Hi, I use the TI webench to design a converter with followings parameters:
Vin: 5 to 55 V
Vout: 4.55 V
Iout: 1 A
Considering desing and components used converter could supply 1 A. But testing the board with the converter, as maximum converter can supply 0.8 A. This current is in all the voltage range. The inputs can supply enough current to obtain 1 A as maximum. That is with a voltage from 6V to 55 V.
But with 5V is different, with a power supply of 5V@1A I have an output of 0.5 A as maximum and with a 5V@3A I have an output of 0.7 A as maximum.
First I think that the inductor is limiting to that current, but I chose it because its parameters and also in the webench don't show a problem if I use the inductor chosen. Part number is 7447713220.
Could you help to identify if the problem is the inductor or where the problem could be?