wern1115
Newbie level 1
Hi, I am new to the edaboard and also new in Analog IC designing. I would like to have some guidance in designing a LDO Series Voltage Regulators with the given specifications.
• Power supply voltage = 3.3V +/-300mV
• Output voltage = 1.8V +/-50mV
• Reference voltage = 1.2V
• PSR > 30dB
• Temperature range : -40 to 125C
The EDA Tool which i would be using is the Mentor Graphic Eldo with the process of TSMC 0.35um.
I would like to ask
1) The relationship of PSR & PSRR
2) is the open loop gain a factor of oscillation?
3) is folded cascode opAmp or 2 stage opAmp is much suitable in achieving the above specification?
4) if using a 2nd stage opAmp, is it easy to get on the optimum value range of ESR? as folded cascode opAmp may not need a ESR.
Thank you for the Guidance in advance.
• Power supply voltage = 3.3V +/-300mV
• Output voltage = 1.8V +/-50mV
• Reference voltage = 1.2V
• PSR > 30dB
• Temperature range : -40 to 125C
The EDA Tool which i would be using is the Mentor Graphic Eldo with the process of TSMC 0.35um.
I would like to ask
1) The relationship of PSR & PSRR
2) is the open loop gain a factor of oscillation?
3) is folded cascode opAmp or 2 stage opAmp is much suitable in achieving the above specification?
4) if using a 2nd stage opAmp, is it easy to get on the optimum value range of ESR? as folded cascode opAmp may not need a ESR.
Thank you for the Guidance in advance.
