Hi TI team,
I am using TPS54320 with the following condition.
Vin = 8.5V、Vout = 7.2V、L = 4.7uH、RT= 68k(Fsw = 714kHz)
We tested with Iout = 3A and below is the waveform
Green: Iout Yellow: Vout Cyan:Vsw
It turns ON(40ms) and OFF(32ms) repeaatedly. Is this behaviour due to overcurrent protection or thermal protection?
If its OCP, how can I relate it with the parameters in the datasheet below?
In our application, rush current flows as below and it seems the switching stoped temporarily. At this condition does the OCP starts to kick in?
But TPS54320 continue to operate and there is 500mV drop. ( Yellow : Vout Green: Iout Cyan:Vsw)
Thank you.