Patent ID: 11886214
Assignee: STMICROELECTRONICS S.R.L.
Field: Control (Instruments)
Classification: CPC G | IPC G

Claim 9:
10. A low-dropout voltage regulation device, comprising:
a power stage having an output terminal configured to be coupled to a load circuit, the load circuit being operable in a plurality of operating modes, the load circuit being configured to receive a different respective output current when in each operating mode of the plurality of operating modes;
an error amplifier having a first input coupled to a reference voltage, a second input, and an output coupled to an input terminal of the power stage; and
a compensation circuit comprising:
a first compensation stage comprising an RC filter coupled to the input terminal of the power stage, and generating an initial compensation voltage; and
a second compensation stage comprising:
a first transistor coupled between a supply voltage and a high-side capacitor, the first transistor having a control terminal coupled to a complementary control signal;
the high-side capacitor directly electrically connected between the first transistor and ground;
a third transistor directly electrically connected between the initial compensation voltage and the high-side capacitor, the third transistor having a control terminal coupled to a control signal, the complementary control signal being a complement of the control signal, wherein the control signal is representative of a current operating mode of the load circuit;
a second transistor directly electrically connected between the initial compensation voltage and a low-side capacitor, the second transistor having a control terminal coupled to the control signal; and
the low-side capacitor directly electrically connected between the second transistor and ground.