Patent · US Active

Dual mode low-dropout linear regulator

US9405309B2 · kind B2 · utility

3Cited by

1References

20Claims

0Family size

Assignee

Infineon Technologies AG · DE

Inventors

Florin Biziitu · Bucharest, RO
Ansgar Pottbaecker · Grafing, DE
Paul David Patriche · Bucharest, RO

Key dates

Filing date	Nov 29, 2014
Grant date	Aug 2, 2016
Priority date	—
Expiry date	Nov 29, 2034

Classification

Technology area (CPC G)Physics
CPC primaryG05F1/575
WIPO fieldControl
WIPO sectorInstruments

Abstract

In one example, a method includes operating an LDO regulator system in one of a voltage regulation mode or a power balancing mode. The method further includes comparing one or more respective reference voltages to one or more respective feedback voltages to determine a change in amount of current that needs to be delivered by the LDO regulator system, wherein a first reference voltage is across a reference resistor and a first feedback voltage is across a shunt resistor, and in response to the change in the amount of current that needs to be delivered by the LDO regulator system, adjusting an amount of current flowing through a transistor to maintain a load at a constant output voltage level. Circuits and systems that implement the method are also described.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.