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Buck Converter - Additional filtering ?

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Wp100

Well-Known Member
Hi,

Am using the Mini-360 buck converters to provide the 5v for an arduino based project with ds18b20 sensors and driving 5v and 12v fans .
Using analogue only for a simple 4 switch resistor network

Do these little devices need any additional input or output capacitors / filtering ?

Thanks
 

MrAl

Well-Known Member
Most Helpful Member
Hi,

Am using the Mini-360 buck converters to provide the 5v for an arduino based project with ds18b20 sensors and driving 5v and 12v fans .
Using analogue only for a simple 4 switch resistor network

Do these little devices need any additional input or output capacitors / filtering ?

Thanks

Hi,

Only if your application needs it.

A typical post filter for any switcher is a small inductor maybe 2uH and a capacitor. The inductor should have low ESR.
An important point is that the feedback location point does not change even after adding the post filter.
 

crutschow

Well-Known Member
Most Helpful Member
Good grounding and ground scheme is also important in minimizing noise.
It should be build with a copper ground plane if possible.
 
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