Supply microcontroller from switching buck-converter unsing battery power

VV V. OP #6269177
Rate this post
• ▲ useful
▼ not useful 
Hi,

I want to use a buck-converter for converting my battery voltage to a 
voltage usable by a microcontroller. My question is if I need anything 
between the buck-converter and the micrcontroller to reduce noise (e.g. 
ferrit bead or LC-filter).
I am using TPS82740B as Converter.

Thanks a lot
Reply Quote Edit Move Thread sperren Anmeldepflicht aktivieren Anpinnen Delete topic Thread mit anderem zusammenführen Report post
Frederic S. Guest #6272856
Rate this post
• ▲ useful
▼ not useful 
Consider the datasheets and compare the ripple from the Switching 
regulator to the maximum allowable ripple for the microcontroller.

An LDO is not necesarry in most cases, but will a secure solution to 
avoid proplems (if equipped with capacitiors according to the 
datasheet).

Make shure to  have enough capacitors near to the switching regulator 
and (espacially 100nF ceramic) near to the microcontroller.

Frederic
Reply Quote Edit Delete Report post
Watch this topic

Reply

Note: the original post is older than 6 months. Please don't ask any new questions in this thread, but start a new one.

Formatting
  • [c]C-Code[/c]
  • [code]code in other languages, ASCII drawings[/code]
  • [math]formula (LaTeX syntax)[/math]
  • [[Title]] – link to an article
  • Link to another post: right-click its post ID (#8078628), copy the address, paste it into the text

More about formatting

Post long source code as an attachment, not in the text.

Your name and e-mail address

Already registered? Log in

Not shown to anyone. We send you a link; your post appears once you confirm it there.

By submitting you create a free account and accept the terms of use.