dc converter

[marios]

VOLTAGE RIPPLE

[Simon]

hm I'm no expert but that looks more like actual switching spikes not output ripple

[neoone]

yes I would say so to. It looks like there's almost no ripple and low pass filter should get rid of that spikes. They are of quite high frequency so it shouldn't be a problem. Do already have any filter on the output ?

[marios]

no i haven't put any filter in the output yet, but because i am doing this for a small project, i will make just a comment of that it can be use a low pass filter as a further development,
so do you have nay suggestions for further development that may improve the converter?

[neoone]

try adding some inductor for example 1uH in series and capacitor 100nF to ground after that and optionally 100uF as well. If you have more inductors with the same value as used in DC-DC you can use that for now.

[marios]

I built an dc converter and first i used a 47?? inductor but then i change it and used a higher value 170??
is it possible to have less input power when i am using a higher value of inductor? but the output power of the converter at the same loading condition to be the same(1.5 W) with both inductors.


thanks