Design Con 2015
Breaking News
Comments
Newest First | Oldest First | Threaded View
Page 1 / 2   >   >>
silker
User Rank
Rookie
re: Understand and reduce DC/DC switching-converter ground noise
silker   4/27/2013 9:28:30 PM
NO RATINGS
Can we say that RC inductor current sense method has the drawback of ground line pollution? We intentionally put a capacitor (along a resitor resistor) between inductor legs.

SLN MURTHY
User Rank
Rookie
re: Understand and reduce DC/DC switching-converter ground noise
SLN MURTHY   5/15/2012 5:43:39 AM
NO RATINGS
It is an excellent article. Jerry Deng's point is valid and impact of varying current in a constant voltage environment would add more punch to this basic understanding.

Swamp
User Rank
Rookie
re: Understand and reduce DC/DC switching-converter ground noise
Swamp   12/1/2011 1:53:00 PM
NO RATINGS
As a slight improvement, it might have been informative to include the specific physical location of the input capacitor described in your article (between the Vin pin of the converter IC/switch transistor and the anode of the switching diode). Great article, Jeff -thanks!

Jerry.Deng
User Rank
Rookie
re: Understand and reduce DC/DC switching-converter ground noise
Jerry.Deng   11/29/2011 7:31:54 PM
NO RATINGS
good article. However it assumes constant current on load, most IC actually works at constant voltage with varing current dynamically, any idea?

PierreBTOL
User Rank
Rookie
re: Understand and reduce DC/DC switching-converter ground noise
PierreBTOL   11/26/2011 8:14:59 AM
NO RATINGS
@ studleylee: Very useful, thank you for that link !

huanben
User Rank
Rookie
re: Understand and reduce DC/DC switching-converter ground noise
huanben   11/25/2011 6:12:40 AM
NO RATINGS
GOOOOOOOOOOOOOOOOOD

BicycleBill
User Rank
Rookie
re: Understand and reduce DC/DC switching-converter ground noise
BicycleBill   11/24/2011 12:48:06 PM
NO RATINGS
There is some system bug which is preventing the "enlarge" of Figures 5 and 6 from appearing properly. Here are the direct links for those figures: http://www.eetimes.com/ContentEETimes/Documents/Schweber/C0893/C0893-Figure5.pdf AND http://www.eetimes.com/ContentEETimes/Documents/Schweber/C0893/C0893-Figure6.pdf

Sail Mike
User Rank
Rookie
re: Understand and reduce DC/DC switching-converter ground noise
Sail Mike   11/24/2011 8:58:03 AM
NO RATINGS
Missing links for larger images & cant print

Fabio007
User Rank
Manager
re: Understand and reduce DC/DC switching-converter ground noise
Fabio007   11/24/2011 8:27:13 AM
NO RATINGS
Great article, I would like to get a PDF copy of it, but the print link does not seem to work. To add to comment of agk re: winding inductor with low parasitic C, another trick is to have the turns at the ends of the winding (near the connection terminals) spaced further apart compared to turns in the middle of the winding. This is an old trick used by ham-radio builders, and can result is a smaller inductor than would result from spacing all turns the same distance apart, but of course the parasitic C is a bit higher.

studleylee
User Rank
Manager
re: Understand and reduce DC/DC switching-converter ground noise
studleylee   11/23/2011 5:36:00 PM
NO RATINGS
@PierreBTOL Loved this article! This other one was also useful in tips for common mode noise: http://www.interpoint.com/product_documents/DC_DC_Converters_Output_Noise.pdf Measurement and Filtering of Output Noise of DC/DC Converters

Page 1 / 2   >   >>


Flash Poll
Top Comments of the Week
Like Us on Facebook
EE Times on Twitter
EE Times Twitter Feed

Datasheets.com Parts Search

185 million searchable parts
(please enter a part number or hit search to begin)
EE Life
Frankenstein's Fix, Teardowns, Sideshows, Design Contests, Reader Content & More
Max Maxfield

Book Review: Deadly Odds by Allen Wyler
Max Maxfield
11 comments
Generally speaking, when it comes to settling down with a good book, I tend to gravitate towards science fiction and science fantasy. Having said this, I do spend a lot of time reading ...

Martin Rowe

No 2014 Punkin Chunkin, What Will You Do?
Martin Rowe
1 Comment
American Thanksgiving is next week, and while some people watch (American) football all day, the real competition on TV has become Punkin Chunkin. But there will be no Punkin Chunkin on TV ...

Rich Quinnell

Making the Grade in Industrial Design
Rich Quinnell
14 comments
As every developer knows, there are the paper specifications for a product design, and then there are the real requirements. The paper specs are dry, bland, and rigidly numeric, making ...

Martin Rowe

Book Review: Controlling Radiated Emissions by Design
Martin Rowe
1 Comment
Controlling Radiated Emissions by Design, Third Edition, by Michel Mardiguian. Contributions by Donald L. Sweeney and Roger Swanberg. List price: $89.99 (e-book), $119 (hardcover).