Hi Jurjen,
Thanks for pointing out the error. Watch out as there is also a typo with the superscripts for the s's in the last three parts of equation 7 that make them subscripts.
When I put the equations into a Math Program I get fairly close graphs to the ones in the appnote. (Though the Q of the resonant peak seems exagerated since no DCR of the inductors or ESR of the SEPIC cap was taken into account)
