Hi,
I have a design with the LMR33620CRNX where input range is 12-18V in, with 5V out, and pretty much a stable 60mA load.
The efficiency is around 70%. I really need to conserve power here, so 90% would be a good goal.
ISSUES: Pretty much locked into this part because of supply chain issues... there is so little to choose from out there right now. But I guess if there is a better suggestion that you is available in a similar thermal package then I am all ears.
I also am well into a safety cert so that also complicates changing the part.
Given that I know I will not need higher current, and I do have some room to tweak, is there anything I can do?
Larger inductor? I experimented with this some and it seems to help a bit. I think it is already pulse skipping and this maybe helps with that a bit, but I am not sure.
I do not need to worry about transient loads. Just a stable 60mA at 5V. Input changes should not be fast.
Other specs...30V max input, -20 to 70C operation.
Thanks
Glen
