[SOLVED] Confused!- Negative gain in feedback loop and still working!!!

Status
Not open for further replies.
D

dhaval4987

Full Member level 3
Joined
Oct 17, 2009
Messages
161
Helped
12
Reputation
24
Reaction score
12
Trophy points
1,298
Location
AZ
Activity points
2,325
Dear all,

I am working on a design of a voltage regulator which involves using a diffpair in a closed loop.

However- at low load current the phase margin sucks and the gain is in negative, but to my surprise, it still works in transient analysis. How can this be possible? whats going on?

Any suggestions?
 

you need to maintain minimum current on your output feedback to maintain stability. negative gain does not necessary mean your circuit shouldn't work.
pls post a screenshot if possible.
 

Status
Not open for further replies.

Similar threads

Menu
Log in
Register
Cookies are required to use this site. You must accept them to continue using the site. Learn more…