what is the latchup problem? and how to slove it?

[vamsi_addagada]

what is the latchup problem? and how to slove it?

 

[deh_fuhrer]

To be very simple and brief, it is the problem when parasitic transistors formed in the CMOS caught some noise, and a positive feedback circuit become activated which eventually leads to short-circuit between VDD and VSS....
To prevent it use guard rings, substrate contact, retrograde well structure, SOI process...

 

[suru]

FOUND IN CMOS. PLZ TIE WELL TO VDD POTENTIAL.

 

[jason99pan]

You can refer to "Principles of CMOS VLSI Design - A Systems Perspective" 2nd Ed., Section 3.5....

That will describe the problem more detail...

 

[samirkag]

Stray bjts in the cmos structure form a thyristor. Refer Streetman.

what is the latchup problem? and how to slove it?