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transient response ldo
I think it is not strange that big overshot occured that without a big output capacitance if no special method used
I meet the sample questions also
Can any one give us a solution?
Deal All:
Such as the Figure follow, we use a Vdd for Error Amp and other control block
And a Vin for N-type Power element
I know the PSRR of the Vout to Vdd,
But How about the PSRR of the Vout to Vin?
Thanks a lot and expect for any suggestion!
Dear transB:
Thanks again for your help,I confirmed for your Q1 & Q2
And I can not find a RHP from the p/z mapping I posted
for Q3, It does have effect to the zero, it shirt the zero about only one decade by varying the resr from 10m~1 ohm, so I think it not the domain factor to form the...
compensation of ldo
Hi transbrother:
Thanks for your help!
It is right that the zero have relationship with the Cc1, because once I disconnect this loop the phasemargin is really down.
But because the Cc1 is 10pF only, I can not explain why the zero is at low frequency.
M3 is diode...
when are rhp zero formed
This structure is built follow the Rincon-Mora Enhanced Miller Compensation method
In his paper, the structure can pull two poles as far as possible. This loop can be compensated stably, But There is a zero=-2.165e+02, which I can’t find where it comes form. It...
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