CCM ,fixed frequency buckboost converter?

eg the equation 2A-22 attached (page 232 of Basso book," switch mode power supplies"), which is for a fixed frequency CCM buckboost, can the same equation be used for a constant_off_time buckboost?
 

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  • bukboost.pdf
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  • Basso 232.pdf
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