Patent ID: 11953925
Assignee: NINGBO AURA SEMICONDUCTOR CO., LTD.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC G  H | IPC G  H

Claim 0:
1. A linear voltage regulator comprising:
a pass transistor with a first current terminal coupled to receive an input voltage, wherein a second current terminal of said pass transistor is coupled to an output node of said linear voltage regulator and provides a regulated output voltage;
an error amplifier coupled to receive a reference voltage on a first input terminal and a feedback voltage derived from said regulated output voltage on a second input terminal, said error amplifier designed to generate an error signal representing a difference between said reference voltage and said feedback voltage;
a first driver stage coupled between said error amplifier and said pass transistor, a first transistor of said first driver stage having a control terminal coupled to receive said error signal, wherein a control terminal of said pass transistor is coupled to receive an output of said first driver stage;
a compensation circuit for frequency compensation of said linear voltage regulator;
a compensation adjustment circuit to sense a magnitude of current through said first transistor of said first driver stage, and to adjust a parameter of said compensation circuit based on said magnitude of current; and
a load capacitor coupled between said output node of said linear voltage regulator and a first constant reference potential,
wherein said compensation adjustment circuit comprises a second transistor, wherein a control terminal of said second transistor is coupled to a control terminal of said first transistor such that said second transistor and said first transistor are in a current-mirror configuration.