Hi,
With WEBENCH power designer tools, I design TPS43060 with these parameters Input: DC 12 V - 28 V, Output: 32 V at 3 A.
The tools gives this results: Rsns1=Rsns2=7mR (Rsense=3.5mR) and L1=4.7µH (-> Ilpeak=9.98A).
Page 24, formula (20) of the TPS43060 datasheet (SLVSBP4D – DECEMBER 2012 – REVISED SEPTEMBER 2014), the relation between Rsense and IL1pk is : Rsense = 68mV / (1.2 x Ilpeak).
With this formula and Ilpeak=9.98A (gives by WEBENCH), the Rsense is 5.7mR.
My question is : Where does this difference come from ? the calcul gives Rsense=5.7mR and simulation gives 3.5mR
Thanks for your help.
Best regards
Eric