hi guys,
i using TPS54231 to a create USB charger board. But somehow it can't get me 5V output. i wonder is it because i didnt do proper compensation?
i copy exactly schematic from BQ500412 eval board schematic(3.3V).
My circuit needed 5V output. so i adjusted the Vsense resistor as below:
This is the waveform of the output.
I'm not sure what happen. It seem like have some noise when i connected a constant 5 ohm load to the USB connector. I doubt is the compensation but i don't know how to calculate the value of resistor and capacitor. Can you help me?