What are the contradicting requirements of a capacitor?

Tighter line and load regulation, low quiescent current operation, capacitor-free and wide-range output capac itor specifications are some of the contradicting requirements in an which drive newer topologies and newer frequency compensation techniques. The objective of this paper is to provide LDO,

What is the purpose of a compensation capacitor?

Objective of compensation is to achieve stable operation when negative feedback is applied around the op amp. Miller - Use of a capacitor feeding back around a high-gain, inverting stage. Miller capacitor only Miller capacitor with an unity-gain buffer to block the forward path through the compensation capacitor. Can eliminate the RHP zero.

What is m3 & MQ in a TBE compensating capacitor?

The addition of transistors M3 and Mq in the input stage permits the connection of tbe compensating capacitor to the source of a common-gate device (cascode transistor), which decouples the gate of the driver tran-sistor from the compensation capacitor.

Which capacitor represents parasitic capacitance?

The three remaining capacitors represent parasitic: Cl in-cludes the gate-source capacitance of Mg and junction capacitance; Cz is the gate to drain capacitance of M8, and is mainly the overlap capacitance :since M8 is normally saturated; and C~ represents the source–gate capacitance of Md and its junction capacitance.

Can a current bufer be placed in series with a Miller capacitor?

Similarly a voltage or current bufer can be placed in series with the Miller capacitor in order to move the RHP zero to the LHP , as described below. Current bufers can be loosely classified as non-inverting or inverting.

What causes a zero in a cascode op amp?

of the cascode op amp of Fig. 3. amp. that the mechanism causing a zero is the same for either circuit, namely the amount of capacitance COUPhg the gate of ikfg to the output. CC to .2, which is very high since CC is the compensation capacitor whereas C2 is only the drain to gate capacitance of a saturated transistor ( M8).