公开(公告)号：US10310530B1

公开(公告)日：2019-06-04

申请号：US15963330

申请日：2018-04-26

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Feng Lu ,  Qingjie Ma

IPC: G05F1/575 ,  G05F3/26 ,  G05F1/46 ,  G05F1/59

CPC classification number: G05F1/575 ,  G05F1/468 ,  G05F1/59

Abstract: A circuit comprises: a pass transistor; a first transistor comprising a gate coupled to the gate of the pass transistor, a source coupled to the source of the pass transistor, and a drain; a second transistor comprising a gate coupled to the gate of the pass transistor, a source coupled to the source of the pass transistor, and a drain; a first current mirror coupled to the drain of the first transistor; a second current mirror coupled to the drain of the second transistor, and coupled to the first current mirror; a feedback voltage circuit coupled to the drain of the pass transistor; an error amplifier comprising a first input port coupled to the feedback voltage circuit, and an output port coupled to the gate of the pass transistor; and a capacitor coupled to the second current mirror and to the first input port of the error amplifier.