Leakage-current start-up reference circuit

Patent metadata

Field	Value
Publication number	US-9239586-B2
Application number	US-201414286831-A
Country	US
Kind code	B2
Filing date	May 23, 2014
Priority date	Dec 4, 2013
Publication date	Jan 19, 2016
Grant date	Jan 19, 2016

Abstract

A leakage-current start-up reference circuit is provided which includes a reference circuit unit, a trigger unit, a leakage-current generator and a disable control unit. The trigger unit includes a first transistor. The drain terminal of the trigger unit is connected to a start-up terminal of the reference circuit unit. The leakage-current generator includes a second transistor which is a gate-drain-tied transistor. The disable control unit includes a third transistor. The gate terminal of the disable control unit is connected to a control terminal of the reference circuit unit. The drain terminal of the leakage-current generator, the gate terminal of the trigger unit and the drain terminal of the disable control unit are joined at a node. The reference circuit unit is started up by the trigger unit to generate a reference current. A leakage-current start-up reference circuit having a current mirror is also provided.

First claim

What is claimed is:

1. A leakage-current start-up reference circuit comprising:
a reference circuit unit having a start-up terminal and a control terminal and generating a reference current;
a trigger unit comprising a first transistor with source, gate and drain terminals, the drain terminal of the trigger unit being connected to the start-up terminal of the reference circuit unit, wherein the trigger unit starts up the reference circuit unit through the start-up terminal;
a…

Assignees

• Ind Tech Res Inst

Inventors

• Huang Chao-Jen

Classifications

• G05F3/16 Primary

  Physics · mapped topic

• G05F3/262

  Physics · mapped topic