I am using LM5165 in COT mode (see schematic snippet image).
My problem is that the variation in off-time required to regulate the output rail is in a frequency band of interest causing interference with ADCs elsewhere in the system (~25kHz). The switching frequency is varying from ~175kHz to ~200kHz, with RT = 43kOhm (different from schematic snippet).
With RT = 43kOhm, that calculates Fsw of ~530kHz, so I am assuming that my nominal switching frequency is much lower because my load current is not close to maximum, correct?
Is there anything I can do to get the ~25kHz switching noise up above 50kHz or so? I was thinking perhaps a larger inductor will reduce ripple current, causing my nominal load current to be closer to CCM behavior.
Unfortunately it is difficult to measure the exact load current because I don't have a way to break the +4V rail right at the converter.
