EEVblog Electronics Community Forum
A Free & Open Forum For Electronics Enthusiasts & Professionals
Welcome,
Guest
. Please
login
or
register
.
Did you miss your
activation email
?
1 Hour
1 Day
1 Week
1 Month
Forever
Login with username, password and session length
This topic
This board
Entire forum
Google
Bing
Home
Help
Search
About us
Links
Login
Register
EEVblog Electronics Community Forum
»
Electronics
»
Beginners
»
PCB Layout for Shunt Resistor
« previous
next »
Print
Search
Pages: [
1
]
Go Down
Author
Topic: PCB Layout for Shunt Resistor (Read 2123 times)
0 Members and 1 Guest are viewing this topic.
john21443
Contributor
Posts: 20
Country:
PCB Layout for Shunt Resistor
«
on:
October 11, 2018, 11:44:21 pm »
Hello,
I am layout out PCB for device that includes power sensing. I am using this resistor for R1:
https://www.mouser.com/datasheet/2/418/NG_DS_1773449-3_F-1140363.pdf
. Specifically, the one in the 2512 package.
This is not a 4 wire package. Please take a look at the attached pcb screen shot and provide any feedback you have on how I laid out the traces. Sizing of the main feeds were from kicad pcb calculator with expected max 6A current.
Thanks,
John
Logged
german77
Regular Contributor
Posts: 72
Country:
Re: PCB Layout for Shunt Resistor
«
Reply #1 on:
October 12, 2018, 01:38:05 am »
Looks fine to me. But the traces are very close to the other terminal of the resistor R2 and R3 for my commodity. Turning them 90° should leave better clearance for the traces
Logged
The following users thanked this post:
john21443
john21443
Contributor
Posts: 20
Country:
Re: PCB Layout for Shunt Resistor
«
Reply #2 on:
October 12, 2018, 11:07:57 am »
Thanks for the feedback.
Logged
tszaboo
Super Contributor
Posts: 7804
Country:
Current job: ATEX product design
Re: PCB Layout for Shunt Resistor
«
Reply #3 on:
October 12, 2018, 11:48:22 am »
There you go, an appnote on it.
It all depends on how much accuracy you need.
http://www.analog.com/en/analog-dialogue/articles/optimize-high-current-sensing-accuracy.html
Logged
The following users thanked this post:
john21443
john21443
Contributor
Posts: 20
Country:
Re: PCB Layout for Shunt Resistor
«
Reply #4 on:
October 12, 2018, 11:55:21 am »
Thanks! I think I ran across that a while ago and completely forgot about it.
Logged
Print
Search
Pages: [
1
]
Go Up
« previous
next »
Share me
Smf
EEVblog Electronics Community Forum
»
Electronics
»
Beginners
»
PCB Layout for Shunt Resistor
There was an error while thanking
Thanking...
EEVblog Main Site
EEVblog on Youtube
EEVblog on Twitter
EEVblog on Facebook
EEVblog on Odysee