Hello,
I have a problem with LM25119.
Input voltage:12V
Output voltage:0.9V\1.8V\3.3V
Load current test range:0-30A
I changed the voltage by changing the FB resistance and then carried out the load test.
I found that when the voltage is 3.3V and 1.8V, the output voltage ripple will increase to 150mV when the load current is 6-10A.
But when the output voltage is 0.9V, the output voltage ripple will not increase.
I tried adjusting Rcomp and Ccomp, no improvement.
I tested the waveform of HO2.
Does anyone know why this is?