fanrong
Banned
Hi ,every one :
In LDO design , to increase the second pole ( the pole at the output node
of error amplifier) , the EA 's last stage is a buffer stage . So the pole
w= Ro*Cpass will be small ) .
But sometimes , the pole is still too low .
My question is , is there any other ways to decrease the output impendance
of the EA ? Does negative feedback will do ?
In LDO design , to increase the second pole ( the pole at the output node
of error amplifier) , the EA 's last stage is a buffer stage . So the pole
w= Ro*Cpass will be small ) .
But sometimes , the pole is still too low .
My question is , is there any other ways to decrease the output impendance
of the EA ? Does negative feedback will do ?