I am trying to work out what function the components in inverter colors serve, this is a schematic I have derived from a net-list to make it easier to explain my answer
E1
is an Error amplifier inside a LDO Regulator (VCVS)
Net 3
is connected to source of a P-Channel MOSFET with upper and lower clips. (I think this is unusual as I have found that the output of error amplifier is with respect to the input)
Net 9
is the FB
(Feedback) node,
Net 12
is the reference voltage node,
2.8V output voltage is set using feedback resistive divider. Has dropout voltage of 220mV for 150mA. Nominal input is 3-5.5v.
Is there a name or key word for this type of compensation?
How does this help for stability, PSRR (both) e.g. If I wanted to perform open and closed loop analysis for placement of poles and zeros ? What would this change?