Check for ground bounce Issues
Posted: Sun Apr 28, 2013 2:48 pm
Hi all, as most of embedded engineers well known this,
http://en.wikipedia.org/wiki/Ground_bounce
pic
Where it lifts up/down the ground of an IC to several volts.Probably reset the chip due to our MCLR guy.
Where motor resets only a one side.
If a situation like that occurs [suppose, these kind of things are very common in EE].How could I start
to check this against ground bouncing.
Suppose these are the things that I know.
1. length of wires.
2. PCB layout.
3. Inductance per a centimeter.
4. Timing diagrams of the microcontroller and access to micro-controller firmware source code level.
[More than that access to timing analysis reports from a simulation software].
These are my question(S).
1. Where I could start analysis?
* collecting data, what data ?
* what kind of testpoints and windows that I should made into design.
2. What kind of EMS [electro magnetic simuation ] software are available for that?
3. If I model this using some kind of software what kind of parameters I should concern.
4. Is it fesable just to normalize the electro-mechanical parameters into a electric model and just
analyze this only using a circuit simulator?
Thanks in advance.
http://en.wikipedia.org/wiki/Ground_bounce
pic
Where it lifts up/down the ground of an IC to several volts.Probably reset the chip due to our MCLR guy.
Where motor resets only a one side.
If a situation like that occurs [suppose, these kind of things are very common in EE].How could I start
to check this against ground bouncing.
Suppose these are the things that I know.
1. length of wires.
2. PCB layout.
3. Inductance per a centimeter.
4. Timing diagrams of the microcontroller and access to micro-controller firmware source code level.
[More than that access to timing analysis reports from a simulation software].
These are my question(S).
1. Where I could start analysis?
* collecting data, what data ?
* what kind of testpoints and windows that I should made into design.
2. What kind of EMS [electro magnetic simuation ] software are available for that?
3. If I model this using some kind of software what kind of parameters I should concern.
4. Is it fesable just to normalize the electro-mechanical parameters into a electric model and just
analyze this only using a circuit simulator?
Thanks in advance.