SNVAA44 july 2023 LM5155 , LM5155-Q1 , LM51551 , LM51551-Q1 , LM5156 , LM5156-Q1 , LM51561 , LM51561-Q1 , LM5157 , LM5157-Q1 , LM51571-Q1 , LM5158 , LM5158-Q1 , LM51581
The SEPIC converter output voltage will start at 0 V – therefore different equations are given for boost and SEPIC.
In the SEPIC topology, the soft-start time (tSS) is calculated as Equation 6.