Hello,
in the datasheet of TPS92515 (released in August 2016) there is equation 6 calculating the correct output-current if outputvoltage is lower than 10V..:
Iled =[....]-[(Vled*(-RoffCoff(ln(1-Voft/Vled)+tdoff)/2L). I quess this need to be Iled =[....]-[(Vled*(-RoffCoff(ln(1-Voft/Vled)+(Vled*tdoff))/2L)
The last part of the equation (tdoff/2L) isn*t a current yet.
Can you please check?
Regards Matthias