quaternion
Full Member level 4
- Joined
- Nov 12, 2006
- Messages
- 212
- Helped
- 17
- Reputation
- 34
- Reaction score
- 7
- Trophy points
- 1,298
- Location
- Cairo , Egypt
- Activity points
- 2,828
Could you tell me about the specs of such design ,specially the transient and drop out ones, please.ashish_chauhan said:... but in a recent design wich i did i had a ground current of few hundred nA in resistive feedbak and less than a uA of ground current in EA and its bias.
ashish_chauhan said:Secondly I could not understand Why are you talking of a diode connected device loading the EA output... I dont have any such device in my design...
In normal mode my EA consumes around 10~12uA, leakage in resistive feedback remains the same.
Sorry as i cannot reveal the specs till the silicon is out.
ashish_chauhan said:In normal mode my EA consumes around 10~12uA, leakage in resistive feedback remains the same.
Sorry as i cannot reveal the specs till the silicon is out.
I think that isn't true , or you mean P1(at no load )is at very small frequency such that UGB(no load) < P1(full load) ?rajanarender_suram said:no load UGB of the LDO system is less then P1(due to output external cap).
(if the LDO is stable)rajanarender_suram said:what are the effects of having less UGB for no load ?? and how can i improve it????
Yesquaternion said:........ you mean P1(at no load )is at very small frequency such that UGB(no load) < P1(full load) ?
??? i did not got the pointquaternion said:(if the LDO is stable)rajanarender_suram said:what are the effects of having less UGB for no load ?? and how can i improve it????
I think if this is due to your output cap then it seems to be large enough that it catches transients & PSRR well.
I want to note that I had made other circuits (~ 10 cts) in order to get a performance near to the needed one.ashish_chauhan said:i saw the schematic of ur ldo(capless) how much current are you burning in quescient state...?
Yes I am tring to add a left half plane zero that elevates the phase shift up again.ashish_chauhan said:It appears like u are trying to add a zero in the transfer function of loop gain...
I am not understanding ,I didn't mention RHP zeros ,do you mean the parasitic ones, or you mean you couldn't see the the effect of the LHP zeros in the loop gain?ashish_chauhan said:and also I cud not see the 2 "RHP zeros".
We use cookies and similar technologies for the following purposes:
Do you accept cookies and these technologies?
We use cookies and similar technologies for the following purposes:
Do you accept cookies and these technologies?