Embedded Systems Conference
Breaking News
Comments
Newest First | Oldest First | Threaded View
Page 1 / 2   >   >>
amchaddad
User Rank
Rookie
re: Understand and reduce DC/DC switching-converter ground noise
amchaddad   11/23/2015 11:45:37 AM
NO RATINGS
As an on-PCB DC/DC converter, I can see that as the designer, I am responsable for the best practice in the supporting circuitry and layout design to minimize the coruption of Ground. I would like to understand better (1) how to determine if one converter or another may be designed better or worse for this particular trait and (2), when using a switching Mains supply to provide my DC power, what steps can I take to minimize the ground noise between the outoput of the power-supply and my device's circuits?

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

BicycleBill
User Rank
Author
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
Author
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
Author
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.

Page 1 / 2   >   >>


Radio
LATEST ARCHIVED BROADCAST
As data rates begin to move beyond 25 Gbps channels, new problems arise. Getting to 50 Gbps channels might not be possible with the traditional NRZ (2-level) signaling. PAM4 lets data rates double with only a small increase in channel bandwidth by sending two bits per symbol. But, it brings new measurement and analysis problems. Signal integrity sage Ransom Stephens will explain how PAM4 differs from NRZ and what to expect in design, measurement, and signal analysis.

Datasheets.com Parts Search

185 million searchable parts
(please enter a part number or hit search to begin)
Most Recent Comments
bobdvb
 
Wilco1
 
DeeCee430
 
DeeCee430
 
moronda
 
rick merritt
 
Bruzzer
 
traneus
 
akkaraju
Like Us on Facebook
Special Video Section
The LTC®6363 is a low power, low noise, fully differential ...
Vincent Ching, applications engineer at Avago Technologies, ...
The LT®6375 is a unity-gain difference amplifier which ...
The LTC®4015 is a complete synchronous buck controller/ ...
10:35
The LTC®2983 measures a wide variety of temperature sensors ...
The LTC®3886 is a dual PolyPhase DC/DC synchronous ...
The LTC®2348-18 is an 18-bit, low noise 8-channel ...
The LT®3042 is a high performance low dropout linear ...
Chwan-Jye Foo (C.J Foo), product marketing manager for ...
The LT®3752/LT3752-1 are current mode PWM controllers ...
LED lighting is an important feature in today’s and future ...
Active balancing of series connected battery stacks exists ...
After a four-year absence, Infineon returns to Mobile World ...
A laptop’s 65-watt adapter can be made 6 times smaller and ...
An industry network should have device and data security at ...
The LTC2975 is a four-channel PMBus Power System Manager ...
In this video, a new high speed CMOS output comparator ...
The LT8640 is a 42V, 5A synchronous step-down regulator ...
The LTC2000 high-speed DAC has low noise and excellent ...
How do you protect the load and ensure output continues to ...