Hi,
Would you please explain the purpose of Vstart and Vstop function on TPS54622?
On the EVM user guide, it stated that Vin start is 6.528V, and Vin stop is 6.19V.
From my understanding, these two voltage levels are UVLO depending on Vin increasing or decreasing.
However, when I tried to lower my Vin from 12V down to 8V, the IC doesn't work anymore, it seems like 8V is the UVLO level.
I have read through the datasheet and did simulation on webench, but have found no answers.
So my question is, what is the function of Vstart and Vstop and how is it related to Vin?
Thank you!