data/text/DLP2/892352

TPS23755: start current of TPS23755

Part Number: TPS23755 Hi team, we want to check how much the startup current? I find that TPS23755 use advance startup, and integrate the current source.

Hello Betty, The EVM has a startup waveform that shows the input current on page 6: That will include the current used in advanced startup. If this post answers your question, please indicate so by marking this thread as resolved. Thank you. Regards, Michael P. Applications Engineer customer organization

hi Michael, I sitll not clear about the startup current. In the page 6, the Iin is the startup current,right? And, why it have a step and then spike? The startup current is less than 50mA?

Betty, The current shown in page 6 is the input current for the board. This will include the current in the startup circuit. Or, are you needing the specific current associated with the internal current source? If so, why is that number needed versus the overall input current required? The large current spike is inrush, which is limited by the IC. If this post answers your question, please indicate so by marking this thread as resolved. Thank you. Regards, Michael P. Applications Engineer customer organization

Hello, This thread has been inactive for many weeks now. I am going to close it, but feel free to reopen it or start a new thread. Thank you. Regards, Michael Pahl